{"title":"Giddings \u0026 Lewis","description":"\u003cp\u003eIndustrial surplus Giddings \u0026amp; Lewis parts and equipment, in stock at MRO Exchange.\u003c\/p\u003e","products":[{"product_id":"on-hold-giddings-lewis-32ac-output-board-m-1017-6051-502-03567-00-0226-274","title":"Giddings \u0026 Lewis M-1017-6051 \/ 502-03567-00 32 AC Output Board","description":"\u003cp\u003eThis listing is for a Giddings \u0026amp; Lewis Motion Control Inc. (G \u0026amp; L Motion Control Inc.) 32AC Output Board, identified as Part Number M-1017-6051 and Reference Number 502-03567-00. The label indicates this unit is a “32AC OUTPUT BOARD” and is marked “Refurbished.” Additional label details include “Remanufactured Substitute For: 502-03567-00,” Serial Number *AB5197, and Date Code 057400. The assembly is packaged in protective foam and anti-static style packaging.\u003c\/p\u003e\n\n\u003cp\u003eIdentifiers for reference: M-1017-6051 (part number), 502-03567-00 (reference number \/ substitute-for number), 32AC Output Board (board function), Serial *AB5197 (serial), Date Code 057400. Electrical marking shown: 32AC.\u003c\/p\u003e\n\n\u003cp\u003eUse this item when you need a replacement or spare 32VAC output board associated with the 502-03567-00 reference number family. No additional specifications, testing results, or compatibility claims are provided beyond what is shown on the label.\u003c\/p\u003e\n\n\n\u003cp\u003eStock # 0226-274\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48817379803376,"sku":"m00274","price":374.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/FFB27749-B504-4152-8B1B-4D429A5951C8.jpg?v=1770760893"},{"product_id":"giddings-lewis-station-hand-held-operator-pendant-m10172187-0226-314","title":"Giddings \u0026 Lewis M.1017.2187 Hand Held Operator Pendant","description":"\u003cp\u003eThis listing is for a Giddings \u0026amp; Lewis Station Hand Held operator pendant, part number M.1017.2187, identified by the original factory tag attached to the cable. The unit is a handheld CNC machine operator control station designed for use with Giddings \u0026amp; Lewis CNC machine tool controls. The pendant face features a full array of operator controls including a Speed and Override rotary selector knob, a jog rate selector, axis selection switches labeled B2, A2, Y, W, and Z\/V, a Feed Tray toggle switch, a Jog mode selector, and a row of illuminated pushbutton controls labeled Spindle Stand, Spindle Start, Cycle Start, Axis Move, Feed Stop, Coolant On\/Off, and Feed Hold. Two large red dual-palm mushroom emergency stop buttons are prominently positioned at the lower face of the pendant. The housing is constructed with a black anodized aluminum body with yellow rubber end caps and strain relief boots at both cable entry points. A heavy-duty multi-pin circular connector is present at the cable end for machine interface connection. The cable is a large-diameter multi-conductor type of substantial length, coiled and tied. A small parts bag is attached to the cable with string. This pendant is a direct replacement or spare for Giddings \u0026amp; Lewis equipped machine tools requiring handheld operator station functionality. Buyers should verify connector pinout and control system compatibility prior to purchase.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-314\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48823139041520,"sku":"m00314","price":469.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/864ED0A9-D678-4F56-8AEF-AB79F6BD951F.png?v=1781796973"},{"product_id":"giddings-and-lewis-differential-encoder-interface-pcb-assembly-501-04758-00-0226-386","title":"Giddings \u0026 Lewis 501-04758-00 Differential Encoder Interface PCB Assembly","description":"\u003cp\u003eThis Giddings and Lewis Differential Encoder Interface PCB assembly carries part number 501-04758-00, revision R1, with assembly number 502-03733-00, serial number E27314, and date code 100001. The board description \"Diff Encoder Interface\" is silkscreened directly on the green PCB in yellow text, consistent with Giddings and Lewis CNC control system conventions. This type of interface board is used in Giddings and Lewis CNC machine tool control systems to process and route differential encoder feedback signals, supporting closed-loop servo axis control. Giddings and Lewis, later operating under the Danaher Motion and Kollmorgen umbrella, produced CNC control systems for large-format machining centers, boring mills, and turning centers, where encoder interface boards such as this served as critical system components. The 502-03733-00 assembly number also appears as the reference number on a later Danaher Motion labeled unit of the same design, indicating cross-platform use across control generations. This board has been discontinued by the manufacturer and is offered as surplus. No voltage rating or additional electrical specifications are visible on the board or label. Buyers should verify compatibility using the part number and assembly number prior to purchase.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-386\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48833910833392,"sku":"m00386","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/69784521-A86B-46E3-9D0F-202CA657B949.jpg?v=1771295685"},{"product_id":"giddings-lewis-llc-io-module-m1017-5991-0226-405","title":"Giddings \u0026 Lewis M.1017-5991 I\/O Board","description":"\u003cp\u003eGiddings \u0026amp; Lewis LLC Digital I\/O Board, part number M.1017-5991, remanufactured substitute for 502-03064-10. The assembly is identified as a DIGITAL I\/O BOARD and features PCB markings including “I\/O Communications Board,” 502-03428-10, 501-04314-01, and REV-2. The unit includes a multi-pin edge connector interface, discrete components, integrated circuits, and a mounted Elipower DC\/DC converter module visible on the board. Date code marked 200203 with serial number D02491. This board is designed for industrial control system applications requiring digital input and output signal handling within Giddings \u0026amp; Lewis platforms. All identification numbers and markings are derived directly from visible labels and PCB silkscreen text. Suitable for replacement or spare use where M.1017-5991 or substitute for 502-03064-10 is specified.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-405\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48833979252976,"sku":"m00405","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/EB38910E-50E9-4E7D-B266-5F3F2E726E9D.png?v=1783946659"},{"product_id":"giddings-lewis-llc-machine-control-board-m10083750-0226-414","title":"Giddings \u0026 Lewis M.1008.3750 Machine Control Board","description":"\u003cp\u003eGiddings \u0026amp; Lewis LLC M.1008.3750 machine control board labeled “Machine Control Fast.” The assembly is a large-format printed circuit board with edge card connectors and through-hole component layout. The board face marking identifies Giddings \u0026amp; Lewis and the control designation, with part number sticker M.1008.3750 and additional identifier 113403 visible on the assembly. This unit is designed for integration within Giddings \u0026amp; Lewis machine control systems and is configured as a CNC control module. The PCB features multiple populated and unpopulated component positions, plated through-holes, and card-edge contacts suitable for rack or chassis installation. No electrical rating is visible on the provided surfaces. Suitable for replacement, repair, or spare inventory where the exact part number M.1008.3750 is specified. Verify compatibility with your existing control system prior to installation\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-414\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48833996751088,"sku":"m00414","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/0F1194B0-9A84-4A8A-B4F5-019C79A2C927.png?v=1783955444"},{"product_id":"giddings-and-lewis-processor-module-501-03865-01-0226-417","title":"Giddings \u0026 Lewis 501-03865-01 Processor Module","description":"\u003cp\u003eUsed in Giddings and Lewis CNC machining centers and horizontal boring mills, the Processor Module with part number 501-03865-01 and assembly number 502-03061 is a full-size backplane-mounted circuit board assembly designed for the G\u0026amp;L 8000-series and related CNC control systems. The board is populated with TTL logic ICs including 74LS-series gates, 26LS30 and 26LS32 line drivers and receivers, MC68661 and MC6861 communication ICs, and a 8288 bus controller. PCB silkscreen identifies termination selection jumpers for TX, RTS, and DTR signals, indicating RS-232 serial communication interface functionality integral to the processor function. The board carries a gold-finger edge connector along both sides for direct backplane installation into the G\u0026amp;L control chassis. Two units are available, both carrying the same part number 501-03865-01 and the same assembly designation 502-03061. One unit carries serial reference 078001 and the other 305000 as visible on the board edge. Construction is through-hole on a multilayer fiberglass PCB with gold-plated edge connectors. The Giddings and Lewis 8000-series control platform was used extensively in large-format horizontal boring mills, vertical turning centers, and flexible machining systems produced during the 1980s and early 1990s.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-417\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48835251601648,"sku":"m00417","price":179.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/23A9E3F5-EEA3-4511-9D47-6B184B64ABC9.png?v=1783956451"},{"product_id":"giddings-lewis-electronics-processor-module-501-03865-01-502-03061-01-0226-418-1","title":"Giddings \u0026 Lewis 501-03865-01 \/ 502-03061-01 Processor Module","description":"\u003cp\u003eGiddings \u0026amp; Lewis Processor Module 501-03865-01 (secondary assembly 502-03061-01) represents a legacy CNC control component engineered for MPX series machine systems. This multi-layer green PCB incorporates industrial-grade TTL logic architecture with integrated clock generation (8284), bus control (8288), and dual serial communications capabilities via MC2661\/MC68661 controllers. The card-edge connector design facilitates standard rack-mount integration, while onboard line drivers (AM26LS30\/AM26LS32) and a precision 10 MHz crystal oscillator ensure reliable signal integrity in demanding manufacturing environments. Silkscreened test points and jumper-selectable termination options support field diagnostics and configuration flexibility. Ideal for CNC equipment restoration, maintenance, or parts inventory. Sold as-is surplus without functional verification.\u003c\/p\u003e\n\u003cp\u003eStock # 0226-418-1\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48835782803696,"sku":"m00418-1","price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/7ED9B2D8-53D1-41F7-85BC-BF3B22AB8308.png?v=1783956342"},{"product_id":"giddings-lewis-llc-i-o-module-m-1016-8452-0226-443","title":"Giddings \u0026 Lewis M.1016.8452 I\/O Module","description":"\u003cp\u003eThe Giddings \u0026amp; Lewis LLC Logic I\/O Module, part number M.1016.8452, is an industrial control printed circuit board used in CNC and motion control systems. The identification label shows part number M.1016.8452 with old part number 502-02734-50 and serial number D08547. The PCB silkscreen is marked “LOGIC I\/O” and includes assembly number 501-02989-00, confirming its function within a Giddings \u0026amp; Lewis electronics platform.\u003c\/p\u003e\n\u003cp\u003eThe board features multiple rows of integrated circuits, discrete resistors, capacitors, and transistor devices arranged in grouped logic sections. Gold-plated edge connectors on both sides indicate rack or card cage installation. The layout includes structured signal routing, fuse protection components, and clearly defined circuit groupings typical of discrete logic input\/output processing modules.\u003c\/p\u003e\n\u003cp\u003eThis assembly is intended for use as a Logic I\/O module in compatible Giddings \u0026amp; Lewis control systems. Identification details are based strictly on visible labels and PCB markings present on the unit.\u003c\/p\u003e\n\u003cp\u003eStock # 0226-443\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48837102600432,"sku":"m00443","price":314.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/01C99B4D-1281-494F-89A1-FC9D6A00B715.png?v=1783955324"},{"product_id":"giddings-lewis-electronics-servo-interface-board-501-03882-0226-452","title":"Giddings \u0026 Lewis 501-03882-00 Servo Interface Board","description":"\u003cp\u003eGiddings \u0026amp; Lewis Electronics Servo Interface board, part number 501-03882, assembly 503092-00, Revision RC (May 1984). Features dual National Semiconductor S8512A high-current operational amplifiers in TO-3 packages with direct heat-sinking for robust servo drive output. Includes LM301 op-amps, precision 0.05% resistors, adjustable GAIN and BAL potentiometers, and comprehensive test points (COS, SIN, IND, RES, DRV CMD, FDBK 1\/2, GND). Dual edge connectors (P1, P2) enable seamless integration into mid-1980s Giddings \u0026amp; Lewis CNC servo control architectures. Serial number 515003. Suitable as replacement or spare component for compatible systems. Removed unit, untested and uncertified. Verify compatibility with OEM specifications before installation.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eStock # 0226-452\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48838920339696,"sku":"m00452","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/CE90C563-ADEE-40EE-8EB2-94A5489B3F2A.png?v=1783954063"},{"product_id":"giddings-lewis-communication-board-501-03854-01-502-03063-01-0226-503","title":"Giddings \u0026 Lewis 501-03854-01 \/ 502-03063-01 Communication Board","description":"\u003cp\u003eUsed in Giddings \u0026amp; Lewis CNC machining center control systems, this Communication Board carries part number 501-03854-01 with secondary assembly number 502-03063-01. The board is branded G\u0026amp;L Electronics and features a dense double-sided PCB populated with optoisolator arrays (A 6N139 series), logic ICs including LS244, LS161, LS193, LS340, LS138, LS602, and 3341 series devices, as well as IDT 72401 FIFOs and MC68B661PB serial communications controllers. Connector designations silkscreened on the board include Digital I\/O Conn A Port, Serial Comm Port B, and Serial Conn C, indicating this board manages serial and digital I\/O communication routing within the CNC control rack. A crystal oscillator marked 4.912 MHz is present, providing the communications clock reference. Board revision is RA 12\/84, and serial number D04542 is visible. The second assembly number 502-03063-01 is also clearly labeled in the board header silkscreen. This is a legacy board intended for use in G\u0026amp;L CNC control systems requiring this specific communication interface. Compatible systems include Giddings \u0026amp; Lewis CNC controls of the era associated with this board generation.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-503\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856348426480,"sku":"m00503","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/0F51A9C2-88C2-47CA-9DEF-0EC071EFD11C.png?v=1783964658"},{"product_id":"giddings-and-lewis-electronics-io-pcb-board-assembly-501-03855-00-0226-505","title":"Giddings \u0026 Lewis 501-03855-00 I\/O PCB Board Assembly","description":"\u003cp\u003eThis listing is for a Giddings and Lewis Electronics Digital I\/O PCB Board assembly, part number 501-03855-00, with secondary reference number 502-03064-10 visible on an affixed label. The board is date coded 7\/83 RB. The assembly consists of two mirrored Digital I\/O sections, each with labeled INPUT and OUTPUT edge connectors, 16 screw terminal input positions per section numbered 1 through 28 visible in photos, individual fuse positions labeled FU1-0 through FU1-13 per section, and individual LED indicator positions labeled LED1-0 through LED1-13 per section. The Giddings and Lewis Electronics logo is visible on each board section.\u003c\/p\u003e\n\n\u003cp\u003eThis Digital I\/O board is consistent with components used in Giddings and Lewis CNC control systems commonly found in machining centers and other industrial machine tool applications from the 1980s. It represents a dual-section I\/O interface assembly providing fused discrete input and output channels with individual LED status indication per channel. The board shows surface wear and some LED indicators appear illuminated or marked, consistent with prior industrial installation and use.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-505\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856359239920,"sku":"m00505","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/513827A9-9C9F-4F19-9BF3-035B323F2846.png?v=1784035768"},{"product_id":"giddings-and-lewis-electronics-io-pcb-board-assembly-501-03855-00-0226-506","title":"Giddings \u0026 Lewis 501-03855-00 I\/O PCB Board Assembly","description":"\u003cp\u003eThis listing is for a Giddings and Lewis Electronics Digital I\/O PCB Board assembly, part number 501-03855-00, with secondary reference number 502-03064-10 visible on an affixed label. The board is date coded 7\/83 RB. The assembly consists of two mirrored Digital I\/O sections, each with labeled INPUT and OUTPUT edge connectors, screw terminal input positions numbered 1 through 26 visible in photos, individual fuse positions labeled FU1-0 through FU1-15 per section, and individual LED indicator positions labeled LED1-0 through LED1-15 per section. The Giddings and Lewis Electronics logo is visible on each board section.\u003c\/p\u003e\n\n\u003cp\u003eThis Digital I\/O board is consistent with components used in Giddings and Lewis CNC control systems commonly found in machining centers and other industrial machine tool applications from the 1980s. It represents a dual-section I\/O interface assembly providing fused discrete input and output channels with individual LED status indication per channel. The board shows surface wear consistent with prior industrial installation.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-506\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856372609264,"sku":"m00506","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/E82D0DEE-3E0E-4728-800A-7AC8D85EE92B.png?v=1784035843"},{"product_id":"giddings-and-lewis-digital-io-board-502-03064-00-0226-507","title":"Giddings \u0026 Lewis 502-03064-00 Digital I\/O Board","description":"\u003cp\u003eThis Giddings and Lewis Digital I\/O board, part number 502-03064-00 (assembly number 501-03855-00), is a large-format dual-section digital input and output circuit board designed for use in Giddings and Lewis CNC machine control systems, including the G\u0026amp;L 8000 and 8000B NumeriPath control platforms. The board features two independent I\/O sections, each populated with a full complement of screw-terminal terminal blocks, individual fused output circuits (FU1 series), red LED status indicators for each I\/O channel, jumper pin headers, and a card-edge connector for backplane interface. PCB silkscreen labeling identifies discrete numbered I\/O points across both sections, with INPUT and OUTPUT zones clearly marked. The board carries the Giddings and Lewis Electronics logo and includes a Board Section label area on each half. Construction is through-hole and mixed surface mount on a green FR4 substrate. This type of board provides discrete digital signal interfacing between machine field devices and the CNC control processor. The G\u0026amp;L 8000 control platform has reached end-of-life status per Fives, making spare boards such as this one increasingly difficult to source for facilities maintaining legacy Giddings and Lewis horizontal boring mills, vertical turning centers, and other G\u0026amp;L CNC equipment. No voltage rating, revision level, or serial number was confirmed from the provided photos.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-507\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856377458928,"sku":"m00507","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/49416141-85A4-4BB1-8B53-CF81AE9F50F7.png?v=1784035887"},{"product_id":"giddings-and-lewis-digital-io-board-502-03064-00-0226-509","title":"Giddings \u0026 Lewis 502-03064-00 Digital I\/O Board","description":"\u003cp\u003eThis Giddings and Lewis Digital I\/O board, part number 502-03064-00 (assembly number 501-03855-00, dated 7\/83 RB), is a large-format dual-section digital input and output circuit board designed for use in Giddings and Lewis CNC machine control systems, including the G\u0026amp;L 8000 and 8000B NumeriPath control platforms. The 7\/83 RB date code identifies this as an early production revision of the 502-03064 series. The board features two independent I\/O sections, each populated with a full complement of screw-terminal terminal blocks, individually fused output circuits (FU1 series), red LED status indicators for each I\/O channel, jumper pin headers, and card-edge connectors for backplane interface. PCB silkscreen labeling identifies discrete numbered I\/O points across both sections, with INPUT and OUTPUT zones clearly marked, along with Board Section label areas and the Giddings and Lewis Electronics logo. Construction is through-hole on a green FR4 substrate with ICs, resistor networks, and discrete components throughout. This type of board provides discrete digital signal interfacing between machine field devices and the CNC control processor. The G\u0026amp;L 8000 control platform has reached end-of-life status per Fives, making original-revision spare boards increasingly difficult to source for facilities maintaining legacy Giddings and Lewis horizontal boring mills, vertical turning centers, and other G\u0026amp;L CNC equipment. No voltage rating or serial number was confirmed from the provided photos.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-509\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856394334448,"sku":"m00509","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/3D7612BD-E3F5-4006-89F4-7AE146DC7D09.png?v=1784036300"},{"product_id":"giddings-and-lewis-digital-io-board-502-03064-00-0226-510","title":"Giddings \u0026 Lewis 502-03064-00 Digital I\/O Board","description":"\u003cp\u003eThis Giddings and Lewis Digital I\/O board, part number 502-03064-00 (assembly number 501-03855-00, dated 7\/83 RB), is a large-format dual-section digital input and output circuit board designed for use in Giddings and Lewis CNC machine control systems, including the G\u0026amp;L 8000 and 8000B NumeriPath control platforms. The 7\/83 RB date code identifies this as an early production revision of the 502-03064 series. The board features two independent I\/O sections, each populated with a full complement of screw-terminal terminal blocks, individually fused output circuits (FU1 series), red LED status indicators for each I\/O channel, jumper pin headers, and card-edge connectors for backplane interface. PCB silkscreen labeling identifies discrete numbered I\/O points across both sections, with INPUT and OUTPUT zones clearly marked, along with Board Section label areas and the Giddings and Lewis Electronics logo. Construction is through-hole on a green FR4 substrate with ICs, resistor networks, and discrete components throughout. This type of board provides discrete digital signal interfacing between machine field devices and the CNC control processor. The G\u0026amp;L 8000 control platform has reached end-of-life status per Fives, making original-revision spare boards increasingly difficult to source for facilities maintaining legacy Giddings and Lewis horizontal boring mills, vertical turning centers, and other G\u0026amp;L CNC equipment. No voltage rating or serial number was confirmed from the provided photos.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-510\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856395972848,"sku":"m00510","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/85398A12-3AD9-401C-AB3A-5653C8785FCF.png?v=1784036127"},{"product_id":"giddings-and-lewis-central-service-module-501-04304-00-0226-511","title":"Giddings \u0026 Lewis 501-04304-00 Central Service Module","description":"\u003cp\u003eThis Giddings and Lewis Central Service Module, part number 501-04304-00 (OEM catalog equivalent 502-03418-00, M.1017.6011 series, REV-2), is a large-format CNC control processor board designed for use in Giddings and Lewis machine control systems including the G\u0026amp;L 8000 and 8000B NumeriPath CNC platforms. The board is densely populated with through-hole ICs, memory arrays, resistor networks, and discrete components across a green FR4 substrate. Two Ericsson PKA 2231 P DC\/DC power modules are mounted onboard, providing regulated +5V, +12V, and -12V outputs. Three Panasonic lithium backup batteries are installed to maintain CMOS memory retention when main power is removed. Additional sub-boards visible include memory modules 502-52976-00 and 502-52977-00. An RTC (real-time clock) IC is present at position U63. Blue edge connectors and multiple internal bus connectors are visible. Serialized labels 169404 and 449604 are present on the board. The Central Service Module serves as a core computational and service resource within the G\u0026amp;L CNC control rack, managing system timing, memory, and inter-module communication. With the G\u0026amp;L 8000 control platform at end-of-life status per Fives, replacement central service modules are increasingly scarce and in demand by facilities maintaining legacy Giddings and Lewis horizontal boring mills and vertical turning centers.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-511\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856405901552,"sku":"m00511","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/CA1E9F65-1F47-462F-B8D9-DA2EEE0BF01B.png?v=1784036181"},{"product_id":"giddings-and-lewis-eia-interface-board-502-02804-50-0226-512","title":"Giddings \u0026 Lewis 502-02804-50 EIA Interface Board","description":"\u003cp\u003eThis Giddings and Lewis EIA Interface board, part number 502-02804-50 (assembly number 501-03168-00), is a large-format CNC control circuit board designed for use in Giddings and Lewis machine control systems including the G\u0026amp;L 8000 and 8000B NumeriPath CNC platforms. The board features dual gold-finger edge connectors on both the left and right edges for backplane installation, and is densely populated with through-hole ICs, resistor networks, red capacitors, and discrete components on a green FR4 substrate. A 40-pin DIP processor or logic IC is mounted at center, accompanied by a 1.843200 MHz crystal oscillator for clocking. Twelve test point locations (TP2 through TP12) are labeled across the board surface. Seven vertical white trace indicator lines are silkscreened for layout reference. The EIA designation indicates this board handles EIA-standard serial communication or digitizing interface functions within the CNC control rack. A serial number label area is present at the lower right edge. The board carries an orientation marking of UP with an arrow for correct rack installation. With the G\u0026amp;L 8000 control platform at end-of-life status per Fives, replacement interface boards such as this one are increasingly scarce for facilities maintaining legacy Giddings and Lewis horizontal boring mills, vertical turning centers, and other G\u0026amp;L CNC equipment. No voltage rating was confirmed from the provided photos.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-512\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856429101296,"sku":"m00512","price":49.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/F2A6013E-6160-41EB-96D4-BAEEB9EE286C.png?v=1784036018"},{"product_id":"giddings-and-lewis-eia-interface-board-502-02804-50-0226-513","title":"Giddings \u0026 Lewis 502-02804-50 EIA Interface Board","description":"\u003cp\u003eThis Giddings and Lewis EIA Interface board, part number 502-02804-50 (assembly number 501-03168-00, serial number 257), is a large-format CNC control circuit board designed for use in Giddings and Lewis machine control systems including the G\u0026amp;L 8000 and 8000B NumeriPath CNC platforms. The board features dual gold-finger edge connectors on both the left and right edges for backplane installation, and is populated throughout with through-hole ICs, resistor networks, red capacitors, and discrete components on a green FR4 substrate. A 40-pin DIP processor or logic IC is mounted at center lower, accompanied by a 1.843200 MHz crystal oscillator. Seven vertical white trace indicator lines are silkscreened for layout reference, and multiple test point locations are labeled across the board surface. Two coaxial connectors are visible at lower right. The EIA designation indicates this board handles EIA-standard serial communication or digitizing interface functions within the CNC control rack. The UP orientation arrow with directional marking is cast into the board housing for correct rack installation. With the G\u0026amp;L 8000 control platform at end-of-life status per Fives, replacement EIA Interface boards such as this one are increasingly scarce for facilities maintaining legacy Giddings and Lewis horizontal boring mills, vertical turning centers, and other G\u0026amp;L CNC equipment. No voltage rating was confirmed from the provided photos.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-513\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856430739696,"sku":"m00513","price":49.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/6D788A4C-A885-41CD-B949-A6CD7B7FF26B.png?v=1784037386"},{"product_id":"giddings-and-lewis-color-graphics-sbx-board-502-03504-00-0226-514","title":"Giddings \u0026 Lewis 502-03504-00 Color Graphics SBX Board","description":"\u003cp\u003eThis Giddings and Lewis Color Graphics SBX board, part number 502-03504-00 (assembly number 501-04478-00, REV-1, dated 11\/87, serial D04220), is a CNC operator display graphics sub-board designed for use in Giddings and Lewis CNC machine control systems including the G\u0026amp;L 8000 and 8000B NumeriPath platforms. The board is built around a Hitachi HD63484CP8 advanced CRT controller in a large QFP package, supported by HD63485CP32 and HD63486CP32 graphics co-processor ICs for color display generation. A DALE XO-43B 25.000 MHz crystal oscillator provides the system clock. An onboard EPROM at position U4 is labeled 502-53756-00 \/ 89986-00. Additional ICs include a KM41C464Z-10 DRAM and SN74HC541N buffer. FAIL and PASS status LEDs with associated fuse holders (550-0405 and 550-0205) provide onboard self-test indication. A 50-pin and 40-pin ribbon cable connector are present at the top edge for sub-board interconnection. Construction is mixed through-hole and surface mount on a green FR4 substrate with yellow SMD capacitors throughout. The Color Graphics SBX board provides the color video output function for the G\u0026amp;L CNC operator pendant display. With the G\u0026amp;L 8000 control platform at end-of-life status per Fives, color graphics boards of this type are increasingly scarce for facilities maintaining legacy Giddings and Lewis horizontal boring mills and vertical turning centers.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-514\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856432836848,"sku":"m00514","price":999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/B02D918F-E7B2-4C45-878F-9BBEE42BAE5D.png?v=1784037284"},{"product_id":"giddings-and-lewis-operator-station-board-502-03419-00-0226-515","title":"Giddings \u0026 Lewis 502-03419-00 Operator Station Board","description":"\u003cp\u003eThis Giddings and Lewis Operator Station Board, part number 502-03419-00 (OEM equivalent M.1017.6227-00, serial 467403, dated 5\/88, additional label 350603), is a large-format CNC operator interface and control board designed for use in Giddings and Lewis CNC machine control systems including the G\u0026amp;L 8000 and 8000B NumeriPath platforms. The board hosts an integrated SBX sub-board (502-52941-00 \/ 89169-00) mounted in the center section via edge connectors, providing expanded operator station processing capability. Three Vitec 54P2892 DC\/DC power converter modules are mounted onboard to supply regulated voltages. EPROM arrays at upper right are labeled 502-51447-00 and 502-51449-00. A PLD device is present at PLD1. Power input connectors J13, J14, and J15 provide +5V, +12V, -12V, and GND connections. A relay K2 and multiple blue ribbon cable connectors are present for operator panel interfacing. The board is densely populated with through-hole and surface mount ICs, yellow SMD capacitors, resistor networks, and discrete components on a green FR4 substrate throughout. Serial labels 230600 are visible on installed memory devices. The Operator Station Board serves as the primary interface between the machine operator pendant and the G\u0026amp;L CNC control rack. With the G\u0026amp;L 8000 control platform at end-of-life status per Fives, operator station boards of this type are among the most sought-after replacement components for facilities maintaining legacy Giddings and Lewis horizontal boring mills and vertical turning centers.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-515\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856452858096,"sku":"m00515","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/58FC4E96-7023-4F5D-ACE1-4AC3B903EC60.png?v=1784037195"},{"product_id":"giddings-and-lewis-central-service-module-502-03418-00-0226-516","title":"Giddings \u0026 Lewis 502-03418-00 Central Service Module","description":"\u003cp\u003eThis Giddings and Lewis Central Service Module, part number 502-03418-00 (assembly number 501-04304-00, REV-2, dated 11.98), is a large-format CNC control processor board designed for use in Giddings and Lewis machine control systems including the G\u0026amp;L 8000 and 8000B NumeriPath CNC platforms. This later date code example features an expanded DRAM memory array populated with KM6323568LP devices at positions U3 through U18, providing increased on-board memory capacity relative to earlier revisions. Three large yellow electrolytic capacitors provide bulk power filtering. An RTC real-time clock IC is present at position U63, and a DALE XO-43B 10.000 MHz crystal oscillator provides system timing at Y1. Memory sub-board EPROMs are labeled 502-52974-00 \/ 89202-00, 502-52975-00 \/ 89203-00, 502-52976-00 \/ 89204-00, and 502-52977-00 \/ 89205-00. SBX1 and SBX2 expansion connectors and multiple blue ribbon cable connectors are present for sub-board and inter-module interfacing. Voltage test points for +5V, +12V, and -12V are silkscreened on the left edge. The board is densely populated with through-hole and surface mount ICs and yellow SMD capacitors throughout on a green FR4 substrate. The Central Service Module manages system timing, memory, and inter-module communication within the G\u0026amp;L CNC control rack. With the G\u0026amp;L 8000 platform at end-of-life status per Fives, replacement central service modules are increasingly scarce for facilities maintaining legacy Giddings and Lewis horizontal boring mills and vertical turning centers.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-516\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856455839984,"sku":"m00516","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/CA3AD1D7-AA76-4B6C-8BCB-C59C9A30DA2B.png?v=1784037089"},{"product_id":"giddings-lewis-dual-servo-sbx-board-501-04309-01-0326-519","title":"Giddings \u0026 Lewis 501-04309-01 Dual Servo SBX Board","description":"\u003cp\u003eThe PCB assembly marked 501-04309-01 is a Dual Servo SBX board, revision 1, dated 3\/88 per the silkscreen on the component side. A secondary PCB identifier, 502-03423-01, is also printed on the board and may represent an assembly or schematic reference number. The board is a full-length, multi-layer design populated with a dense array of through-hole integrated circuits including Harris CMOS logic, National Semiconductor HC-series logic, and a DAC811AH digital-to-analog converter. A DALE crystal oscillator marked XO-43B at 16.384 MHz is mounted on the component side, and a gold-lidded ceramic IC package is visible near the oscillator. The board features a card-edge connector on one end and a 40-pin ribbon cable connector populated with a blue IDC header. The designation \"DUAL SERVO SBX\" indicates the board is intended for dual-axis servo interface functions within a CNC or industrial automation control system. The assembly number 501-04309-01 is the primary market-recognized identifier for this board. Revision 1 is silkscreened directly on the PCB. The manufacturer is not identified by visible logo or marking on either side of the board.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0326-519\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856676172016,"sku":"m00519","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/07978DE8-BBF4-4BFF-9335-FFDECD38ABE3.png?v=1784037868"},{"product_id":"giddings-and-lewis-dual-servo-sbx-board-502-03423-01-0226-518","title":"Giddings \u0026 Lewis 502-03423-01 Dual Servo SBX Board","description":"\u003cp\u003eThis Giddings and Lewis Dual Servo SBX board, part number 502-03423-01 (assembly number 501-04309-01, REV-1, dated 3\/88), is a CNC servo control sub-board designed for use in Giddings and Lewis machine control systems including the G\u0026amp;L 8000 and 8000B NumeriPath CNC platforms. The board provides dual-axis analog servo command output and feedback processing for CNC axis drives. Key components include a Burr Brown DAC811AH precision 12-bit digital-to-analog converter for servo command signal generation, a DALE XO-43B 16.384 MHz crystal oscillator, an LM339N quad comparator, a DG212CJ precision analog switch, Maxim ICs, and an IM6116CPI static RAM. Logic devices throughout include MC74HC and MM74HC series ICs. A sub-board at position N1 is labeled 502-52984-00 \/ 89212-00. PASS and FAIL status LEDs provide onboard diagnostic indication, and STR and ZERO test points are present for calibration. The board is populated on a gold-tinted FR4 substrate with yellow SMD capacitors and resistor networks throughout. The Dual Servo SBX interfaces with the main CNC control board to deliver precise analog velocity or torque commands to two servo drives simultaneously. With the G\u0026amp;L 8000 platform at end-of-life status per Fives, servo SBX boards are actively sought by facilities maintaining legacy Giddings and Lewis horizontal boring mills and vertical turning centers.\u003c\/p\u003e\n\u003cp\u003eStock # 0226-518\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856688525552,"sku":"m00518","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/7F6D7102-5E4B-4D78-8343-D0D231B6573B.png?v=1784037925"},{"product_id":"giddings-lewis-servo-interface-pcb-assembly-501-03882-00-502-03092-00-0226-521","title":"Giddings \u0026 Lewis 501-03882-00 \/ 502-03092-00 Servo Interface PCB Assembly","description":"\u003cp\u003eThis is a used Giddings \u0026amp; Lewis Electronics servo interface PCB assembly bearing part numbers 501-03882-00 and 502-03092-00, silkscreened directly on the board. The Giddings \u0026amp; Lewis brand logo is printed on the board face. Date code RC 5\/84 is visible on the silkscreen. The board is configured with two servo channels, labeled SIG and FDBK, with signal groups including COS, SIN, IND, RES, DRV CMD, and GND connections along the left edge via a gold-edge card connector. A second gold-edge card connector labeled MACH CONN is located along the right edge with numbered positions up to position 24. Two TO-3 package power transistors marked S8624 and LH0101CK are mounted on heatsinks and are visible on the board face. Active ICs include LMB652, AM0640 (x2), and R3162 (x2). Precision resistor networks include Dale RS-7 series 0.05% tolerance resistors. Trimmer potentiometers labeled GAIN, BAL, VR1-1, and VR1-2 are present and accessible for adjustment. Multiple test points are distributed across the board face. The board uses through-hole construction throughout. This assembly is consistent with resolver-based analog servo interface applications used in Giddings \u0026amp; Lewis CNC machine tool systems. Physical condition shows signs of prior installation and use. Revision code 5\/84 suggests this board is from the Giddings \u0026amp; Lewis legacy CNC product line.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-521\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856692785392,"sku":"m00521","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/8C7AD6F7-C171-4225-928A-E1076E2F6E25.png?v=1784037714"},{"product_id":"giddings-lewis-servo-board-pcb-assembly-501-03852-00-502-03055-00-0226-523","title":"Giddings \u0026 Lewis 501-03852-00 \/ 502-03055-00 Servo Board PCB Assembly","description":"\u003cp\u003eThis is a used Giddings \u0026amp; Lewis Electronics servo board PCB assembly bearing part numbers 501-03852-00 and 502-03055-00, silkscreened directly on the board face. The Giddings \u0026amp; Lewis brand logo is printed on the board. The board is a large-format, high-density through-hole assembly configured for four independent servo channels labeled SERVO CHAN A, B, C, and D along the left edge. A gold-edge card connector labeled BOARD connects along the bottom left, and a second connector labeled P1 is located along the right edge with numbered positions to 47. A Burr-Brown DAC80Z-CBI-V D\/A converter IC is visible on the board face. A 16.384 MHz crystal oscillator Y-1 is present. The board is densely populated with National Semiconductor logic ICs including DM74LS174N, DM74LS244N, DM74LS160AN, DM74LS373N, DM74LS373AN, DM74LS240N, DM74LS138N, DM74LS123N, DM74LS20N, DM74LS164N, DM74LS73AV, DM7406N, and MC74F32ND5 and MC74F174NDS fast logic devices. Intersil IH6108CPE analog switches and TL082CP dual op-amps are present at multiple positions. IC positions include IC-1 through IC-86 as visible on the silkscreen. Test points TP1 through TP3 and trimmer potentiometer COS VR1 are accessible on the board face. Physical condition shows signs of prior installation and use. This board is consistent with multi-axis analog servo control applications in Giddings \u0026amp; Lewis legacy CNC machine tool systems.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-523\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856699371760,"sku":"m00523","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/CB6B4C15-1032-4113-ACBF-98EFA0544C27.png?v=1784038381"},{"product_id":"giddings-lewis-processor-module-pcb-assembly-501-03865-01-502-03061-02-0226-524","title":"Giddings \u0026 Lewis 501-03865-01 \/ 502-03061-02 Processor Module PCB Assembly","description":"\u003cp\u003eThis is a used Giddings \u0026amp; Lewis Electronics processor module PCB assembly bearing part numbers 501-03865-01 and 502-03061-02, silkscreened directly on the board face. The Giddings \u0026amp; Lewis brand logo is printed on the board. The board is a large-format, multi-layer through-hole assembly designed for use as a CPU processor module in a Giddings \u0026amp; Lewis CNC control system. Visible active ICs include a gold-lid Intel processor at IC-14, Intel 8284 clock generator, Intel 8288 bus controller, NEC D8259AC-2 programmable interrupt controller, MC2661PB and MC68661PB serial communications ICs, and Motorola MC68B50P. Logic ICs include SN75188N, AM26LS30PCB, AM26LS32PC-B, SN74LS00N, SN74LS04M, SN74LS640N, SN74LS245N, SN74LS240N, SN74LS373N, SN74LS138N, SN74LS273N, SN74LS244N, SN79LS32N, DM74LS174N, DM74LS244N, DM74LS160AN, DM74LS32H, and DM74LS20N among others. EPROMs and RAM ICs are present at multiple positions including 502-57554-00, 502-57555-00, 502-03333-01, and 502-03354-01. Board sections visible include TERMINATION SELECTION jumpers for TX, RTS, and DTR on channels A and B, ASYNC interface header J1, EXPANSION BUS connector CONN B, and gold-edge card connector P1. Test points and trimmer potentiometer V3-1 are accessible on the board. Physical condition shows signs of prior installation and use.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-524\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856709923056,"sku":"m00524","price":799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/6F792CEC-A00B-4B91-889A-B8DA593D9775.png?v=1784038357"},{"product_id":"giddings-lewis-ad-fast-input-pcb-assembly-501-04171-00-502-03325-00-0226-525","title":"Giddings \u0026 Lewis 501-04171-00 \/ 502-03325-00 A\/D and Fast Input PCB Assembly","description":"\u003cp\u003eThis is a used Giddings \u0026amp; Lewis Electronics A\/D and fast input PCB assembly bearing part numbers 501-04171-00 and 502-03325-00, silkscreened directly on the board face. The Giddings \u0026amp; Lewis brand logo is printed on the board. The board is a large-format, high-density through-hole and mixed-technology assembly. The primary analog data acquisition device is a Burr-Brown SDM857JG Data Acquisition System IC in an 80-pin package, mounted at the center of the board. An onboard DC\/DC power supply module by Computer Products Stevens-Arnold is installed and labeled A05015\/150, providing regulated internal supply voltages. Board silkscreen markings indicate +12V and -12V supply rails. Connector sections include CONN 1 through CONN 5 along the left edge for A\/D channel inputs, a FAST INPUT section along the lower left, and gold-edge card connectors labeled CONN 2, BOARD, and P1 CONN along the board edges. Trimmer potentiometers VR1-1, VR2-1, and associated GAIN and OFFSET adjustments are accessible on the board face. Logic ICs include MM74HC244N, SN74LS640N, MM74HC00N, MM74HC138N, MM74HC540N, MM74HC688N, MM74HC73N, MM74HC541N, MM74HC08N, MM74HC04N, MM74HC164N, DM74LS240AN, and SN74LS145N. An EPROM at IC-32 is marked 502-70207-00 \/ 60228-00 \/ 70209. Test points including GRD TP9 and labeled power test points are present. Physical condition shows signs of prior installation and use. Date code on the power supply module indicates 8848, placing manufacture in late 1988.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-525\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856747671792,"sku":"m00525","price":750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/871024CF-7376-4999-AC07-84A114F8698A.png?v=1784038310"},{"product_id":"giddings-lewis-servo-board-pcb-assembly-501-03852-00-502-03055-00-0226-526","title":"Giddings \u0026 Lewis 501-03852-00 \/ 502-03055-00 Servo Board PCB Assembly","description":"\u003cp\u003eThis is a used Giddings \u0026amp; Lewis Electronics servo board PCB assembly bearing part numbers 501-03852-00 and 502-03055-00, silkscreened directly on the board face. The Giddings \u0026amp; Lewis brand logo is printed on the board. The board is a large-format, high-density through-hole assembly configured for four independent servo channels labeled SERVO CHAN A, B, C, and D along the left edge. Gold-edge card connectors labeled BOARD and P1 are located along the board edges with numbered positions to 85 and 39 respectively. A Burr-Brown AMNDAC80-CBI-V D\/A converter IC is visible on the board face. Active ICs include Intersil IH6108CPE analog switches with K8637 date codes at multiple positions, Texas Instruments TL082CP dual op-amps, NE5332 and NE5532P precision op-amps at IC-32 and IC-50 positions, and Motorola MC74F32NDS and MC74F174NDS fast logic. Logic ICs include DM74LS174N, SN74LS244N, DM74LS160AN, SN74LS161AN, DM74LS153N, DM74LS374N, SN74LS240N, SN74LS138N, SN74LS123N, SN74LS20N, DM74LS08N, SP8540A, DM74LS164N, and DM7406N. Trimmer potentiometers VR1 with COS and 5K markings and 20K trimmers are accessible on the board. Test points TP1, TP2, and GND TP9 are present. Board sections include 4KHZ COS, 4KHZ SIN, and BOARD TEST labels consistent with resolver-based servo feedback applications. Physical condition shows signs of prior installation and use. This board is consistent with multi-axis analog servo control in Giddings \u0026amp; Lewis legacy CNC machine tool systems.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-526\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856752980208,"sku":"m00526","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/403393FF-739C-4F37-965C-C63D4D614A89.png?v=1784038214"},{"product_id":"giddings-lewis-electronics-servo-board-pcb-assembly-501-03852-00-502-03055-00-0226-527","title":"Giddings \u0026 Lewis 501-03852-00 \/ 502-03055-00 Servo Board PCB Assembly","description":"\u003cp\u003eThis is a used Giddings \u0026amp; Lewis Electronics servo board PCB assembly bearing part numbers 501-03852-00 and 502-03055-00, silkscreened directly on the board face. The Giddings \u0026amp; Lewis brand logo is printed on the board. The board is a large-format, high-density through-hole assembly configured for four independent servo channels labeled SERVO CHAN A, B, C, and D along the left edge. Gold-edge card connectors labeled BOARD and P1 are located along the board edges. A Burr-Brown DAC80P-CBI-V D\/A converter IC is visible on the board face. A 16.384 MHz crystal oscillator Y-1 is present. Primary analog switch ICs are Maxim DG503ACJ and DG508ACJ at IC-1 and IC-2 positions with 8819 date codes, representing a later production revision compared to Intersil IH6108CPE-populated variants of the same board. Texas Instruments TL082CP dual op-amps are present at multiple positions. NE5532 and NE5532P precision op-amps appear at IC-12, IC-32, IC-54, IC-76, and IC-82 positions. Linear Technology LT1055 precision op-amps are present at IC-69, IC-82, and IC-84. Logic ICs include SP8818A DM74LS174N, SP8812A DM74LS244N, SN74LS160AN, DM74LS161AN, SN74LS640N, SN74LS240N, DM74LS138N, DM74LS373N, SP8730A DM74LS123N, SN74LS04N, DM74LS20N, DM74LS08N, SP8552 DM74LS164N, SP8736A DM74LS73AN, SN74LS682N, and DM7406N among others. MC74F32NDS and MC74F174NDS fast logic ICs are present. Test points TP1, TP2, and GND TP9 are accessible. Physical condition shows signs of prior installation and use.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-527\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856761368816,"sku":"m00527","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/2A975B11-D403-4390-BE5D-832DDF350FFF.png?v=1784038158"},{"product_id":"giddings-lewis-electronics-servo-board-pcb-assembly-501-03852-00-502-03055-00-0226-528","title":"Giddings \u0026 Lewis 501-03852-00 \/ 502-03055-00 Servo Board PCB Assembly","description":"\u003cp\u003eThis is a used Giddings \u0026amp; Lewis Electronics servo board PCB assembly bearing part numbers 501-03852-00 and 502-03055-00, silkscreened directly on the board face. The Giddings \u0026amp; Lewis brand logo is printed on the board. The board is a large-format, high-density through-hole assembly configured for four independent servo channels labeled SERVO CHAN A, B, C, and D along the left edge. Gold-edge card connectors labeled BOARD and P1 are located along the board edges with numbered positions to 85 and 39 respectively. A Burr-Brown AMNDAC80-CBI-V D\/A converter IC is visible on the board. A 16.384 MHz crystal oscillator Y-1 is present. Primary analog switch ICs are Intersil IH6108CPE at IC-1, IC-2, IC-44, IC-64, IC-74, IC-79, and additional positions with K8701 date codes. Motorola TL082CP and TL080CP dual op-amps are present at multiple positions. NE5532 and NE5532P precision op-amps appear at IC-32, IC-54, and IC-76. Linear Technology LT1055 op-amps are present at IC-77, IC-82, and IC-84. Logic ICs include SP8652A DM74LS174N, SP8712A DM74LS244N, SN74LS160AN, DM74LS161AN, SN74LS640N, SN74LS240N, SN74LS138N, SN74LS123N, SN74LS04N, DM74LS08N, SP8652A DM74LS164N, SP8652A DM74LS73AN, SN74LS682N, PB504A DM74LS20N, and DM7406N among others. MC74F32NDS and MC74F174NDS fast logic ICs are present with 8625A and 8552 date codes. Test points TP1, TP2, GND TP9, and D\/A OUT TP3 are accessible on the board face. Physical condition shows signs of prior installation and use.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-528\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856762122480,"sku":"m00528","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/CB05C7B6-F208-490E-8261-822DB4AC4504.png?v=1784040976"},{"product_id":"giddings-lewis-servo-board-pcb-assembly-501-03852-00-502-03055-00-0226-529","title":"Giddings \u0026 Lewis 501-03852-00 \/ 502-03055-00 Servo Board PCB Assembly","description":"\u003cp\u003eThis is a used Giddings \u0026amp; Lewis Electronics servo board PCB assembly bearing part numbers 501-03852-00 and 502-03055-00, silkscreened directly on the board face. The Giddings \u0026amp; Lewis brand logo is printed on the board. The board is a large-format, high-density through-hole assembly configured for four independent servo channels labeled SERVO CHAN A, B, C, and D along the left edge. Gold-edge card connectors labeled BOARD and P1 are located along the board edges. A Burr-Brown AMNDAC80-CB1-V D\/A converter IC is visible on the board. Primary analog multiplexer ICs are Texas Instruments DG508ACJ at IC-1, IC-2, IC-44, IC-64, IC-74, IC-79, and additional positions, with T8730 and T8712 date codes, representing a production variant substituting TI DG508ACJ devices in place of the Intersil IH6108CPE used in earlier revisions. Texas Instruments TL082CP dual op-amps branded 722 X B are present at multiple positions. NE5532 and NE5532P precision op-amps appear at IC-32, IC-54, and IC-76. Linear Technology LT1055 op-amps are present at IC-69, IC-77, and IC-82. Logic ICs include P8730A DM74LS174N, P8730A DM74LS244N, SN74LS640N, SN74LS240N, SN74LS138N, SN74LS123N, SN74LS04N, DM74LS08N, SP8730A DM74LS73AN, SN74LS682N, PB504A DM74LS20N, SP8632A DM74LS164N, and DM7406N among others. MC74F32NDS and MC74F174NDS fast logic ICs are present. Test points TP1, TP2, and GND TP9 are accessible. Physical condition shows signs of prior installation and use.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-529\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856762941680,"sku":"m00529","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/057E71D6-26D7-49E5-B7B9-70F0B78B4000.png?v=1784040928"},{"product_id":"giddings-lewis-servo-board-pcb-assembly-501-03852-00-502-03055-00-0226-530","title":"Giddings \u0026 Lewis 501-03852-00 \/ 502-03055-00 Servo Board PCB Assembly","description":"\u003cp\u003eThis is a used Giddings \u0026amp; Lewis Electronics servo board PCB assembly bearing part numbers 501-03852-00 and 502-03055-00, silkscreened directly on the board face. The Giddings \u0026amp; Lewis brand logo is printed on the board. The board is a large-format, high-density through-hole assembly configured for four independent servo channels labeled SERVO CHAN A, B, C, and D along the left edge. Gold-edge card connectors labeled BOARD and P1 are located along the board edges with numbered positions to 85 and 39 respectively. A Burr-Brown DAC80Z-CBI-V D\/A converter IC is installed in a labeled D\/A CONVERTER socket on the board face. Primary analog switch ICs are Intersil IH6108CPE at IC-1, IC-2, IC-44, IC-64, IC-74, IC-79, and additional positions with 8431 date codes, representing an early production variant of this board. TL082CP dual op-amps branded 445 X P3 are present at multiple positions. NE5532 precision op-amps appear at IC-32 and IC-54 positions. Logic ICs include P8440A DM74LS174N, P8440A DM74LS244N, SN74LS640N, SN74LS240N, SN74LS138N, SN74LS123N, SN74LS04N, DM74LS08N, SP8404A DM74LS20N, SP8452A DM74LS164N, and DM7406N among others. MC74F32N and MC74F174N fast logic ICs are present with 8423 and 8427 date codes. Test points TP1, TP2, TP9 GND, and BOARD TEST labels are accessible on the board. Physical condition shows signs of prior installation and use. IC date codes of 8431 place manufacture in the first quarter of 1984.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-530\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856764514544,"sku":"m00530","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/35CDD369-2540-4156-9AED-ECE0C4AC426A.png?v=1784040802"},{"product_id":"giddings-lewis-servo-board-pcb-assembly-501-03852-00-502-03055-00-0226-531","title":"Giddings \u0026 Lewis 501-03852-00 \/ 502-03055-00 Servo Board PCB Assembly","description":"\u003cp\u003eThis is a used Giddings \u0026amp; Lewis Electronics servo board PCB assembly bearing part numbers 501-03852-00 and 502-03055-00, silkscreened directly on the board face. The Giddings \u0026amp; Lewis brand logo is printed on the board. Board serial number 41 8408 is visible on the silkscreen. The board is a large-format, high-density through-hole assembly configured for four independent servo channels labeled SERVO CHAN A, B, C, and D along the left edge. Gold-edge card connectors labeled BOARD and P1 are located along the board edges. A DAC-80-CBI-V D\/A converter IC in a gold-lid ceramic package with a 9984 date code is present, indicating a later component than surrounding ICs and suggesting possible field replacement. A 16.384 MHz crystal oscillator Y-1 is present. Primary analog switch ICs are Intersil IH6108CPE at IC-1, IC-2, IC-44, IC-64, IC-74, IC-79, and additional positions with 8431 date codes. Motorola TL082CDS dual op-amps branded 34002DS with K8622 date codes are present at multiple IC positions. NE5532 and NE5553 precision op-amps appear at IC-32, IC-54, and IC-76. Logic ICs include SP8516A DM74LS174N, SP8516A DM74LS244N, SN74LS640N, SN74LS240N, SN74LS138N, SN74LS123N, SN74LS04N, PB524A DM74LS08N, SP8516A DM74LS174N, PB444A DM74LS73AN, PB620A DM74LS20N, PB448AA DM74LS164N, and DM7406N among others. MC74F32NDS and MC74F174NDS fast logic ICs are present with 8623 and 8552 date codes. Test points TP1, TP2, GND TP9, and D\/A OUT TP3 are accessible. Physical condition shows signs of prior installation and use.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-531\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856765923568,"sku":"m00531","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/20F862BD-F7C9-4171-A438-BA00817DFD3F.png?v=1784039862"},{"product_id":"giddings-and-lewis-servo-interface-circuit-board-502-03420-00-0226-537","title":"Giddings \u0026 Lewis 502-03420-00 Servo Interface Circuit Board","description":"\u003cp\u003eThis listing is for a used Giddings and Lewis Servo Interface board, part number 502-03420-00, assembly drawing number 501-04306-00, Revision 1, dated 8\/87. This board is also referenced in some sources under the FIVES brand, which acquired the Giddings and Lewis machine tool product line. The board is described by the manufacturer as a PC Board Assembly, Servo Interface, and is confirmed discontinued by the original manufacturer.\u003c\/p\u003e\n\n\u003cp\u003eThe PCB silkscreen label reads \"SERVO INTERFACE\" and identifies both part numbers prominently. Signal labels visible along the edge connector include FDBK-1, FDBK-2, DRV-CMD, SIN-RES, COS-RES, SIN-IND, COS-IND, GND, and ZERO, indicating resolver-based servo feedback interface functionality. Additional labeled test points include QA1, QA2, QA3, and QA4. The board carries a BAL trimmer potentiometer and an Ohmite precision resistor (91J1R0, 10 ohm 1%) along with Dale RS-2C and RS-7 precision resistors marked 10 ohm 0.05%. Two power transistor packages are mounted at one edge via a heatsink bracket. The board uses a gold-finger edge connector for rack insertion.\u003c\/p\u003e\n\n\u003cp\u003eThis board is used in Giddings and Lewis CNC machine tool systems requiring resolver-based analog servo feedback interfacing.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-537\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856810422512,"sku":"m00537","price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/196BD686-9B21-4D96-99C6-ACC28ABFC78B.png?v=1784043143"},{"product_id":"giddings-and-lewis-io-communications-board-503-19770-10-0226-540","title":"Giddings \u0026 Lewis 503-19770-10 I\/O Communications Board","description":"\u003cp\u003eThis listing is for a used Giddings and Lewis I\/O Communications Board, part number 503-19770-10, assembly drawing number 501-04314-01, Revision 2. The full assembly identifier per available documentation is 503-19770-10 \/ 502-M.1200.0405 \/ 501-04314-01 REV-2. This board is manufactured by Giddings and Lewis, now part of the FIVES group following corporate acquisition.\u003c\/p\u003e\n\n\u003cp\u003eThe board silkscreen is printed in yellow on green and clearly labels the function as I\/O COMMUNICATIONS BOARD. A white sticker label reading 503-19770-10 is affixed over a portion of the silkscreen. The component side features a sparsely populated layout consistent with a communications interface function. Visible ICs include positions U1 through U12, resistor networks RN1 through RN5, test points TP1 through TP6 (labeled TP1, TP2, TP3-4, TP5-6), and jumper positions J7, J8, J9. A labeled EPROM or firmware chip at U11 carries the sticker 502-57972-00 \/ 94203-01. A large edge connector assembly is mounted along one edge for rack backplane connection. Additional connectors include a red FOT connector and toggle switch positions labeled PASS and FAIL. A crystal oscillator component Y1 is visible near the right edge.\u003c\/p\u003e\n\n\u003cp\u003eThis board is a discontinued, obsolete component available only through the industrial surplus market.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-540\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856823496944,"sku":"m00540","price":649.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/D4EBF7BA-0344-479E-9E34-5E3D1C7CC970.png?v=1784042677"},{"product_id":"giddings-and-lewis-digital-io-board-502-03064-00-0226-541","title":"Giddings \u0026 Lewis 502-03064-00 Digital I\/O Board","description":"\u003cp\u003eThis listing is for a used Giddings and Lewis Digital I\/O Board, part number 502-03064-00, dated 1\/86 RC. A white label sticker reading \"Digital I\/O 502-03064-00\" is affixed over the corresponding silkscreen area. The assembly drawing number 501-03855-00 is partially visible on the silkscreen. This board is manufactured by Giddings and Lewis, now part of the FIVES group.\u003c\/p\u003e\n\n\u003cp\u003eThis is a large-format dual-section Digital I\/O board providing two independent 16-channel (0 through 15) digital I\/O sections on a single PCB. Each section includes screw terminal blocks (TB) for field wiring, numbered I\/O points 1 through 28 minimum per section, individual fuse positions labeled FU1-0 through FU1-15, red LED status indicators labeled LED1-0 through LED1-15, and jumper positions for each channel. The board features two 30-position terminal strip edge connectors for rack backplane connection, and carries the N\/S barcode label on the component side. Visible ICs include positions labeled IC U, ICF U, and associated logic devices. Test points TP9 and additional TP positions are labeled on the board surface.\u003c\/p\u003e\n\n\u003cp\u003eThis board provides isolated digital input and output capability for Giddings and Lewis CNC machine tool control systems. It is a discontinued, obsolete component available only through the industrial surplus market.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-541\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856840175856,"sku":"m00541","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/D532F9DF-5815-4FA0-91FE-7C44E9D6815C.png?v=1784040345"},{"product_id":"giddings-and-lewis-digital-io-board-502-03064-00-0226-542","title":"Giddings \u0026 Lewis 502-03064-00 Digital I\/O Board","description":"\u003cp\u003eThis listing is for a used Giddings and Lewis Digital I\/O Board, part number 502-03064-00, dated 1\/86 RC. A white label sticker reading \"Digital I\/O 502-03064-00\" is affixed over the corresponding silkscreen area. The assembly drawing number 501-03855-00 is partially visible on the silkscreen. This board is manufactured by Giddings and Lewis, now part of the FIVES group.\u003c\/p\u003e\n\n\u003cp\u003eThis is a large-format dual-section Digital I\/O board providing two independent 16-channel (0 through 15) digital I\/O sections on a single PCB. Each section includes screw terminal blocks (TB) for field wiring, numbered I\/O points 1 through 28 minimum per section, individual fuse positions labeled FU1-0 through FU1-15, red LED status indicators labeled LED1-0 through LED1-15, and jumper positions for each channel. The board features two 30-position terminal strip edge connectors for rack backplane connection, and carries the N\/S barcode label on the component side. Visible ICs include positions labeled IC U, ICF U, and associated logic devices. Test points TP9 and additional TP positions are labeled on the board surface.\u003c\/p\u003e\n\n\u003cp\u003eThis board provides isolated digital input and output capability for Giddings and Lewis CNC machine tool control systems. It is a discontinued, obsolete component available only through the industrial surplus market.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-542\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856842174704,"sku":"m00542","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/4CD9D8A1-D897-4E54-A10B-85774275C21B.png?v=1784040521"},{"product_id":"giddings-lewis-dual-output-voltage-regulator-board-501-03175-00-0226-543","title":"Giddings \u0026 Lewis 501-03175-00 Dual-Output Voltage Regulator Board","description":"\u003cp\u003eThis listing is for a used Giddings and Lewis dual-output voltage regulator board, part number 501-03175-00, dated RA 8\/84. The board silkscreen is labeled REGULATOR and identifies two independently adjustable regulated output sections: VR1-1 for +12V and VR1-2 for -12V ADJUST. Terminal blocks labeled TB IN and TB OUT provide input and output wiring connections.\u003c\/p\u003e\n\n\u003cp\u003eThe board is populated with two TDK Lambda TO-3 package linear voltage regulators: an LAS15U (positive adjustable, date code 8515) and an LAS18U (negative adjustable, date code 8440), each mounted to individual black aluminum heat sinks. Adjustment potentiometers are 752-207 5K trimmer types, one per output channel. Bypass and filter capacitors include tantalum bead capacitors at C2-1, C2-2, C3-1, and C3-2 positions (marked X0104K5). Additional passive components include resistors and diodes on the component side. The board mounts via four corner holes.\u003c\/p\u003e\n\n\u003cp\u003eThis compact regulator board provides regulated dual ±12VDC supply for Giddings and Lewis CNC machine tool control system use. It is a discontinued, obsolete component available only through the industrial surplus market.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-543\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856844468464,"sku":"m00543","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/CD3FDDB8-89AD-4B6E-B43B-F70193D17093.png?v=1784039263"},{"product_id":"giddings-lewis-servo-board-502-03055-00-0226-545","title":"Giddings \u0026 Lewis 502-03055-00 Servo Board","description":"\u003cp\u003eThis listing is for a used Giddings and Lewis Servo Board, part number 502-03055-00, serial number C90735, date code 439708. The OEM nameplate label notes this version is replaced by the 502-03055-01 revision. The board is manufactured by Giddings and Lewis Electronics and carries the Giddings and Lewis logo on the PCB surface.\u003c\/p\u003e\n\n\u003cp\u003eThe 502-03055-00 is a densely populated multi-channel analog servo control board. Labeled servo channels on the board silkscreen include SERVO CHAN B, SERVO CHAN C, and SERVO CHAN D, with D\/A OUT and TP3 test point positions. Key components visible include a DAC80Z precision digital-to-analog converter, an MNDAC80-CBI-V hybrid DAC module, NE5532 and NE5533 dual op-amps, DG508ACJ 8-channel analog multiplexers, TLO82 JFET-input op-amps, LM339 quad comparators, 74LS-series logic ICs (LS240, LS374, LS573, LS640, LS138, LS123, LS20, LS08, LS174, LS00, LS164), MC74F32NDS and MC74F174NDS fast logic, and a Y-1 16.384 MHz crystal oscillator. The board uses yellow tantalum capacitors throughout and carries resistor networks at RN1-2 position. Edge connector P1 and labeled connectors provide backplane and external signal connections.\u003c\/p\u003e\n\n\u003cp\u003eThis board is a discontinued, obsolete component available only through the industrial surplus market. Repaired units are actively listed at significantly higher prices.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-545\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856847548656,"sku":"m00545","price":999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/D7E6EEAC-2226-4A4A-B0FD-178060D488AA.png?v=1784039460"},{"product_id":"giddings-and-lewis-servo-control-486-circuit-board-501-04707-00-0226-546","title":"Giddings \u0026 Lewis 501-04707-00 Servo Control 486 Circuit Board","description":"\u003cp\u003eGiddings and Lewis Servo Control 486 circuit board, part number 501-04707-00, revision R5, dated 10\/95. Also referenced by assembly sticker 503-25209-01. This large-format, multi-layer PCB was produced by Giddings and Lewis for use in their 486-based CNC machine tool control systems, including horizontal boring mills and machining centers equipped with the G\u0026amp;L Centurion and related control platforms.\u003c\/p\u003e\n\n\u003cp\u003eThe board features a dense population of through-hole and surface-mount components including multiple CHIPS-branded processor ICs, oscillator circuits, DIP logic packages, and numerous proprietary G\u0026amp;L subassembly ICs identified by 502-series part numbers. Three SBX expansion connectors are present along the left edge, consistent with the G\u0026amp;L modular backplane architecture. The board was manufactured in the United States.\u003c\/p\u003e\n\n\u003cp\u003eThis part number appears in active US surplus markets as a direct replacement for failed or damaged servo control boards in G\u0026amp;L 486-generation CNC systems. It is suited for facilities maintaining legacy Giddings and Lewis machine tools and requiring a spare or replacement servo control board. Compatibility should be confirmed against the specific machine control configuration prior to installation.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-546\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856864227568,"sku":"m00546","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/B2548C1D-E67B-48A9-A883-A83BB46D002D.png?v=1784039645"},{"product_id":"giddings-and-lewis-executive-control-board-501-04301-02-0226-547","title":"Giddings \u0026 Lewis 501-04301-02 Executive Control Board","description":"\u003cp\u003eGiddings and Lewis Executive Control Board, PCB board number 501-04301-02, catalog assembly number 502-03415-02. This large-format, multi-layer circuit board is part of the Giddings and Lewis 8000 and 8000B CNC control system, identified as the Executive Control Board in the G\u0026amp;L 8000 nest backplane architecture. The board is silkscreened \"EXECUTIVE CONTROL BD.\" and carries the board number and catalog number in yellow silkscreen along the bottom edge, consistent with standard G\u0026amp;L 8000 board labeling conventions.\u003c\/p\u003e\n\n\u003cp\u003eThe board is populated with Zilog Z88C681CP\/40 dual UART ICs, multiple SBX expansion connectors along the left edge, oscillator modules, Texas Instruments logic ICs, and numerous labeled subassembly EPROMs including 502-52996-00, 502-52995-00, 502-52994-00, and 502-52993-01 revision codes. Date codes visible on components indicate manufacture in the late 1980s. The board also features two 88C681CP\/40 labeled CH1 and CH2 designators visible in photo 2.\u003c\/p\u003e\n\n\u003cp\u003eThis board is used as a direct replacement or spare for the Executive Control Board position in G\u0026amp;L 8000 CNC systems. Compatible catalog numbers for this board number per G\u0026amp;L documentation include 503-19029-00, 573-19030-00, M.1008.0502, M.1016.8802, M.1017.3434, and M.1017.3435. Compatibility should be verified against the specific machine control configuration prior to installation.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-547\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856887984368,"sku":"m00547","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/610ACD92-CE55-4C85-A42B-46FBC7A6576F.png?v=1784039807"},{"product_id":"giddings-and-lewis-servo-interface-circuit-board-502-03092-00-0226-549","title":"Giddings \u0026 Lewis 502-03092-00 Servo Interface Circuit Board","description":"\u003cp\u003eGiddings and Lewis Electronics Servo Interface circuit board, catalog number 502-03092-00, PCB board number 501-03882-00, revision RC, dated 5\/84. The Giddings and Lewis logo appears on the component side along with the designation \"SERVO CHAN\" at connector P2 and labeled test points TP1 through TP10 along the left edge. Signal labels visible include GAIN, BAL, COS IND, RES CMD, DRV, SIN IND, FDBK 1, FDBK 2, and GND.\u003c\/p\u003e\n\n\u003cp\u003eThe board is populated with National Semiconductor LM301 and LM1458 op-amp ICs in DIP packages, two large TO-3 style power transistors identified as S8548 \/ LH0101CK mounted to purple anodized aluminum heat sinks, precision RS-7 wirewound resistors rated 100 ohm 0.05%, trimmer potentiometers, and gold-fingered edge connectors on both ends. The board was manufactured in the USA.\u003c\/p\u003e\n\n\u003cp\u003eThis board is listed in the Giddings and Lewis 8000 CNC circuit board inventory as the Servo Interface, where it provides the analog servo command and feedback interface function within the G\u0026amp;L CNC control system. It is suitable as a direct replacement or spare for compatible Giddings and Lewis CNC machine tool systems. Compatibility should be confirmed against the specific machine and control configuration prior to installation.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-549\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856892735728,"sku":"m00549","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/3EDE5834-CBD9-49B9-BF8A-38FABD5A8781.png?v=1784037754"},{"product_id":"giddings-lewis-servo-interface-circuit-board-501-03882-00-502-03092-00-0226-551","title":"Giddings \u0026 Lewis 501-03882-00 \/ 502-03092-00 Servo Interface Circuit Board","description":"\u003cp\u003eThis listing is for one used Giddings and Lewis Servo Interface circuit board, assembly number 501-03882-00, schematic number 502-03092-00, manufactured by Giddings and Lewis Electronics. The board carries internal reference label M.1008.0300 and serial number A27056 as visible on the board edge. The PCB is configured as a single-axis servo interface card with dual power transistor assemblies (National Semiconductor LH0101CK) mounted on heatsink brackets, precision Dale RS-7 resistors rated at 10 ohms 0.05%, and multiple LM301A and LM8652 op-amp ICs. Silkscreen designations include GAIN, BAL, COS, RES, CMD, DRV, SIN, IND, FDBK, and GND signal points along the left edge connector, with SERVO CHAN and P1 CONN edge connectors at the bottom and right. The board also references resolver and feedback signal conditioning consistent with analog servo axis control in Giddings and Lewis CNC machine tool systems. Physical condition shows populated components with no visible signs of burning, cracking, or missing parts. This board is intended for replacement or spare use in compatible Giddings and Lewis CNC systems utilizing this servo interface assembly. Buyers are responsible for confirming compatibility with their specific machine configuration prior to purchase.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-551\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856895815920,"sku":"m00551","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/F2A3F701-8DD2-4EC9-BE84-4A89585AFA0B.png?v=1784038017"},{"product_id":"giddings-and-lewis-servo-interface-circuit-board-501-03882-00-502-03092-00-0226-552","title":"Giddings \u0026 Lewis 501-03882-00 \/ 502-03092-00 Servo Interface Circuit Board","description":"\u003cp\u003eThis listing is for one used Giddings and Lewis Servo Interface circuit board, assembly number 501-03882-00, schematic number 502-03092-00, manufactured by Giddings and Lewis Electronics. The board carries serial number A16869 as visible on the barcode label at the board edge, with a revision date code of RC 5\/84 silkscreened on the top side. The PCB is configured as a single-axis servo interface card with dual power transistor assemblies (National Semiconductor LH0101CK) mounted on heatsink brackets, precision Dale RS-7 resistors rated at 100 ohms 0.05%, and multiple LM301 and MB444 op-amp ICs. Silkscreen designations include GAIN, BAL, COS, RES, CMD, DRV, SIN, IND, FDBK, and GND signal points along the left edge connector, with SERVO CHAN and P1 CONN edge connectors at the bottom and right sides. Signal conditioning components and layout are consistent with analog resolver feedback servo axis control used in Giddings and Lewis CNC machine tool systems. All components appear visually present with no visible signs of burning, cracking, or physical damage. This board is intended for replacement or spare use in compatible Giddings and Lewis CNC systems utilizing this servo interface assembly. Buyers are responsible for confirming compatibility with their specific machine configuration prior to purchase.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-552\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856897257712,"sku":"m00552","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/002836DF-682A-4A27-B306-C382E4FD4932.png?v=1784038207"},{"product_id":"giddings-and-lewis-servo-interface-circuit-board-501-03882-00-502-03092-00-0226-553","title":"Giddings \u0026 Lewis 501-03882-00 \/ 502-03092-00 Servo Interface Circuit Board","description":"\u003cp\u003eThis listing is for one used Giddings and Lewis Servo Interface circuit board, assembly number 501-03882-00, schematic number 502-03092-00, manufactured by Giddings and Lewis Electronics. The board carries serial number A26428 as visible on the barcode label at the board edge, with a revision date code of RC 5\/84 silkscreened on the top side. The PCB is configured as a single-axis servo interface card with dual power transistor assemblies (National Semiconductor LH0101CK) mounted on heatsink brackets, precision Dale RS-7 resistors rated at 100 ohms 0.05%, and multiple LM301 and MB652 op-amp ICs. Silkscreen designations include GAIN, BAL, COS, RES, CMD, DRV, SIN, IND, FDBK, and GND signal points along the left edge connector, with SERVO CHAN and P1 CONN edge connectors at the bottom and right sides. Signal conditioning components and layout are consistent with analog resolver feedback servo axis control used in Giddings and Lewis CNC machine tool systems. All components appear visually present with no visible signs of burning, cracking, or physical damage. This board is intended for replacement or spare use in compatible Giddings and Lewis CNC systems utilizing this servo interface assembly. Buyers are responsible for confirming compatibility with their specific machine configuration prior to purchase.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-553\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856900305136,"sku":"m00553","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/821674B2-70C8-4E54-BA53-8FAC4BE00360.png?v=1784038387"},{"product_id":"giddings-and-lewis-linear-isolator-circuit-board-501-04172-00-502-03326-00-0226-555","title":"Giddings \u0026 Lewis 501-04172-00 \/ 502-03326-00 Linear Isolator Circuit Board","description":"\u003cp\u003eThis listing is for one used Giddings and Lewis Linear Isolator circuit board, assembly number 501-04172-00, schematic number 502-03326-00. The serial number A98097 is visible on the barcode label at the board edge. The board is designed as a dual-channel linear signal isolation card featuring two Burr-Brown ISO100AP precision isolation amplifiers (IC-1 and IC-2), a Burr-Brown model 722 HV-ISO DC\/DC converter module (IC-3) providing isolated power, and two IC-4 and IC-5 DIP socket positions for additional signal conditioning. Each channel section is labeled SIG1 and SIG2 and includes a 12-position screw terminal block for field wiring connections, with terminals numbered 1 through 12. On-board trimmer potentiometers VR1-2, VR1-3, and VR1-4 are visible for channel calibration. Yellow film capacitors, ceramic disc capacitors, and metal film resistors populate the remaining circuit areas. A gold-fingered edge connector at the top of the board allows plug-in installation into a compatible Giddings and Lewis CNC backplane. This board functions to provide galvanic isolation of analog signals within Giddings and Lewis CNC machine tool control systems. All components appear visually present with no visible signs of burning, cracking, or physical damage. Buyers are responsible for confirming compatibility with their specific machine configuration prior to purchase.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-555\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856911085808,"sku":"m00555","price":239.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/BD723D0B-3505-4126-BB02-D0266F77FF4F.png?v=1784037091"},{"product_id":"giddings-and-lewis-linear-isolator-circuit-board-501-04172-00-502-03326-00-0226-556","title":"Giddings \u0026 Lewis 501-04172-00 \/ 502-03326-00 Linear Isolator Circuit Board","description":"\u003cp\u003eThis listing is for one used Giddings and Lewis Linear Isolator circuit board, assembly number 501-04172-00, schematic number 502-03326-00, with board number 374200 visible on the PCB. The board is designed as a dual-channel linear signal isolation card featuring two Burr-Brown ISO100AP precision isolation amplifiers (IC-1 and IC-2) and a Burr-Brown model 722 HV-ISO DC\/DC converter module (IC-3) providing isolated power for both channels. Each channel section is labeled SIG1 and SIG2 and includes a 12-position screw terminal block for field wiring connections with terminals numbered 1 through 12. Yellow film capacitors are installed at each terminal block section for signal filtering. IC-4 and IC-5 DIP socket positions are populated. On-board blue trimmer potentiometers VR1-2, VR1-3, and VR1-4 are present for per-channel offset and gain calibration. Metal film resistors and ceramic capacitors populate the remaining circuit areas. A gold-fingered edge connector at the top of the board allows plug-in installation into a compatible Giddings and Lewis CNC backplane. This board provides galvanic isolation of analog signals within Giddings and Lewis CNC machine tool control systems. All components appear visually present with no visible signs of burning, cracking, or physical damage. Buyers are responsible for confirming compatibility with their specific machine configuration prior to purchase.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-556\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856921800944,"sku":"m00556","price":239.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/8F9A0553-2E73-4549-BA01-E2C9891F7827.png?v=1784046274"},{"product_id":"giddings-and-lewis-eia-cl-convertor-circuit-board-501-03377-00-502-02918-00-0226-557","title":"Giddings \u0026 Lewis 501-03377-00 \/ 502-02918-00 EIA-CL Converter Circuit Board","description":"\u003cp\u003eGiddings and Lewis EIA-CL Convertor Circuit Board, assembly number 501-03377-00, schematic number 502-02918-00, manufactured by Giddings and Lewis Electronics. The board is a large-format double-sided PCB with gold-fingered edge connectors on both the left and right sides for backplane installation. The board revision date code RD 3.81 is silkscreened on the component side along with a SERIAL NO. designation, though the serial number field is blank in the available photos. A 12-position screw terminal block labeled 1TB provides field wiring connections for power and signal lines including +15V, GND (three positions), -15V, Current Loop + Input, Current Loop Output, Current Loop Input, Current Loop + Output, EIA Input, and EIA Output. Additional visible components include two optocoupler assemblies (MC1 and MC2), a red DIP switch array with 8 positions at position 13, small signal transistors, diodes, and resistors. The board functions as an EIA to current loop serial communications interface converter within Giddings and Lewis CNC machine tool control systems. All components appear visually present with no visible signs of burning, cracking, or physical damage. Buyers are responsible for confirming compatibility with their specific machine configuration prior to purchase.\u003c\/p\u003e\n\u003cp\u003eStock # 0226-557\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856937529584,"sku":"m00557","price":189.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/E873C1B6-F6DF-4339-B86A-B95E2EBEA504.png?v=1784046257"},{"product_id":"giddings-and-lewis-math-board-circuit-board-assembly-501-02988-00-502-02733-00-0226-558","title":"Giddings \u0026 Lewis 501-02988-00 \/ 502-02733-00 Math Board Circuit Board Assembly","description":"\u003cp\u003eThis listing is for one used Giddings and Lewis Math Board circuit board assembly, part number 501-02988-00, schematic number 502-02733-00, manufactured by Giddings and Lewis Electronics. The board number A219002 is visible on the component side. This is a large-format single-sided PCB with metal card guide rails installed on both the top and bottom edges and gold-fingered edge connectors along the left and right sides for backplane installation into a compatible Giddings and Lewis CNC control rack. The board is densely populated with rows of 14-pin and 16-pin DIP integrated circuits in black ceramic and plastic packages, consistent with TTL and MSI logic families used in arithmetic processing applications. Yellow labeled ICs marked 185 are visible throughout, along with red disc capacitors used for bypassing. The board functions as a math co-processor or arithmetic logic unit within the Giddings and Lewis CNC machine tool control system, performing floating point or integer arithmetic operations in support of the main CNC processor. This product has been discontinued by the original manufacturer and is available as a surplus replacement. All components appear visually present with no visible signs of burning, cracking, or missing parts. Buyers are responsible for confirming compatibility with their specific machine configuration prior to purchase.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-558\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856952537328,"sku":"m00558","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/9821E98C-7511-4118-B0D6-AABAB1C2F0FC.png?v=1784046204"},{"product_id":"giddings-lewis-eia-interface-circuit-board-501-03168-00-502-02804-50-0226-559","title":"Giddings \u0026 Lewis 501-03168-00 \/ 502-02804-50 EIA Interface Circuit Board","description":"\u003cp\u003eThis listing is for one used Giddings and Lewis EIA Interface circuit board, assembly number 501-03168-00, schematic number 502-02804-50, manufactured by Giddings and Lewis Electronics. A board number is visible at the upper left of the component side. This is a large-format double-sided PCB with metal card guide rails on both the top and bottom edges and gold-fingered edge connectors along the left and right sides for backplane installation. The board is densely populated with rows of 14-pin and 16-pin DIP integrated circuits marked with National Semiconductor DM74LS family designations including DM74LS00N, DM74LS08N, DM74LS30N, DM74LS42N, DM74LS86N, DM74LS174N, DM74LS513AN, and DM74LS536N devices, along with Motorola and Texas Instruments equivalents. A gold-lidded ceramic package IC is visible at board position BB1 center, accompanied by a metal can crystal oscillator marked 2.764 MHz. Red disc capacitors and yellow bypass capacitors are distributed throughout. Multiple test points are labeled TP1 through TP12. The board functions as an EIA serial communications interface processor within Giddings and Lewis CNC machine tool control systems. This product has been discontinued by the original manufacturer and is available as a surplus replacement. All components appear visually present with no visible signs of burning, cracking, or missing parts. Buyers are responsible for confirming compatibility with their specific machine configuration prior to purchase.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-559\u003c\/p\u003e","brand":"Giddings \u0026 Lewis","offers":[{"title":"Default Title","offer_id":48856957452528,"sku":"m00559","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/82DBFDA9-37CF-470D-92F2-07B42350A9A6.png?v=1784046188"}],"url":"https:\/\/mroexchange.com\/collections\/giddings-lewis.oembed?page=2","provider":"MRO Exchange","version":"1.0","type":"link"}