How does shipping work for orders on MRO Exchange?

Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

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MRO Exchange accepts all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available, with payment due prior to shipment. Custom terms are available for established accounts.

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Giddings and Lewis Servo Control 486 Circuit Board 501-04707-00

$899.00 USD

Sale Sold out

ConditionSurplus - Untested MPN501-04707 Stock #0226-00546

Photos reflect current condition. Items differing from description may be eligible for return or refund — see our condition guide.

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Estimated package weight: 10.0 lbs

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Giddings 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&L Centurion and related control platforms.

The 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&L subassembly ICs identified by 502-series part numbers. Three SBX expansion connectors are present along the left edge, consistent with the G&L modular backplane architecture. The board was manufactured in the United States.

This part number appears in active US surplus markets as a direct replacement for failed or damaged servo control boards in G&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.

Stock # 0226-546

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Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.