{"title":"Sunnen","description":"\u003cp\u003eIndustrial surplus Sunnen parts and equipment, in stock at MRO Exchange.\u003c\/p\u003e","products":[{"product_id":"sunnen-external-honing-stones-fd64aa75-fd64-series-2-stones-per-box-0326-880","title":"Sunnen FD64AA75 External Honing Stones FD64 Series 2 Stones Per Box Factory Sealed","description":"\u003cp\u003eThe Sunnen FD64AA75 is a set of two external honing stones manufactured by Sunnen Products Company for use with Sunnen FD-series external hone bodies. External honing stones in this series are used for finishing outside diameters on precision machined components, correcting surface irregularities such as taper, out-of-round, barrel shape, and centerless grind patterns. The AA designation in the part number identifies an aluminum oxide abrasive with vitrified bond, consistent with Sunnen's conventional abrasive line for external honing applications. The 75 designation indicates the grit and hardness grade within Sunnen's coding system. This type of abrasive is suited for a wide range of materials including hardened steel, soft steel, and ferrous alloys. The FD64 body series is part of Sunnen's external hone tooling product line, designed for low-production, tool room, salvage, and maintenance applications. These stones are sold as a box of two and are intended to work in conjunction with compatible Sunnen FD-series hone bodies and guide shoes. Sunnen is a US-based manufacturer headquartered in St. Louis, Missouri, and is recognized as a leading supplier of precision honing systems and abrasives for industrial and automotive applications. The box shows the Sunnen Products Co. branding consistent with the company's legacy packaging.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0326-880\u003c\/p\u003e","brand":"Sunnen","offers":[{"title":"Default Title","offer_id":48970215260400,"sku":"m00880","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/m00880.webp?v=1788457976"},{"product_id":"sunnen-honing-stone-set-fd64-aa93-0326-881","title":"Sunnen FD64-AA93 External Honing Stones FD64 Series Factory Sealed","description":"\u003cp\u003eThe Sunnen FD64-AA93 is a set of two external honing stones designed for use with Sunnen FD64 series external honing tooling. Part number FD64-AA93 is a genuine Sunnen product manufactured in the United States, as confirmed by the original Sunnen Products Co. box and label. The \"AA93\" suffix in Sunnen's abrasive coding designates an aluminum oxide abrasive at 93 grit, a coarse grade suited for aggressive stock removal in external honing applications. Sunnen external honing tooling is used in production and rebuild environments for honing outside diameters on shafts, pins, and other cylindrical components. The FD64 series stones are application-specific to the FD64 hone head and are not interchangeable with other Sunnen tool series. This listing includes two stones in the original Sunnen box. Country of manufacture is the United States.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0326-881\u003c\/p\u003e","brand":"Sunnen","offers":[{"title":"Default Title","offer_id":48970245570800,"sku":"m00881","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/m00881.webp?v=1788458007"},{"product_id":"sunnen-external-honing-stones-fd64aa73-fd64-series-2-stones-per-box-0326-882","title":"Sunnen FD64AA73 External Honing Stones FD64 Series 2 Stones Per Box Factory Sealed","description":"\u003cp\u003eThe Sunnen FD64AA73 is a two-piece set of external aluminum oxide honing stones in vitrified bond construction, part of Sunnen's FD64 tool series for external honing applications. External honing with Sunnen FD-series stones is used to finish and size the outer diameters of shafts, pins, and cylindrical workpieces on Sunnen horizontal honing machines equipped with compatible external hone bodies. The AA73 designation indicates aluminum oxide abrasive with vitrified bond in the 320-grit range, suited for precision finishing operations on ferrous and non-ferrous materials where a fine surface finish is required. This set contains two stones as indicated on the original factory packaging. Sunnen is an industry-leading manufacturer of honing abrasives and tooling based in St. Louis, Missouri, with products widely used in engine rebuilding, hydraulics, aerospace, and precision machining applications. FD64-series stones are compatible with Sunnen FD64 external hone bodies and are used in conjunction with matching FD64 guide shoes. This item is offered in its original factory box.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0326-882\u003c\/p\u003e","brand":"Sunnen","offers":[{"title":"Default Title","offer_id":48970270310640,"sku":"m00882","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/m00882.webp?v=1788458004"},{"product_id":"sunnen-honing-mandrel-2k-p28-2625sc-2605-in-to-2750-in-bore-range-0326-883","title":"Sunnen 2K-P28-2625SC Honing Mandrel 2.605 to 2.750 in Bore Range","description":"\u003cp\u003eThe Sunnen 2K-P28-2625SC is a 2-stone P28 series honing mandrel with a bore range of 2.605 in. to 2.750 in. (66.17 to 69.85 mm). The P28 platform is a long-established standard in Sunnen machine honing systems, compatible with a range of Sunnen horizontal honing machines that accept the P28 spindle drive interface. The 2K prefix designation indicates the mandrel body length class within the P28 family, which determines the maximum hone stroke available for a given application.\u003c\/p\u003e\n\n\u003cp\u003eThe mandrel body is constructed of aluminum with steel end components and features two stone slots with adjustable wedge-actuated stone expansion. Guide shoe slots are present on opposing sides of the body to accept standard SC-series bronze or steel guide shoes appropriate to this bore range. The \"SC\" suffix in the part number designates the guide shoe type compatible with this mandrel's bore range. Stone wedge and tension block components are integrated into the body design.\u003c\/p\u003e\n\n\u003cp\u003ePart number 2K-P28-2625SC is the OEM designation used consistently in active US market listings for this item. The mandrel is made in the United States by Sunnen Products Company, headquartered in St. Louis, Missouri, a manufacturer with a long history in precision bore finishing equipment and tooling.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0326-883\u003c\/p\u003e","brand":"Sunnen","offers":[{"title":"Default Title","offer_id":48970299965680,"sku":"m00883","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/m00883.jpg?v=1784227752"},{"product_id":"sunnen-honing-mandrel-2h-p28-2375wg-2355-in-to-2500-in-bore-range-orientation-axial-0326-884","title":"Sunnen 2H-P28-2375WG Honing Mandrel 2.355 to 2.500 in Bore Range Axial","description":"\u003cp\u003eA pair of Sunnen P28 two-stone honing mandrels, part number 2H-P28-2375WG, manufactured in St. Louis, Missouri, USA. Each mandrel body is stamped with the WG-D identifier and carries the 2H-P28-2375WG part number on the flat shank surface. The P28 series uses a keyed shank design for use with Sunnen vertical honing machines and is compatible with Sunnen P28 series stones, wedges, shoes, and truing sleeves. The WG designation corresponds to a bore sizing range of 2.355 in. to 2.500 in. (59.8 mm to 63.5 mm). The 2H prefix identifies this as a two-stone configuration with the H-series head length. Each mandrel features three slotted adjustment screws on the body face for stone and shoe positioning. The P28 mandrel platform is used for precision bore sizing and surface finishing in open, blind, slotted, and tandem-land bore configurations across automotive, heavy equipment, hydraulic, and general industrial applications. The current Sunnen catalog equivalent part number is 2HP282375WG. Both units are made in the USA. Stones, shoes, and truing sleeve are not included and are not visible in the photos.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0326-884\u003c\/p\u003e","brand":"Sunnen","offers":[{"title":"Default Title","offer_id":48970303635696,"sku":"m00884","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/223DF3FD-1CAD-406C-936A-2C960D65DE1F.png?v=1784803454"},{"product_id":"sunnen-honing-mandrel-rr-p28-2500wg-2480-in-to-2625-in-bore-range-0326-885","title":"Sunnen RR-P28-2500WG Honing Mandrel 2.480 to 2.625 in Bore Range","description":"\u003cp\u003eThe Sunnen 2H-P28-2500WG is a two-stone bore honing mandrel manufactured in St. Louis, Missouri, USA, and designed for use with Sunnen horizontal honing machines. The WG stone designation covers a bore diameter range of 2.480 in. to 2.625 in. (62.99 mm to 66.68 mm), making this mandrel suitable for finish honing bores in that size range. The 2H prefix indicates a two-stone configuration, and the assembly features the WS-D wedge and stone holder sections visible on the body. The mandrel body is constructed of hardened steel and interfaces with the Sunnen machine via a 45mm shank, approximately 12 in. in overall length. The P28 series mandrel is a long-running Sunnen platform used across a wide range of engine rebuilding, hydraulic component, and general bore finishing applications. Part number 2H-P28-2500WG is the OEM designation used consistently in the US surplus and industrial tooling market. Made in the USA.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0326-885\u003c\/p\u003e","brand":"Sunnen","offers":[{"title":"Default Title","offer_id":48970308747504,"sku":"m00885","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/m00885.png?v=1784297556"}],"url":"https:\/\/mroexchange.com\/collections\/sunnen.oembed","provider":"MRO Exchange","version":"1.0","type":"link"}