{"title":"Sanding Disc Backing Pads and Plates","description":"\u003cp\u003eSanding disc backing pads and hook and loop backing plates hold the abrasive flat and supported on angle grinders, DA sanders and polishers. Fabricators use them to run resin fiber discs on a grinder, and body shops and detailers use the hook and loop plates to mount sanding and polishing discs. Match the pad's thread to your tool's spindle before you order.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBacking pads for resin fiber discs in 4-1\/2\", 5\" and 7\", with a 5\/8\"-11 thread, for angle grinders\u003c\/li\u003e\n\u003cli\u003e6\" hook and loop backing plate with 6 holes and a 5\/16\"-24 thread, for DA orbital sanders and polishers\u003c\/li\u003e\n\u003cli\u003e6\" hook and loop backing plates with a 5\/8\"-11 thread, 2 per pack, for angle grinders, pneumatic grinders and vertical grinders, including a polyurethane version\u003c\/li\u003e\n\u003cli\u003eHook and loop face that takes hook and loop sanding and polishing discs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eWhat does a sanding disc backing pad do?\u003c\/h3\u003e\u003cp\u003eA backing pad sits between the grinder and the disc. A resin fiber disc is thin and flexible, so it needs a backing pad to hold it flat and spread the pressure while you grind. The pads here come in 4-1\/2\", 5\" and 7\", all with a 5\/8\"-11 thread for angle grinders.\u003c\/p\u003e\u003ch3\u003eWhich 6 inch backing pad fits my polisher?\u003c\/h3\u003e\u003cp\u003eFor a DA orbital sander or polisher, use the 6\" 6-hole backing plate with a 5\/16\"-24 thread. The other 6\" plates have a 5\/8\"-11 thread and are listed for angle grinders and pneumatic or vertical grinders.\u003c\/p\u003e\u003ch3\u003eCan I use a hook and loop backing pad on an angle grinder?\u003c\/h3\u003e\u003cp\u003eYes. The 6\" hook and loop backing plates with a 5\/8\"-11 thread are listed for angle grinders, pneumatic grinders and vertical grinders. Centre the disc on the plate so it runs true. Check the maximum RPM marked on the plate and on the sanding or polishing disc, and never exceed the lower of the two.\u003c\/p\u003e\u003ch3\u003eDo I need a different backing pad for each sanding disc size?\u003c\/h3\u003e\u003cp\u003eYes, for resin fiber discs. Use a pad that matches the disc diameter, so a 7\" fiber disc goes on the 7\" pad and a 4-1\/2\" disc on the 4-1\/2\" pad. For hook and loop sanding, the 6\" plates take 6\" hook and loop discs and pads.\u003c\/p\u003e\u003cp\u003eFind more grinder accessories in our \u003ca href=\"\/collections\/accessories\"\u003eaccessories\u003c\/a\u003e collection and the discs that go on these pads in \u003ca href=\"\/collections\/fiber-disc\"\u003eresin fiber discs\u003c\/a\u003e, and see our \u003ca href=\"\/blogs\/news\/fibre-disc-backing-pads-type-r-quick-change\"\u003efibre disc backing pad guide\u003c\/a\u003e and \u003ca href=\"\/blogs\/news\/angle-grinder-thread-arbor-size-chart\"\u003eangle grinder thread size chart\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"angle-grinder-backing-pad-for-resin-fiber-disc","title":"4-1\/2\", 5\" \u0026 7\" Backing Pads with 5\/8\"-11 Thread for Resin Fiber Discs","description":"\u003cp class=\"wa-rating-line\"\u003e\u003cstrong\u003eCustomer rating:\u003c\/strong\u003e 4.5 out of 5 from 5 customer ratings on our online marketplace store (November 2026).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e5\/8 inch-11 Metal Zinc-alloy Locking Nut included\u003c\/li\u003e\n\u003cli\u003eRigid Polypropylene Pad with Cast Alloy Plate\u003c\/li\u003e\n\u003cli\u003eSold individually\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What discs fit this backing plate?\u003c\/strong\u003e\u003cbr\u003eA: Hook-and-loop sanding and polishing discs matching the plate diameter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What thread or arbor is it?\u003c\/strong\u003e\u003cbr\u003eA: As listed in the title and specifications (e.g., 5\/8\"-11).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What tools does it fit?\u003c\/strong\u003e\u003cbr\u003eA: Angle grinders, sanders, and polishers with a matching spindle.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why use a backing plate?\u003c\/strong\u003e\u003cbr\u003eA: It gives discs a firm, balanced base for even sanding and polishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"4 1\/2\" x 5\/8\"-11","offer_id":47870702289117,"sku":"1H-KTUJ-PYN5","price":12.99,"currency_code":"CAD","in_stock":false},{"title":"5\" x 5\/8\"-11","offer_id":47870702354653,"sku":"WBP-002","price":12.99,"currency_code":"CAD","in_stock":true},{"title":"7\" x 5\/8\"-11","offer_id":47870702321885,"sku":"RY-PVLO-RUPG","price":14.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/099e7ec0.jpg?v=1777666776"},{"product_id":"wa-grinder-6-hook-and-loop-backing-plate-6-inch-da-air-random-orbital-polisher-sander-pad-6-hole-sanding-buffing-polishing-discs-backing-pad-pu-backing-5-16-24-threads","title":"6\" Hook \u0026 Loop Backing Plate – 6-Hole for DA Orbital Sander","description":"\u003cul\u003e\n\u003cli\u003e6\" Hook \u0026amp; Loop DA Backing Plate Pad. A high-performance, well-balanced, and long-lasting backing plate designed for dual-action random orbital sanders and polishers. It features a 10 mm thick, medium-density polyurethane foam construction that offers durability along with a flexible, low-profile beveled edge for improved control. The pad is equipped with a 5\/16\"-24 spindle thread, the universal standard compatible with most dual-action sanders and polishers across major brands.\u003c\/li\u003e\n\u003cli\u003eAn ideal backing plate for sanding and polishing in auto body and paint shops, detailing studios, woodworking and furniture manufacturing, metalworking, industrial settings, and DIY craft projects.\u003c\/li\u003e\n\u003cli\u003eDelivers fast, durable performance at speeds up to 12,000 RPM for a consistent, smooth finish.\u003c\/li\u003e\n\u003cli\u003eUniversal 5\/16\"-24 threaded backing pad, compatible with most air sanders used in woodworking, garage, and industrial applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What discs fit this backing plate?\u003c\/strong\u003e\u003cbr\u003eA: 6\" hook-and-loop sanding and polishing discs, including 6-hole dust-extraction discs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What thread is it?\u003c\/strong\u003e\u003cbr\u003eA: A universal 5\/16\"-24 spindle thread that fits most DA sanders and polishers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the max speed?\u003c\/strong\u003e\u003cbr\u003eA: Rated to 12,000 RPM — do not exceed the speed marked on your tool.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why use a backing plate?\u003c\/strong\u003e\u003cbr\u003eA: It gives discs a firm, balanced base for even sanding and longer disc life.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Will this work as a replacement sander backing pad?\u003c\/strong\u003e\u003cbr\u003eA: Yes. It fits DA random orbital sanders and polishers with a 5\/16\"-24 spindle, the universal thread used by most dual-action tools, so it can replace a worn 6\" pad. See all \u003ca href=\"\/collections\/backing-pads\"\u003ebacking pads and plates\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How is this 6\" hook-and-loop backing pad built?\u003c\/strong\u003e\u003cbr\u003eA: It is a 10 mm thick, medium-density polyurethane foam pad with a flexible, low-profile beveled edge for better control. The 6\" (150 mm) hook-and-loop face has 6 holes to match 6-hole dust-extraction discs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What jobs is this 6\" orbital sander backing pad used for?\u003c\/strong\u003e\u003cbr\u003eA: It handles sanding and polishing on dual-action random orbital sanders and polishers in auto body and paint shops, detailing studios, woodworking and furniture work, metalworking, industrial settings, and DIY craft projects.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I use it as an air sander backing pad?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The universal 5\/16\"-24 threaded pad is compatible with most air sanders used in woodworking, garage, and industrial applications. Always follow the maximum RPM marked on the pad and never exceed it.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"6 Holes","offer_id":47870705991901,"sku":"A-018","price":15.99,"currency_code":"CAD","in_stock":true},{"title":"No Hole","offer_id":47870706024669,"sku":"A-019","price":15.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/6b72e80a.jpg?v=1777666852"},{"product_id":"2pcs-6-hook-and-loop-backing-plate-backing-pad-with-5-8-11-5-8-inch-tpi-for-sanding-polishing-buffering-pads-6-inch-backer-pads-for-random-orbit-sander-angle-grinder-drill","title":"6\" Hook and Loop Backing Plate, Backing Pad with 5\/8\"-11 for Sanding","description":"\u003cul\u003e\n\u003cli\u003eValue Pack - Includes 2 PCS 6-inch hook \u0026amp; loop backing pads with 5\/8\"-11 thread, ideal for a wide range of polishing and sanding applications.\u003c\/li\u003e\n\u003cli\u003eStandard Size - 6\" diameter with 40mm total height, designed for stability and optimal control during operation.\u003c\/li\u003e\n\u003cli\u003eUniversal Compatibility - Equipped with a 5\/8\"-11 thread, compatible with most angle grinders, pneumatic grinders, and vertical grinders.\u003c\/li\u003e\n\u003cli\u003eSecure Hook \u0026amp; Loop Design - Premium hook and loop surface ensures strong adhesion to sanding or polishing pads, prevents shifting or spinning, and allows quick disc changes.\u003c\/li\u003e\n\u003cli\u003eDurable \u0026amp; Heat-Resistant - Flexible, high-quality polyurethane minimizes heat transfer; advanced casting securely bonds the threaded base for balanced performance and long life.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What discs fit this backing plate?\u003c\/strong\u003e\u003cbr\u003eA: Hook-and-loop sanding and polishing discs matching the 6\" plate diameter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What thread is it?\u003c\/strong\u003e\u003cbr\u003eA: 5\/8\"-11, which fits most angle grinders and polishers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What tools does it fit?\u003c\/strong\u003e\u003cbr\u003eA: Angle grinders, pneumatic grinders, and vertical grinders with a 5\/8\"-11 spindle.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why use a backing plate?\u003c\/strong\u003e\u003cbr\u003eA: It gives discs a firm, balanced base for even sanding and polishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"2 PC","offer_id":47870706254045,"sku":"A-020","price":21.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/248c1227.jpg?v=1777666852"},{"product_id":"2pack-6-hook-and-loop-backing-plate-backing-pad-with-5-8-11-5-8-inch-tpi-for-sanding-polishing-buffering-pads-6-inch-backer-pads-for-random-orbit-sander-angle-grinder-drill","title":"6\" Hook \u0026 Loop Backing Plate with 5\/8\"-11 Arbor for Sander\/Polisher","description":"\u003cul\u003e\n\u003cli\u003eValue Pack - Includes 2 PACK 6-inch hook \u0026amp; loop backing pads with 5\/8\"-11 thread, ideal for a wide range of polishing and sanding applications.\u003c\/li\u003e\n\u003cli\u003eStandard Size - 6\" diameter with 40mm total height, designed for stability and optimal control during operation.\u003c\/li\u003e\n\u003cli\u003eUniversal Compatibility - Equipped with a 5\/8\"-11 thread, compatible with most angle grinders, pneumatic grinders, and vertical grinders.\u003c\/li\u003e\n\u003cli\u003eSecure Hook \u0026amp; Loop Design - Premium hook and loop surface ensures strong adhesion to sanding or polishing pads, prevents shifting or spinning, and allows quick disc changes.\u003c\/li\u003e\n\u003cli\u003eDurable \u0026amp; Heat-Resistant - Flexible, high-quality polyurethane minimizes heat transfer; advanced casting securely bonds the threaded base for balanced performance and long life.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What discs fit this backing plate?\u003c\/strong\u003e\u003cbr\u003eA: Hook-and-loop sanding and polishing discs matching the 6\" plate diameter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What thread is it?\u003c\/strong\u003e\u003cbr\u003eA: 5\/8\"-11, which fits most angle grinders and polishers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What tools does it fit?\u003c\/strong\u003e\u003cbr\u003eA: Angle grinders, pneumatic grinders, and vertical grinders with a 5\/8\"-11 spindle.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why use a backing plate?\u003c\/strong\u003e\u003cbr\u003eA: It gives discs a firm, balanced base for even sanding and polishing.\u003c\/p\u003e\u003ch2\u003eWhy choose Whitby Abrasives\u003c\/h2\u003e\u003cp\u003eWhitby Abrasives Inc. is a Canadian supplier of professional grinding, cutting, sanding, and finishing abrasives. We focus on consistent quality, fair pricing, and fast shipping across Canada so fabricators, welders, woodworkers, contractors, and DIYers get abrasives that perform job after job. Have a question about sizing or the right grit for your project? Our team is happy to help.\u003c\/p\u003e","brand":"Whitby Abrasives","offers":[{"title":"2 PC","offer_id":47964408479965,"sku":"A-020","price":21.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/2693\/0141\/files\/248c1227.jpg?v=1777666852"}],"url":"https:\/\/whitbyabrasives.ca\/collections\/backing-pads.oembed","provider":"Whitby Abrasives Inc.","version":"1.0","type":"link"}