{"title":"D40B21 Sprockets","description":"\u003ch1\u003eD40B21 Roller Chain Sprockets\u003c\/h1\u003e\n\u003c!--BELOWPRODUCTS--\u003e\n\u003cb\u003e D40B21 sprockets feature a B-Style Hub which is a hub on one and they have 21 high-precision teeth. Our D40B21 double sprockets fully meet ANSI specifications to ensure proper contact between the sprocket teeth and #40-2 roller chain. Additionally, they are manufactured using high-quality steel and put through a strict quality control process to ensure you always receive a consistent premium product. If you don't see the bore size you need please contact us and we can re-bore the sprocket to the requested bore size. We also offer #40-2 roller chain, stainless #40-2 sprockets, and complete custom Made To Order sprockets. For more information, large quantity request, or re-bore sprockets please contact us and we will be happy to assist you.\u003c\/b\u003e","products":[{"product_id":"d40b21h-sprocket","title":"D40B21H Sprocket With Stock Bore","description":"\u003cb\u003e\u003cspan style=\"font-size: 16px;\"\u003eThis D40B21H sprocket is a durable, high quality, and precision double sprocket with 21 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #40-2 double roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. D40B21H sprockets with a stock bore is supplied with a standard 5\/8\" inside diameter hole with no keyway or set screws and can be easily machine bored to custom sizes. If you are needing custom bore sprockets, we have the capability of providing them within a fast lead time and at a really competitive price. For more information, or a custom sprocket quote please contact us and we will be happy to assist you.\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cbr\u003e\u003ch3\u003eD40BS21H Dimensions:\u003c\/h3\u003e\n\u003cspan style=\"font-size: 16px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40_B_DWG_ea4c5cbb-226b-4151-95ae-be820667425d.png?v=1737625553\" style=\"width: 249px;\" alt=\"D40B21H Sprocket With Stock Bore\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\n\u003cul\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eSprocket Size: D40B21H\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eTooth Count: 21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eOutside Diameter: 3.620\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Type: B\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eBore Size: 5\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eRecommended Maximum: 1-7\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Diameter: 2-3\/4\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eLength Thru Bore: 1-5\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eWeight: 2.94 LBS\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eInterchanges: D40B21, D40B21H, HD40B21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cb\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb style=\"font-size: 15px; text-align: center; box-sizing: inherit; color: rgb(6, 39, 75); font-family: Roboto, Helvetica, sans-serif;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; color: rgb(227, 108, 9); font-size: 18px;\"\u003ePhone: (407) 347-3519\u003cbr style=\"box-sizing: inherit;\"\u003e\nEmail: \u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003ca href=\"mailto:sales@usarollerchain.com\" style=\"text-decoration: none; color: rgb(6, 39, 75); font-size: 15px; outline: none 0px; text-align: center; box-sizing: inherit; font-family: Roboto, Helvetica, sans-serif; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003cb style=\"box-sizing: inherit;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003esales@usarollerchain.com\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/a\u003e","brand":"USA ROLLER CHAIN","offers":[{"title":"Default Title","offer_id":51715046211951,"sku":"D40B21H-SPROCKET","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40B21H-SPROCKET-2.jpg?v=1756368323"},{"product_id":"d40bs21h-1-716-sprocket","title":"D40BS21H Sprocket With 1-7\/16\" Finished Bore","description":"\u003cb\u003e\u003cspan style=\"font-size: 16px;\"\u003eThis D40BS21H sprocket with 1-7\/16\" finished bore is a durable, high quality, and precision double sprocket with 21 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #40-2 double roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. D40BS21H sprockets with a 1-7\/16\" finished bore are supplied with a standard key-way and two set screws. If you don't see the finished bore size you need and are needing custom bore sprockets, we have the capability of providing them within a fast lead time and at a really competitive price. For more information, or a custom sprocket quote please contact us and we will be happy to assist you.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 18px;\"\u003eDimensions:\u003c\/span\u003e\u003c\/i\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40_BS_DWG_aaa96d6b-e40f-464c-99e7-dedff5b8e5f1.png?v=1737625563\" style=\"width: 254px;\" alt='D40BS21H Sprocket With 1-7\/16\" Finished Bore'\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eSprocket Size: D40BS21H\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eTooth Count: 21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eOutside Diameter: 3.620\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Type: B\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eBore Size: 1-7\/16\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Diameter: 2-3\/4\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eLength Thru Bore: 1-5\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eWeight: 2.94 LBS\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eInterchanges: D40BS21, D40BS21H, HD40BS21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cb\u003e\u003cspan\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb style=\"font-size: 15px; text-align: center; box-sizing: inherit; color: rgb(6, 39, 75); font-family: Roboto, Helvetica, sans-serif;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; color: rgb(227, 108, 9); font-size: 18px;\"\u003ePhone: (407) 347-3519\u003cbr style=\"box-sizing: inherit;\"\u003eEmail: \u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003ca href=\"mailto:sales@usarollerchain.com\" style=\"text-decoration: none; color: rgb(6, 39, 75); font-size: 15px; outline: none 0px; text-align: center; box-sizing: inherit; font-family: Roboto, Helvetica, sans-serif; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003cb style=\"box-sizing: inherit;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003esales@usarollerchain.com\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/a\u003e","brand":"USA ROLLER CHAIN","offers":[{"title":"Default Title","offer_id":51715048636783,"sku":"D40BS21H-1-716-SPROCKET","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40BS21H-1-SPROCKET-2_3735781e-7113-485d-85fb-19f1f10070e0.jpg?v=1756368429"},{"product_id":"d40bs21h-1-12-sprocket","title":"D40BS21H Sprocket With 1-1\/2\" Finished Bore","description":"\u003cb\u003e\u003cspan style=\"font-size: 16px;\"\u003eThis D40BS21H sprocket with 1-1\/2\" finished bore is a durable, high quality, and precision double sprocket with 21 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #40-2 double roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. D40BS21H sprockets with a 1-1\/2\" finished bore are supplied with a standard key-way and two set screws. If you don't see the finished bore size you need and are needing custom bore sprockets, we have the capability of providing them within a fast lead time and at a really competitive price. For more information, or a custom sprocket quote please contact us and we will be happy to assist you.\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cbr\u003e\u003ch3\u003eD40BS21H Dimensions:\u003c\/h3\u003e\n\u003cspan style=\"font-size: 16px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40_BS_DWG_aaa96d6b-e40f-464c-99e7-dedff5b8e5f1.png?v=1737625563\" style=\"width: 254px;\" alt='D40BS21H Sprocket With 1-1\/2\" Finished Bore'\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003c\/b\u003e\n\u003cul\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eSprocket Size: D40BS21H\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eTooth Count: 21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eOutside Diameter: 3.620\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Type: B\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eBore Size: 1-1\/2\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Diameter: 2-3\/4\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eLength Thru Bore: 1-5\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eWeight: 2.94 LBS\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\t\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eInterchanges: D40BS21, D40BS21H, HD40BS21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cb\u003e\u003cspan\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb style=\"font-size: 15px; text-align: center; box-sizing: inherit; color: rgb(6, 39, 75); font-family: Roboto, Helvetica, sans-serif;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; color: rgb(227, 108, 9); font-size: 18px;\"\u003ePhone: (407) 347-3519\u003cbr style=\"box-sizing: inherit;\"\u003e\nEmail: \u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003ca href=\"mailto:sales@usarollerchain.com\" style=\"text-decoration: none; color: rgb(6, 39, 75); font-size: 15px; outline: none 0px; text-align: center; box-sizing: inherit; font-family: Roboto, Helvetica, sans-serif; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003cb style=\"box-sizing: inherit;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003esales@usarollerchain.com\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/a\u003e","brand":"USA ROLLER CHAIN","offers":[{"title":"Default Title","offer_id":51715048800623,"sku":"D40BS21H-1-12-SPROCKET","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40BS21H-1-SPROCKET-2_6baf958f-0200-4a7b-a0ac-d1b2c6dc924e.jpg?v=1756368435"},{"product_id":"d40bs21h-78-sprocket","title":"D40BS21H Sprocket With 7\/8\" Finished Bore","description":"\u003cb\u003e\u003cspan style=\"font-size: 16px;\"\u003eThis D40BS21H sprocket with 7\/8\" finished bore is a durable, high quality, and precision double sprocket with 21 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #40-2 double roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. D40BS21H sprockets with a 7\/8\" finished bore are supplied with a standard key-way and two set screws. If you don't see the finished bore size you need and are needing custom bore sprockets, we have the capability of providing them within a fast lead time and at a really competitive price. For more information, or a custom sprocket quote please contact us and we will be happy to assist you.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 18px;\"\u003eDimensions:\u003c\/span\u003e\u003c\/i\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40_BS_DWG_aaa96d6b-e40f-464c-99e7-dedff5b8e5f1.png?v=1737625563\" style=\"width: 254px;\" alt='D40BS21H Sprocket With 7\/8\" Finished Bore'\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eSprocket Size: D40BS21H\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eTooth Count: 21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eOutside Diameter: 3.620\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Type: B\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eBore Size: 7\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Diameter: 2-3\/4\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eLength Thru Bore: 1-5\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eWeight: 2.94 LBS\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eInterchanges: D40BS21, D40BS21H, HD40BS21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cb\u003e\u003cspan\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb style=\"font-size: 15px; text-align: center; box-sizing: inherit; color: rgb(6, 39, 75); font-family: Roboto, Helvetica, sans-serif;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; color: rgb(227, 108, 9); font-size: 18px;\"\u003ePhone: (407) 347-3519\u003cbr style=\"box-sizing: inherit;\"\u003eEmail: \u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003ca href=\"mailto:sales@usarollerchain.com\" style=\"text-decoration: none; color: rgb(6, 39, 75); font-size: 15px; outline: none 0px; text-align: center; box-sizing: inherit; font-family: Roboto, Helvetica, sans-serif; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003cb style=\"box-sizing: inherit;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003esales@usarollerchain.com\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/a\u003e","brand":"USA ROLLER CHAIN","offers":[{"title":"Default Title","offer_id":51715048866159,"sku":"D40BS21H-78-SPROCKET","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40BS21H-1-SPROCKET-2_56a52658-6688-4585-ac96-d2bd778c8fbf.jpg?v=1756368446"},{"product_id":"d40bs21h-1-38-sprocket","title":"D40BS21H Sprocket With 1-3\/8\" Finished Bore","description":"\u003cb\u003e\u003cspan style=\"font-size: 16px;\"\u003eThis D40BS21H sprocket with 1-3\/8\" finished bore is a durable, high quality, and precision double sprocket with 21 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #40-2 double roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. D40BS21H sprockets with a 1-3\/8\" finished bore are supplied with a standard key-way and two set screws. If you don't see the finished bore size you need and are needing custom bore sprockets, we have the capability of providing them within a fast lead time and at a really competitive price. For more information, or a custom sprocket quote please contact us and we will be happy to assist you.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 18px;\"\u003eDimensions:\u003c\/span\u003e\u003c\/i\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40_BS_DWG_aaa96d6b-e40f-464c-99e7-dedff5b8e5f1.png?v=1737625563\" style=\"width: 254px;\" alt='D40BS21H Sprocket With 1-3\/8\" Finished Bore'\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eSprocket Size: D40BS21H\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eTooth Count: 21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eOutside Diameter: 3.620\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Type: B\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eBore Size: 1-3\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Diameter: 2-3\/4\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eLength Thru Bore: 1-5\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eWeight: 2.94 LBS\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eInterchanges: D40BS21, D40BS21H, HD40BS21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cb\u003e\u003cspan\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb style=\"font-size: 15px; text-align: center; box-sizing: inherit; color: rgb(6, 39, 75); font-family: Roboto, Helvetica, sans-serif;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; color: rgb(227, 108, 9); font-size: 18px;\"\u003ePhone: (407) 347-3519\u003cbr style=\"box-sizing: inherit;\"\u003eEmail: \u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003ca href=\"mailto:sales@usarollerchain.com\" style=\"text-decoration: none; color: rgb(6, 39, 75); font-size: 15px; outline: none 0px; text-align: center; box-sizing: inherit; font-family: Roboto, Helvetica, sans-serif; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003cb style=\"box-sizing: inherit;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003esales@usarollerchain.com\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/a\u003e","brand":"USA ROLLER CHAIN","offers":[{"title":"Default Title","offer_id":51715048898927,"sku":"D40BS21H-1-38-SPROCKET","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40BS21H-1-SPROCKET-2_e1988545-39a3-4d2f-aa78-0f3967d8a5c1.jpg?v=1756368447"},{"product_id":"d40bs21h-1-316-sprocket","title":"D40BS21H Sprocket With 1-3\/16\" Finished Bore","description":"\u003cb\u003e\u003cspan style=\"font-size: 16px;\"\u003eThis D40BS21H sprocket with 1-3\/16\" finished bore is a durable, high quality, and precision double sprocket with 21 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #40-2 double roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. D40BS21H sprockets with a 1-3\/16\" finished bore are supplied with a standard key-way and two set screws. If you don't see the finished bore size you need and are needing custom bore sprockets, we have the capability of providing them within a fast lead time and at a really competitive price. For more information, or a custom sprocket quote please contact us and we will be happy to assist you.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 18px;\"\u003eDimensions:\u003c\/span\u003e\u003c\/i\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40_BS_DWG_aaa96d6b-e40f-464c-99e7-dedff5b8e5f1.png?v=1737625563\" style=\"width: 254px;\" alt='D40BS21H Sprocket With 1-3\/16\" Finished Bore'\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eSprocket Size: D40BS21H\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eTooth Count: 21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eOutside Diameter: 3.620\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Type: B\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eBore Size: 1-3\/16\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Diameter: 2-3\/4\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eLength Thru Bore: 1-5\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eWeight: 2.94 LBS\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eInterchanges: D40BS21, D40BS21H, HD40BS21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cb\u003e\u003cspan\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb style=\"font-size: 15px; text-align: center; box-sizing: inherit; color: rgb(6, 39, 75); font-family: Roboto, Helvetica, sans-serif;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; color: rgb(227, 108, 9); font-size: 18px;\"\u003ePhone: (407) 347-3519\u003cbr style=\"box-sizing: inherit;\"\u003eEmail: \u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003ca href=\"mailto:sales@usarollerchain.com\" style=\"text-decoration: none; color: rgb(6, 39, 75); font-size: 15px; outline: none 0px; text-align: center; box-sizing: inherit; font-family: Roboto, Helvetica, sans-serif; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003cb style=\"box-sizing: inherit;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003esales@usarollerchain.com\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/a\u003e","brand":"USA ROLLER CHAIN","offers":[{"title":"Default Title","offer_id":51715048931695,"sku":"D40BS21H-1-316-SPROCKET","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40BS21H-1-SPROCKET-2_7f3ab461-e7f1-4906-81e9-ae9a75dcfa57.jpg?v=1756368449"},{"product_id":"d40bs21h-1-sprocket","title":"D40BS21H Sprocket With 1\" Finished Bore","description":"\u003cb\u003e\u003cspan style=\"font-size: 16px;\"\u003eThis D40BS21H sprocket with 1\" finished bore is a durable, high quality, and precision double sprocket with 21 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #40-2 double roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. D40BS21H sprockets with a 1\" finished bore are supplied with a standard key-way and two set screws. If you don't see the finished bore size you need and are needing custom bore sprockets, we have the capability of providing them within a fast lead time and at a really competitive price. For more information, or a custom sprocket quote please contact us and we will be happy to assist you.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 18px;\"\u003eDimensions:\u003c\/span\u003e\u003c\/i\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40_BS_DWG_aaa96d6b-e40f-464c-99e7-dedff5b8e5f1.png?v=1737625563\" style=\"width: 254px;\" alt='D40BS21H Sprocket With 1\" Finished Bore'\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eSprocket Size: D40BS21H\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eTooth Count: 21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eOutside Diameter: 3.620\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Type: B\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eBore Size: 1\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Diameter: 2-3\/4\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eLength Thru Bore: 1-5\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eWeight: 2.94 LBS\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eInterchanges: D40BS21, D40BS21H, HD40BS21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cb\u003e\u003cspan\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb style=\"font-size: 15px; text-align: center; box-sizing: inherit; color: rgb(6, 39, 75); font-family: Roboto, Helvetica, sans-serif;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; color: rgb(227, 108, 9); font-size: 18px;\"\u003ePhone: (407) 347-3519\u003cbr style=\"box-sizing: inherit;\"\u003eEmail: \u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003ca href=\"mailto:sales@usarollerchain.com\" style=\"text-decoration: none; color: rgb(6, 39, 75); font-size: 15px; outline: none 0px; text-align: center; box-sizing: inherit; font-family: Roboto, Helvetica, sans-serif; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003cb style=\"box-sizing: inherit;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003esales@usarollerchain.com\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/a\u003e","brand":"USA ROLLER CHAIN","offers":[{"title":"Default Title","offer_id":51715049029999,"sku":"D40BS21H-1-SPROCKET","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40BS21H-1-SPROCKET-2.jpg?v=1756368451"},{"product_id":"d40bs21h-58-sprocket","title":"D40BS21H Sprocket With 5\/8\" Finished Bore","description":"\u003cb\u003e\u003cspan style=\"font-size: 16px;\"\u003eThis D40BS21H sprocket with 5\/8\" finished bore is a durable, high quality, and precision double sprocket with 21 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #40-2 double roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. D40BS21H sprockets with a 5\/8\" finished bore are supplied with a standard key-way and two set screws. If you don't see the finished bore size you need and are needing custom bore sprockets, we have the capability of providing them within a fast lead time and at a really competitive price. For more information, or a custom sprocket quote please contact us and we will be happy to assist you.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 18px;\"\u003eDimensions:\u003c\/span\u003e\u003c\/i\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40_BS_DWG_aaa96d6b-e40f-464c-99e7-dedff5b8e5f1.png?v=1737625563\" style=\"width: 254px;\" alt='D40BS21H Sprocket With 5\/8\" Finished Bore'\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eSprocket Size: D40BS11H\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eTooth Count: 11\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eOutside Diameter: 2.000\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Type: B\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eBore Size: 1\/2\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Diameter: 1-7\/16\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eLength Thru Bore: 1-1\/2\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eWeight: 0.62 LBS\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cb\u003e\u003cspan\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb style=\"font-size: 15px; text-align: center; box-sizing: inherit; color: rgb(6, 39, 75); font-family: Roboto, Helvetica, sans-serif;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; color: rgb(227, 108, 9); font-size: 18px;\"\u003ePhone: (407) 347-3519\u003cbr style=\"box-sizing: inherit;\"\u003eEmail: \u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003ca href=\"mailto:sales@usarollerchain.com\" style=\"text-decoration: none; color: rgb(6, 39, 75); font-size: 15px; outline: none 0px; text-align: center; box-sizing: inherit; font-family: Roboto, Helvetica, sans-serif; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003cb style=\"box-sizing: inherit;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003esales@usarollerchain.com\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/a\u003e","brand":"USA ROLLER CHAIN","offers":[{"title":"Default Title","offer_id":51715049193839,"sku":"D40BS21H-58-SPROCKET","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40BS21H-1-SPROCKET-2_0beb420a-ea69-43f0-9c12-c1c34ec30282.jpg?v=1756368457"},{"product_id":"d40bs21h-1-18-sprocket","title":"D40BS21H Sprocket With 1-1\/8\" Finished Bore","description":"\u003cb\u003e\u003cspan style=\"font-size: 16px;\"\u003eThis D40BS21H sprocket with 1-1\/8\" finished bore is a durable, high quality, and precision double sprocket with 21 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #40-2 double roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. D40BS21H sprockets with a 1-1\/8\" finished bore are supplied with a standard key-way and two set screws. If you don't see the finished bore size you need and are needing custom bore sprockets, we have the capability of providing them within a fast lead time and at a really competitive price. For more information, or a custom sprocket quote please contact us and we will be happy to assist you.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 18px;\"\u003eDimensions:\u003c\/span\u003e\u003c\/i\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40_BS_DWG_aaa96d6b-e40f-464c-99e7-dedff5b8e5f1.png?v=1737625563\" style=\"width: 254px;\" alt='D40BS21H Sprocket With 1-1\/8\" Finished Bore'\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eSprocket Size: D40BS21H\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eTooth Count: 21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eOutside Diameter: 3.620\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Type: B\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eBore Size: 1-1\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Diameter: 2-3\/4\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eLength Thru Bore: 1-5\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eWeight: 2.94 LBS\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eInterchanges: D40BS21, D40BS21H, HD40BS21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cb\u003e\u003cspan\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb style=\"font-size: 15px; text-align: center; box-sizing: inherit; color: rgb(6, 39, 75); font-family: Roboto, Helvetica, sans-serif;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; color: rgb(227, 108, 9); font-size: 18px;\"\u003ePhone: (407) 347-3519\u003cbr style=\"box-sizing: inherit;\"\u003eEmail: \u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003ca href=\"mailto:sales@usarollerchain.com\" style=\"text-decoration: none; color: rgb(6, 39, 75); font-size: 15px; outline: none 0px; text-align: center; box-sizing: inherit; font-family: Roboto, Helvetica, sans-serif; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003cb style=\"box-sizing: inherit;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003esales@usarollerchain.com\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/a\u003e","brand":"USA ROLLER CHAIN","offers":[{"title":"Default Title","offer_id":51715049259375,"sku":"D40BS21H-1-18-SPROCKET","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40BS21H-1-SPROCKET-2_e856d6db-13af-4763-a61c-44882c48e1cb.jpg?v=1756368459"},{"product_id":"d40bs21h-34-sprocket","title":"D40BS21H Sprocket With 3\/4\" Finished Bore","description":"\u003cb\u003e\u003cspan style=\"font-size: 16px;\"\u003eThis D40BS21H sprocket with 3\/4\" finished bore is a durable, high quality, and precision double sprocket with 21 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #40-2 double roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. D40BS21H sprockets with a 3\/4\" finished bore are supplied with a standard key-way and two set screws. If you don't see the finished bore size you need and are needing custom bore sprockets, we have the capability of providing them within a fast lead time and at a really competitive price. For more information, or a custom sprocket quote please contact us and we will be happy to assist you.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 18px;\"\u003eDimensions:\u003c\/span\u003e\u003c\/i\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40_BS_DWG_aaa96d6b-e40f-464c-99e7-dedff5b8e5f1.png?v=1737625563\" style=\"width: 254px;\" alt='D40BS21H Sprocket With 3\/4\" Finished Bore'\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cul\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eSprocket Size: D40BS21H\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eTooth Count: 21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eOutside Diameter: 3.620\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Type: B\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eBore Size: 3\/4\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eHub Diameter: 2-3\/4\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eLength Thru Bore: 1-5\/8\"\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eWeight: 2.94 LBS\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003ci\u003e\u003cspan style=\"color: rgb(192, 80, 77); font-size: 16px;\"\u003eInterchanges: D40BS21, D40BS21H, HD40BS21\u003c\/span\u003e\u003c\/i\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cb\u003e\u003cspan\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb style=\"font-size: 15px; text-align: center; box-sizing: inherit; color: rgb(6, 39, 75); font-family: Roboto, Helvetica, sans-serif;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; color: rgb(227, 108, 9); font-size: 18px;\"\u003ePhone: (407) 347-3519\u003cbr style=\"box-sizing: inherit;\"\u003eEmail: \u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003ca href=\"mailto:sales@usarollerchain.com\" style=\"text-decoration: none; color: rgb(6, 39, 75); font-size: 15px; outline: none 0px; text-align: center; box-sizing: inherit; font-family: Roboto, Helvetica, sans-serif; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003cb style=\"box-sizing: inherit;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit;\"\u003e\u003cinline style=\"box-sizing: inherit; font-size: 18px;\"\u003esales@usarollerchain.com\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/inline\u003e\u003c\/inline\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/a\u003e","brand":"USA ROLLER CHAIN","offers":[{"title":"Default Title","offer_id":51715049390447,"sku":"D40BS21H-34-SPROCKET","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0187\/7925\/files\/D40BS21H-1-SPROCKET-2_7f2f6af7-ef61-4fde-ad26-6fe77fa2d714.jpg?v=1756368464"}],"url":"https:\/\/usarollerchain.com\/collections\/d40b21-sprockets-ansi-d40b21-sprocket-s-4180.oembed","provider":"USA ROLLER CHAIN","version":"1.0","type":"link"}