{"product_id":"jeremywell-40-roller-chain-sprocket-21-tooth-b-hub-3-4-bore","title":"Jeremywell #40 Roller Chain Sprocket, 21 Tooth B-Hub, 3\/4\" Bore","description":"\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSprocket Size: 40B21T-3\/4, 21 teeth, 0.50” pitch, 3\/4” bore, designed for ANSI #40 roller chain. B-type sprocket, provides reliable chain engagement for industrial power-transmission systems.\u003c\/li\u003e\n\u003cli\u003eBore \u0026amp; Mounting: Features a 3\/4” finished bore, 3\/16” x 3\/32” keyway, and two set screws positioned at 90° for secure attachment to the shaft. Verify shaft diameter and keyway dimensions before ordering.\u003c\/li\u003e\n\u003cli\u003eDurable Construction: Manufactured from AISI 1045 medium-carbon steel, providing a practical balance of strength, toughness, and durability for general industrial power-transmission applications. The black oxide finish helps protect the sprocket against rust and corrosion during handling and normal operating conditions.\u003c\/li\u003e\n\u003cli\u003eDimensions: Outside diameter: 3.62”; L.T.B.: 1”. Review all dimensions against your existing sprocket and available equipment clearance.\u003c\/li\u003e\n\u003cli\u003eCompatibility \u0026amp; Package: Suitable for machinery and power-transmission systems using ANSI #40 roller chain. Package includes 1 sprocket.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFree shipping included. 30-day hassle-free returns.\u003c\/p\u003e","brand":"Belmont Warehouse","offers":[{"title":"Default Title","offer_id":43356830269649,"sku":"BW-B08DDHQZVZ","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/3123\/5793\/files\/71vS8SeGN_L._SL1500.jpg?v=1790980401","url":"https:\/\/belmontwarehouse.com\/products\/jeremywell-40-roller-chain-sprocket-21-tooth-b-hub-3-4-bore","provider":"Belmont Warehouse","version":"1.0","type":"link"}