{"product_id":"bk45-7-8-id-7-8-0-875-bore-cast-iron-solid-pu","title":"One Groove Solid Cast Iron Pulley With Seven Eighth Inch Bore And Four Point Two Five Inch Outer Diameter For V Belts Four L And Five L Finished Bore With Standard Keyseat And Static Balanced","description":"\u003cdiv\u003eSingle 4578 Cast Iron Pulley, 4.25in OD, 7\/8in Bore\u003cbr\u003e\n✔️ 1-piece solid pulley for 4L\/5L belts, 4.25in OD, 7\/8in bore \u003cp\u003eThe 4578 cast iron pulley is a solid V-belt pulley designed for small drive systems. It accepts 4L or 5L belts and features a precise 7\/8 inch bore and a 4.25 inch outer diameter. This type of pulley is common in hobby machines, woodworking tools, and compact conveyors where reliable belt power transmission matters.\u003c\/p\u003e \u003cp\u003e✅ Outside diameter: 4.25 in (108 mm)\u003cbr\u003e✅ Bore: 7\/8 in (22.23 mm)\u003cbr\u003e✅ Material: cast iron, statically balanced\u003cbr\u003e✅ Belt compatibility: 4L, A, 5L, B belts\u003cbr\u003e✅ Keyway: 3\/16 x 3\/32 in (4.76 x 2.38 mm); hollow head setscrews\u003c\/p\u003e \u003cp\u003e💡 What is a cast iron pulley with a 7\/8 bore used for in belt drive systems?\u003c\/p\u003e\n\u003cp\u003eHandy explanation and practical use:\u003c\/p\u003e\n- Ideal for small belt drives needing reliable power transmission\u003cbr\u003e\n- Supports standard V-belt sizes 4L and 5L\u003cbr\u003e\n- Cast iron rigidity reduces vibration and wear\u003cbr\u003e\n- Uses a 7\/8in bore with a 4.25in OD for easy shaft fit\u003cbr\u003e\n\u003c\/div\u003e","brand":"RBO","offers":[{"title":"Default Title","offer_id":43839704793323,"sku":"RBO-BK45-7-8-Pulley","price":70.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/bk45-78-id-78-0-875-bore-cast-iron-solid-pulley-with-4-5-inch-od-for-v-belts-size-4l-5l-bk4578-vxb-ball-bearings.jpg?v=1770447140","url":"https:\/\/vxb.com\/products\/bk45-7-8-id-7-8-0-875-bore-cast-iron-solid-pu","provider":"VXB Bearings","version":"1.0","type":"link"}