{"title":"Outer Diameter - 4 1\/2 inch (4.5\")","description":"\u003ch1\u003e4.5 Inch\u003c\/h1\u003e\u003ch2\u003e4.5 Inch Online shopping\u003c\/h2\u003e","products":[{"product_id":"slim-thin-section-ball-bearing-4x-4-1-2x-1-4inch-v","title":"Slim Thin Section Ball Bearing 4\" x 4-1\/2\" x 1\/4\" VA040CP0","description":"\u003cp\u003eVA040CP0 Thin Section Ball Bearing - Open\u003cbr\u003e✔️ 4\" x 4.5\" x 0.25\" Chrome Steel with Bronze Cage\u003c\/p\u003e\n\u003cp\u003eThe VA040CP0 is a slim-profile radial ball bearing with a 1\/4\" cross section and bronze cage - engineered for precise movement where space and weight savings are essential.\u003c\/p\u003e\n\u003cp\u003e✅ Item: VA040CP0\u003cbr\u003e✅ Type: Thin Section Deep Groove Ball Bearing\u003cbr\u003e✅ Size: 4\" ID x 4.5\" OD x 0.25\" Width\u003cbr\u003e✅ Cross Section: 1\/4\" Inch\u003cbr\u003e✅ Material: Chrome Steel\u003cbr\u003e✅ Cage: Bronze Retainer\u003cbr\u003e✅ Closure: Open (No Seals)\u003cbr\u003e✅ Lubrication: Oil Preserved\u003cbr\u003e✅ Dynamic Load Rating: 2286 N\u003cbr\u003e✅ Static Load Rating: 6658 N\u003cbr\u003e✅ Quantity: 1 Bearing\u003cbr\u003e✅ Brand: VXB\u003cbr\u003e✅ Equivalents: KA040CP0, SA040CP0, KA040CPO, SA040CPO\u003c\/p\u003e\n\u003cp\u003e💡 Why use the VA040CP0 in space-limited assemblies?\u003cbr\u003eIts open, slim design reduces bulk without sacrificing performance - perfect for robotics joints, rotary actuators, and aerospace positioning systems.\u003c\/p\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":43546972782827,"sku":"Kit12126","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/thin-section-ball-bearing-4x4-5x0-25-chrome-steel-bronze-cage-front-view.jpg?v=1770442422"},{"product_id":"ka040cp0-thin-section-bearing-bore-id-dia-4-o","title":"Thin Section Ball Bearing KA040CP0 With 4 Inch Bore, Four Inch And A Half Outer Diameter, One Quarter Inch Width Slim Cross Section Precision Bearing For High Load Machinery, Ideal For Automotive And Industrial Applications","description":"\u003cdiv\u003eSlim 4in Bore Thin Section Ball Bearing, 4.5in OD\u003cbr\u003e\n✔️ Bore 4 in, OD 4.5 in, 0.25 in width, cross section 1\/4 in, brass cage \u003cp\u003eThis thin section ball bearing is designed for tight spaces where a compact, high-capacity bearing is needed. It’s ideal in precision machinery, automated equipment, and compact robotics where a slim footprint helps preserve space and shaft alignment.\u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"4\" cellspacing=\"0\" style=\"border-collapse: collapse; width: 320px;\"\u003e \u003cthead\u003e \u003ctr\u003e\n\u003cth\u003eDimension\u003c\/th\u003e\n\u003cth\u003eInches\u003c\/th\u003e\n\u003cth\u003eMillimeters\u003c\/th\u003e\n\u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e\n\u003ctd\u003eBore (ID)\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003ctd\u003e101.6 mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eOuter Diameter (OD)\u003c\/td\u003e\n\u003ctd\u003e4.5 in\u003c\/td\u003e\n\u003ctd\u003e114.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e0.25 in\u003c\/td\u003e\n\u003ctd\u003e6.35 mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003c\/tbody\u003e\n\u003c\/table\u003e \u003cp\u003e✅ Inner Diameter: 4 in (101.6 mm)\u003cbr\u003e✅ Outer Diameter: 4.5 in (114.3 mm)\u003cbr\u003e✅ Width \/ Cross Section: 0.25 in (6.35 mm)\u003cbr\u003e✅ Cage: Brass; Enclosure: Open\u003cbr\u003e✅ Dynamic Load: 2.286 kN; Static Load: 6.658 kN\u003cbr\u003e✅ Model: KA040CP0 Thin Slim Section Ball Bearing\u003c\/p\u003e \u003cp\u003e💡 What is a thin section ball bearing used for in compact equipment?\u003c\/p\u003e\n\u003cp\u003eThese handy bearings fit slim spaces and help control shaft motion with minimal footprint.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003elow-profile support for compact automation and robotics\u003c\/li\u003e \u003cli\u003eprecision shaft alignment in tight housings and linear guides\u003c\/li\u003e \u003cli\u003eopen brass cage facilitates lubrication and maintenance\u003c\/li\u003e \u003cli\u003egreat fit for slim pulley and slide modules\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":43550391402731,"sku":"KA040CP0","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/thin-section-bearing-ka040cp0-front-view.jpg?v=1770442565"},{"product_id":"full-ceramic-thin-section-4-x-4-1-2-x-1-4-inch-zro","title":"Full Ceramic Thin Section Bearing 4\" x 4-1\/2\" x 1\/4\" KA040CP0","description":"\u003cp\u003eFull Ceramic Thin Section Ball Bearing\u003cbr\u003e✔️ 4\" x 4.5\" x 0.25\" - Open Style - PEEK Cage - Dry Lube\u003c\/p\u003e\n\u003cp\u003eThe FCVA040CP0 is a full ceramic thin section deep groove ball bearing with a 1\/4-inch cross section, designed for high-precision performance in lightweight, compact spaces. With a dry-lubed open design and PEEK cage, it’s ideal for clean environments like robotics, automation, or aerospace systems. One bearing per order.\u003c\/p\u003e\n\u003cp\u003e✅ Pack size: 1 bearing\u003cbr\u003e✅ Type: Thin section deep groove ball bearing\u003cbr\u003e✅ Dimensions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eInner diameter: 4\"\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOuter diameter: 4.5\"\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWidth: 0.25\" (1\/4\")\u003cbr\u003e✅ Material: Full ceramic (ZrO₂ based)\u003cbr\u003e✅ Cage: PEEK (polyether ether ketone)\u003cbr\u003e✅ Closure: Open (no seals or shields)\u003cbr\u003e✅ Lubrication: Dry\u003cbr\u003e✅ Cross-section: Constant 1\/4\"\u003cbr\u003e✅ Best for: Low friction, low weight, and non-magnetic setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e💡 Why use full ceramic thin section bearings in advanced equipment?\u003cbr\u003eThin section ceramic bearings combine minimal weight with precision and resilience.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSave space and reduce weight in compact assemblies\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWithstand high temperatures and aggressive environments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNon-conductive and non-magnetic for sensitive systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCommon in robotics, aerospace joints, and cleanroom equipment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you’re building something high-tech and low-profile, this bearing’s the secret sauce, grab one now and keep your build light, clean, and running smooth!\u003c\/p\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":43550914478315,"sku":"Kit237627","price":1080.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/full-ceramic-thin-section-4-x-4-12-x-14-inch-zro2-vxb-ball-bearings-1.jpg?v=1770442569"},{"product_id":"csca040-thin-section-open-bearing-4x4-1-2x1-4-inch","title":"CSCA040 Thin Section Bearing 4\" x 4.5\" x 0.25\" inch","description":"\u003cp\u003eCSCA040 Thin Section Ball Bearing - Open\u003cbr\u003e4\" x 4.5\" x 0.25\" Chrome Steel with Bronze Cage\u003c\/p\u003e\n\u003cp\u003eThe CSCA040 is a high-precision thin section radial bearing with an open design and bronze cage - ideal for compact, weight-sensitive applications requiring smooth motion and strength.\u003c\/p\u003e\n\u003cp\u003e✅ Item: CSCA040\u003cbr\u003e✅ Type: Thin Section Deep Groove Radial Ball Bearing\u003cbr\u003e✅ Size: 4\" ID x 4.5\" OD x 0.25\" Width\u003cbr\u003e✅ Cross Section: 1\/4\" Inch\u003cbr\u003e✅ Closure: Open (No Seals)\u003cbr\u003e✅ Material: Chrome Steel\u003cbr\u003e✅ Cage: Bronze Retainer\u003cbr\u003e✅ Lubrication: Oil Preserved\u003cbr\u003e✅ Dynamic Load Rating: 2286 N\u003cbr\u003e✅ Static Load Rating: 6658 N\u003cbr\u003e✅ Quantity: 1 Bearing\u003cbr\u003e✅ Brand: VXB\u003c\/p\u003e\n\u003cp\u003e💡 Why use a thin section bearing like the CSCA040?\u003cbr\u003eIts slim profile reduces weight and saves space - perfect for tight-tolerance systems in aerospace, robotics, or precision automation.\u003c\/p\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":43552497533163,"sku":"CSCA040","price":138.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/csca040-thin-section-open-bearing-4x4-12x14-inch-vxb-ball-bearings-1.jpg?v=1770442593"},{"product_id":"bk45-1-2-inch-bore-solid-pulley-with-4-5-od-f","title":"Single Groove Solid Pulley For V Belts, 4.25 Inch Outer Diameter, 1\/2 Inch Bore, Cast Iron Construction, Compatible With 3L, 4L And 5L Belt Sections, Includes Hex Set Screws For Secure Mounting On A 1\/2 Inch Shaft","description":"\u003cdiv\u003eDurable BK45 V-belt pulley with 1\/2\" bore and 4.25\" OD\u003cbr\u003e\n✔️ Cast iron construction, 1 groove, fits 3L to 5L belts, 1\/2\" bore, 4.25\" outer diameter, includes hex set screws for secure setup \u003cp\u003eThis is a single solid pulley designed for efficient power transmission in machinery, commonly found in industrial equipment, automotive systems, and DIY projects where reliable belt drive is needed.\u003c\/p\u003e ✅ 1 groove for standard V-belts\u003cbr\u003e\n✅ 1\/2 inch bore size\u003cbr\u003e\n✅ 4.25 inch outer diameter\u003cbr\u003e\n✅ Compatible with 3L, 4L, and 5L belt sections\u003cbr\u003e\n✅ Made from cast iron with hex set screws for easy installation\u003cbr\u003e \u003cp\u003e💡 How does a solid pulley improve mechanical drive systems in everyday applications?\u003cbr\u003e\nA solid pulley plays a key role in boosting power transfer in machines.\u003cbr\u003e\n- Reduces slippage for smoother operation in belts\u003cbr\u003e\n- Handles higher loads without bending in tough setups\u003cbr\u003e\n- Boosts durability in workshops and factories\u003cbr\u003e\n- Keeps costs down by lasting longer than flimsy options\u003c\/p\u003e\n\u003c\/div\u003e","brand":"RBO","offers":[{"title":"Default Title","offer_id":43583018631403,"sku":"RBO-BK45-1-2-Pulley","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/bk45-12-inch-bore-solid-pulley-with-4-5-od-for-v-belts-cast-iron-size-4l-5l-vxb-ball-bearings-32681044213995.jpg?v=1770446757"},{"product_id":"2bk45h-cast-iron-bushed-sheave-pulley-for-dua","title":"Cast Iron Bushed Sheave Pulley For Dual V Belt Drive, 4.5 Inch Outside Diameter, Two Grooves, 5L B Section, Bore 1.156 Inches, Belt Top Width 5\/8 Inch, High Precision Double Groove Pulley For 4.5 Inch V Belt Systems","description":"\u003cdiv\u003e2BK45H Cast Iron Bushed Pulley for V-Belt Drives\u003cbr\u003e\n✔️ 4.5 in OD, 2 grooves, B\/5L belt, bore 1.1563 in\n \u003cp\u003eThis cast iron bushed pulley is designed for V-belt drive systems and works with inch and metric shafts. It handles common belt series such as 5L, B, and BX and is built as a single-pulley pack for straightforward replacements in industrial machines.\u003c\/p\u003e \u003cp\u003e✅ Outside diameter: 4.5 in (114.3 mm), two grooves\u003cbr\u003e\n✅ Belt compatibility: 5L, B, BX belts\u003cbr\u003e\n✅ Through bore: 1.1563 in (29.36 mm)\u003cbr\u003e\n✅ Cast iron construction with precise machining and static balance\u003cbr\u003e\n\u003c\/p\u003e \u003cp\u003e💡 What is a cast iron bushed pulley used for in V belt drive systems? Here's a quick handy summary. - Durable cast iron body resists wear in belt-driven equipment. - Fits inch and metric shafts with an accurate through bore. - Two-groove design lets you run dual belts for compact setups.\n\u003c\/p\u003e \u003c\/div\u003e","brand":"RBO","offers":[{"title":"Default Title","offer_id":43583555043563,"sku":"RBO-2BK45H-PULLEY","price":88.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/2bk45h-cast-iron-bushed-sheave-pulley-for-dual-belt-v-belt-size-5l-b-od-4-5-double-grooves-pulley-2bk45h-vxb-ball-bearings-32681296199915.jpg?v=1770447038"},{"product_id":"bk45-1-sheave-cast-iron-solid-pulley-with-od-4-5-i","title":"1 Inch Bore Cast Iron Sheave Pulley for B Class and 5L V Belts Four And Quarter Inch Outer Diameter Solid Static Balanced Drive Pulley With 1 Inch Bore For Reliable Power Transmission In Machinery","description":"\u003cdiv\u003eCast Iron Sheave for 4.25 in OD and 1 in Bore pulley\u003cbr\u003e\n✔️ OD 4.25 in, bore 1 in, belt B\/5L, 1 groove, key 3\/16x3\/32, single pulley \u003cp\u003e This sturdy cast iron pulley is designed for belt-driven machines using B-class or 5L V-belts. It is ideal for shop equipment, motors, compressors, and general drive setups where solid, reliable power transmission is needed. \u003c\/p\u003e ✅ Outside diameter: 4.25 in\u003cbr\u003e\n✅ Bore: 1 in\u003cbr\u003e\n✅ Belt section: B class \/ 5L (also runs 4L and A belts)\u003cbr\u003e\n✅ Keyway: 3\/16 x 3\/32\u003cbr\u003e\n✅ Grooves: 1\u003cbr\u003e\n✅ Material: cast iron\u003cbr\u003e\n✅ Model: BK451\u003cbr\u003e\n✅ Pack size: 1 pulley\u003cbr\u003e \u003ctable border=\"1\" style=\"border-collapse: collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eOutside Diameter\u003c\/th\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003cth\u003eBelt Section\u003c\/th\u003e\n\u003cth\u003eGrooves\u003c\/th\u003e\n\u003cth\u003eKeyway\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003e4.25 in\u003c\/td\u003e\n\u003ctd\u003e1 in\u003c\/td\u003e\n\u003ctd\u003eB \/ 5L\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e3\/16 x 3\/32\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e \u003cp\u003e💡 What is a cast iron V belt pulley used for in belt drive systems?\u003c\/p\u003e\n\u003cp\u003eIn basic terms, it serves to transfer torque from a drive motor to a driven component while keeping the belt aligned for smooth operation.\u003c\/p\u003e\n- Power transmission in belt driven motors\u003cbr\u003e\n- Compatibility with B class and 5L belts\u003cbr\u003e\n- Reduces belt slip and vibration during load changes\u003cbr\u003e\n- Durable cast iron construction for longevity\u003cbr\u003e\n\u003c\/div\u003e","brand":"RBO","offers":[{"title":"Default Title","offer_id":43839715901675,"sku":"RBO-BK45-1-Pulley","price":70.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/bk45-1-sheave-cast-iron-solid-pulley-with-od-4-5-inch-for-v-belt-size-b-class-5l-bk451-vxb-ball-bearings.jpg?v=1770447140"},{"product_id":"bk45-3-4-id-3-4-bore-cast-iron-solid-pulley-w","title":"One Groove Cast Iron Pulley With 0.75 Inch Bore And 4.25 Inch Outer Diameter For V Belts 4L And 5L, Solid Machined Pulley With Finished Bore, Standard Keyseat, And Static Balancing For Smooth Performance","description":"\u003cdiv\u003eSingle 4.25 in cast iron pulley, 3\/4 in bore\u003cbr\u003e\n✔️ Pack: 1 piece, fits 4L\/5L belts, single groove \u003cp\u003eThis is a single-groove cast iron pulley designed for belt drives using V-belts in 4L or 5L sizes. It is commonly used on small machines, woodworking tools, and light conveyors where a reliable, rigid drive is needed.\u003c\/p\u003e ✅ Outside diameter: 4.25 in (108 mm) \u003cbr\u003e\n✅ Bore: 0.75 in (19.05 mm) \u003cbr\u003e\n✅ Material: cast iron, precision machined, statically balanced \u003cbr\u003e\n✅ Belt compatibility: 4L, A, 5L, B belts; one groove \u003cbr\u003e \u003cp\u003e💡 What is a belt pulley used for in compact belt-drive systems?\u003cbr\u003eIn practical terms, a belt pulley transfers rotation from the driver to the driven shaft and helps maintain belt tension and alignment in compact setups.\u003cbr\u003e- transfers torque efficiently in narrow belt drives\u003cbr\u003e- cast iron provides rigidity and long life\u003cbr\u003e- single groove supports common belt types such as 4L\/5L\u003c\/p\u003e\n\u003c\/div\u003e","brand":"RBO","offers":[{"title":"Default Title","offer_id":43839734415595,"sku":"RBO-BK45-3-4-Pulley","price":70.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/bk45-34-id-34-0-625-bore-cast-iron-solid-pulley-with-4-5-inch-od-for-v-belts-size-4l-5l-bk4534-vxb-ball-bearings.jpg?v=1770447141"},{"product_id":"2bk45-1-cast-iron-solid-sheave-pulley-for-dua","title":"Cast Iron Dual V Belt Sheave Pulley with 1 Inch Bore 4.5 Inch Outside Diameter 5L Belt Size Dual Grooves for B Section V Belts Through Bore 1 Inch Heavy Duty Pulley With 2 Grooves Model 2BK451","description":"\u003cdiv\u003eSingle 1-inch cast-iron dual-groove pulley for 5L\/B belts\u003cbr\u003e\n✔️ 4.5 in OD (114.3 mm), ID 1 in (25.4 mm), bore 1.156 in, two grooves \u003cp\u003eThis 1-inch bore, 4.5-inch outer diameter, double-groove cast iron pulley is designed for V-belt drives using 5L and B belts. It fits both inch and metric shafts and is commonly used on conveyors, milling machines, and DIY projects.\u003c\/p\u003e ✅ Two grooves for 5L, B, BX belts\u003cbr\u003e\n✅ Outside diameter 4.5 in (114.3 mm); bore 1 in (25.4 mm); bore length 1.156 in (29.4 mm)\u003cbr\u003e\n✅ Cast iron construction with static balance for smooth operation\u003cbr\u003e\n✅ Keyway not included; belt seating remains smooth\u003cbr\u003e \u003cp\u003e💡 What is a cast iron pulley used for in belt drive systems?\u003c\/p\u003e\n\u003cp\u003ePulleys like this guide belts and transfer power in a wide range of equipment.\u003c\/p\u003e\n- handy for transmitting power in belt drives across conveyors, machines, and DIY projects\n- durable with precise alignment for smooth belt operation\n- compatible with common V-belt sizes such as 5L and B BX\u003c\/div\u003e","brand":"RBO","offers":[{"title":"Default Title","offer_id":43841923743979,"sku":"RBO-2BK45-1-PULLEY","price":88.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/2bk45-1-cast-iron-solid-sheave-pulley-for-dual-v-belt-size-5l-b-od-4-5-id-1-double-grooves-pulley-2bk451-vxb-ball-bearings-1.jpg?v=1770447141"},{"product_id":"bk47-3-4-id-3-4-bore-cast-iron-solid-pulley-w","title":"1 Groove Cast Iron Pulley With 3\/4 Inch ID Bore And 4.45 Inch Outer Diameter For V Belts 4L And 5L Premium Finished Bore Sheave With Keyseat And Static Balancing For Durable Smooth Power Transmission In Industrial Drives","description":"\u003cdiv\u003eCast Iron 3\/4 in Bore Pulley, 4.45 in OD, single\u003cbr\u003e\n✔️ 1 groove, 4L\/5L belt compatible, 4.45 in OD, 3\/4 in bore \u003cp\u003eThis solid cast iron pulley features a 3\/4 in bore and a 4.45 in outer diameter. It’s designed for V-belt drive systems using 4L and 5L belts and is a solid choice for small machines, DIY projects, and workshop setups where reliable belt routing matters.\u003c\/p\u003e \u003cp\u003e✅ Outside diameter 4.45 in (113 mm) \u003cbr\u003e✅ Bore 0.75 in (19.05 mm) \u003cbr\u003e✅ Groove: 1, for V-belt sizes 4L, A, 5L, B \u003cbr\u003e✅ Material: cast iron, statically balanced \u003cbr\u003e✅ Key features: standard keyseat and hollow head setscrews \u003cbr\u003e✅ Keyway: not included; accepts 3\/16 x 3\/32 in set screws \u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What is a popular use case for a cast iron pulley with a 3\/4 in bore in V-belt drives? Handy for compact drives and DIY projects.\u003c\/p\u003e\n- Handy for compact drives in small machines or hobby projects\u003cbr\u003e\n- Durable cast iron construction provides long life under load\u003cbr\u003e\n- Works with 4L, A, 5L, B belt sizes for easy upgrades\u003cbr\u003e\n- Mounting is straightforward with standard keyseat and hollow head screws\u003cbr\u003e\n\u003c\/div\u003e","brand":"RBO","offers":[{"title":"Default Title","offer_id":45734394200299,"sku":"RBO-BK47-3-4-Pulley","price":70.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/bk45-34-id-34-0-625-bore-cast-iron-solid-pulley-with-4-5-inch-od-for-v-belts-size-4l-5l-bk4534-vxb-ball-bearings.jpg?v=1770447141"}],"url":"https:\/\/vxb.com\/collections\/outer-diameter-4-1-2-inch-4-5.oembed","provider":"VXB Bearings","version":"1.0","type":"link"}