{"title":"Ball Diameter - 21mm","description":"\u003cp\u003e\u003c\/p\u003e","products":[{"product_id":"21mm-loose-steel-balls-g10-bearing-balls","title":"21mm Loose Steel Balls G10 Bearing Balls","description":"\u003cp\u003e21mm Loose Ball Bearing - G10 Chrome Steel\u003cbr\u003e✔️ Precision-ground single ball for industrial use\u003c\/p\u003e\n\u003cp\u003eThis 21mm loose ball bearing is made from high-quality chrome steel and rated G10 for tight tolerance and roundness. It's a solid choice for repair jobs, replacements, or custom builds that require a smooth, high-strength rolling element. Pack size: 1 ball.\u003c\/p\u003e\n\u003cp\u003e✅ Diameter: 21mm\u003cbr\u003e✅ Material: Chrome steel\u003cbr\u003e✅ Precision grade: G10\u003cbr\u003e✅ Smooth surface for minimal friction\u003cbr\u003e✅ Quantity: 1 loose ball\u003c\/p\u003e\n\u003cp\u003e💡 Why are chrome steel loose ball bearings used in industrial setups?\u003cbr\u003eThey're built tough for smooth, repeatable motion in moving parts.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eStrong and wear-resistant for long-term durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eG10 tolerance gives consistent roundness and balance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCommon in heavy-duty machinery, conveyors, and press tools\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHandy for custom projects or replacements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdd this precision ball to your lineup and keep your equipment rolling with confidence!\u003c\/p\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":43579969831147,"sku":"LOOSEBALLS21MMG10","price":3.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/21mm-loose-steel-balls-g10-bearing-balls-vxb-ball-bearings-1-32680032436459.jpg?v=1771189344"},{"product_id":"10-pack-21mm-loose-steel-balls-g10-chrome-steel","title":"10-Pack 21mm Loose Steel Balls - G10 - Chrome Steel","description":"\u003cp\u003e21mm Chrome Steel Loose Balls - 10 Pack\u003cbr\u003e✔️ G10 Precision - Loose Bearings - 21mm Diameter\u003c\/p\u003e\n\u003cp\u003eThis 10-pack of 21mm loose chrome steel balls is built to meet G10 precision standards, making them ideal for industrial machinery, casters, and custom bearing assemblies. Durable, accurate, and ready for high-load use.\u003c\/p\u003e\n\u003cp\u003e✅ Diameter: 21mm\u003cbr\u003e✅ Material: Chrome Steel\u003cbr\u003e✅ Precision Grade: G10\u003cbr\u003e✅ Type: Loose Ball Bearing\u003cbr\u003e✅ Quantity: 10 Loose Balls\u003c\/p\u003e\n\u003cp\u003e💡 What does G10 mean in bearing ball precision?\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cp\u003eG10 indicates a high level of roundness and surface finish for consistent performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIt's suitable for applications needing minimal vibration and smooth motion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCommonly used in precision instruments, ball bearings, and rolling elements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eGreat for building or repairing components that require tight tolerance and reliable performance.\u003c\/p\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":43579971338475,"sku":"LOOSEBALLS21MMG10-10","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/21mm-loose-steel-balls-g10-bearing-balls-pack-of-10-balls-vxb-ball-bearings-1-32680032764139.jpg?v=1771189343"},{"product_id":"5mm-bore-bearing-with-21mm-round-nylon-pulley","title":"5mm Bore Bearing With 21mm Round Nylon Pulley U-Groove Track Roller Bearing 5x21x6mm White Nylon Pulley For Smooth Linear Motion In Sliding Guides And Conveyors Ideal For Linear Guides Printers And Lightweight Conveying Tasks","description":"\u003cdiv\u003e5mm Bore Nylon Pulley with 21mm U Groove Track\u003cbr\u003e\n✔️ 5x21x6mm round nylon pulley, U-groove, white, 1 pc \u003cp\u003eThis compact nylon pulley with a 5mm bore fits 5mm shafts and features a U-shaped groove to guide belts in tight spaces. Commonly used in 3D printers, hobby CNC setups, and small robotics, it pairs with small linear motion systems to reduce belt slip and noise while keeping components lightweight.\u003c\/p\u003e ✅ 5mm bore for 5 mm shaft compatibility \u003cbr\u003e\n✅ Outer diameter 21 mm; width 6 mm \u003cbr\u003e\n✅ Material: white nylon pulley with U-groove belt track \u003cbr\u003e\n✅ Bearing: steel ball bearing in hub \u003cbr\u003e\n✅ Belt groove: U-groove for secure belt seating \u003cbr\u003e\n✅ Pack size: 1 piece \u003cbr\u003e \u003cp\u003e💡 What is a 5mm bore nylon pulley with a U groove used for in small belt drive systems?\u003c\/p\u003e\nThis handy component keeps belts aligned and motion smooth in compact setups.\n- Ideal for 3D printers, small CNC rigs, and robotics\n- Fits 5 mm shafts with a steel ball bearing for durability\n- U-groove belt guide minimizes slip and tracking issues \u003c\/div\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":43581853401323,"sku":"UGroove-Pulley5x21x6-Bearing","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/5mm-bore-bearing-with-21mm-round-nylon-pulley-u-groove-track-roller-bearing-5x21x6mm-vxb-ball-bearings-1-32680599453931.jpg?v=1770446254"}],"url":"https:\/\/vxbtools.com\/collections\/ball-diameter-21mm.oembed","provider":"VXB Bearings","version":"1.0","type":"link"}