{"product_id":"638-open-ball-bearing-8x28x9mm","title":"638 Open Miniature Ball Bearing 8x28x9mm Chrome Steel Deep Groove Bearing for small motors, hobby gearboxes and light industrial equipment needing smooth rotation and reliable pre greased performance","description":"\u003cp\u003e638 Open Miniature Ball Bearing 8mm x 28mm x 9mm\u003cbr\u003e✔️ 638 Deep Groove Open Ball Bearing 8x28x9mm\u003c\/p\u003e\n\u003cp\u003eThis miniature deep groove ball bearing is used in small motors, rollers, and compact mechanical assemblies where low friction and free spinning are needed. It is handy for light duty applications that benefit from an open design and factory grease lubrication.\u003c\/p\u003e\n\u003cp\u003e✅ Pack size: 1 bearing\u003cbr\u003e✅ Bearing type: deep groove ball bearing\u003cbr\u003e✅ Inside diameter: 8mm\u003cbr\u003e✅ Outside diameter: 28mm\u003cbr\u003e✅ Width: 9mm\u003cbr\u003e✅ Material: 52100 chrome steel\u003cbr\u003e✅ Closures: open design\u003cbr\u003e✅ Lubrication: pre greased\u003cbr\u003e✅ Dynamic load rating: 600 N\u003cbr\u003e✅ Static load rating: 265 N\u003cbr\u003e✅ Limiting speed with grease: 24000 RPM\u003c\/p\u003e\n\u003cp\u003e💡 Why use an open miniature deep groove ball bearing in compact rotating systems?\u003cbr\u003eOpen bearings are chosen when low drag and easy relubrication are more important than contamination sealing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eOpen raceway allows smooth rotation with minimal friction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGreased design supports steady operation at moderate speeds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eChrome steel construction improves wear resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompact size fits tight housings in small mechanical builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA solid option for light duty motion setups that need smooth rolling and simple maintenance in tight spaces.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":43552259440875,"sku":"638-1","price":7.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/miniature-ball-bearing-638-open-8x28x9mm-side-view.jpg?v=1773299211","url":"https:\/\/vxb.com\/products\/638-open-ball-bearing-8x28x9mm","provider":"VXB Bearings","version":"1.0","type":"link"}