{"product_id":"4-pcs-u-groove-bearings-4x13x6mm-rail-ball-bearing","title":"4 Pcs U Groove Bearings 4x13x6mm Rail Ball Bearings Groove Guide Pulley Bearings Steel Replacement For Rail Track Linear Motion Systems In 3D Printing Projects ABEC1","description":"\u003cdiv\u003e4 Pcs U Groove Bearings 4x13x6mm for Rail Track Motion\u003cbr\u003e \u003cp\u003eThese U groove rail bearings guide linear motion along rails and are ideal for 3D printers, sliding doors, and CNC setups.\u003c\/p\u003e ✅ Size: 4x13x6 mm U Groove bearing \u003cbr\u003e\n✅ Inner diameter: 4 mm; Wheel diameter: 13 mm; Groove width: 3.5 mm \u003cbr\u003e\n✅ Material: bearing steel GCr15; Color: silver \u003cbr\u003e\n✅ Bolt size: M4; Width: 6 mm \u003cbr\u003e\n✅ Packing: 4 pcs U Groove Bearings, 4 pcs guide rail rollers, 4 pcs M4 bolts \u003cbr\u003e \u003cp\u003e💡 What is a rail U-groove bearing used for in linear motion systems? This handy piece helps guided motion along rails in a variety of setups.\u003c\/p\u003e\n- Guides moving parts with consistent alignment in linear paths.\n- Commonly used in 3D printers, sliding doors, and automation projects.\n- Made from GCr15 bearing steel for durability and rust resistance.\n- Always verify rail compatibility before mounting to avoid fit issues. ✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49147677311211,"sku":"VXB0FSJPSD1V","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/71mfqkpQ2LL.jpg?v=1785810401","url":"https:\/\/vxb.com\/products\/4-pcs-u-groove-bearings-4x13x6mm-rail-ball-bearing","provider":"VXB Bearings","version":"1.0","type":"link"}