{"product_id":"lm4uu-linear-ball-bearings-4mm-id-8mm-od-12mm-leng","title":"LM4UU Linear Ball Bearings 4Mm ID 8Mm OD 12Mm Length With Double Seal For 3D Printers CNC Machines And Precision Equipment For DIYers And Pros High Performance Guide Bearings","description":"\u003cdiv\u003e4mm ID Linear Ball Bearing with Double Seal for CNC\u003cbr\u003e\n✔️ ID 4mm, OD 8mm, length 12mm; double-seal, dustproof \u003cp\u003eThe LM4UU linear ball bearing is a compact, precision guide bearing designed for smooth, low-friction motion on 4 mm shafts. It’s a common pick for 3D printers, CNC machines, and precision equipment, featuring a double seal to block dust and moisture and extend service life.\u003c\/p\u003e \u003cp\u003e✅ ID 4 mm, OD 8 mm, length 12 mm \u003cbr\u003e✅ Dynamic load Cr 88.2 N; Static load Cor 108 N \u003cbr\u003e✅ Made of bearing steel with high hardness and wear resistance \u003cbr\u003e✅ Four-row steel balls minimize friction for smooth motion \u003cbr\u003e✅ Double seal design blocks dust and moisture for dusty environments \u003cbr\u003e✅ Suitable for 3D printers, CNC slides, linear modules and automation\u003c\/p\u003e \u003cp\u003e💡 What is a sealed 4 mm ID linear bearing used for? It’s a handy, compact way to achieve precise, low-friction motion in small automation setups.\n- 4 mm bore fits standard 4 mm shafts\n- handy for 3D printers and CNC slides needing smooth travel\n- double seals block dust\/moisture, extending lubricant life\n- compatible with 8 mm guide rails for stable alignment\u003c\/p\u003e✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49043361726699,"sku":"VXB0FK5PN431","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/61sgvpw7foL_66b3b277-7bae-4327-8a60-7482b3361010.jpg?v=1783872065","url":"https:\/\/vxb.com\/products\/lm4uu-linear-ball-bearings-4mm-id-8mm-od-12mm-leng","provider":"VXB Bearings","version":"1.0","type":"link"}