{"product_id":"4mm-x-300mm-linear-motion-shaft-guide-in-chrome-pl","title":"4mm X 300mm Linear Motion Shaft Guide In Chrome Plated Case Hardened Steel For 3D Printers And CNC Machines Beefed Up Ultra Smooth Rails With 58 To 64 HRC Hardness","description":"\u003cdiv\u003e4mm x 300mm Chrome-Plated Linear Shaft Guide\n✔️ Chrome-plated C45 steel, 58-64 HRC, straightness under 0.1\/1000mm \u003cp\u003eThese precision motion shafts use a chrome-plated C45 steel rod to guide linear bearings, providing durable, corrosion-resistant performance in compact automation setups. Sized 4mm by 300mm, they’re common in 3D printers, CNC machines, robotics, and other automated systems where smooth, accurate movement matters.\u003c\/p\u003e \u003cp\u003e✅ 4mm diameter, 300mm length motion guide shaft\u003cbr\u003e✅ Chrome-plated surface for corrosion resistance and durability\u003cbr\u003e✅ Straightness under 0.1\/1000mm with hardness of 58-64 HRC\u003cbr\u003e✅ Compatible with linear support blocks and enclosed sliders in printers and CNC machines\u003c\/p\u003e \u003cp\u003e💡 What is a 4mm x 300mm linear motion shaft guide used for in automation setups?\u003c\/p\u003e\nThis guide shaft provides precise, smooth motion for small-axis systems.\n- used to guide linear bearings and enclose sliders in printers and CNC machines\n- made from chromium-plated carbon steel for wear resistance\n- ensures high straightness and 58-64 HRC hardness for long life\n✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49149930537195,"sku":"VXB0F32Y27R9","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/51rHI4WOBgL.jpg?v=1785835679","url":"https:\/\/vxb.com\/products\/4mm-x-300mm-linear-motion-shaft-guide-in-chrome-pl","provider":"VXB Bearings","version":"1.0","type":"link"}