{"product_id":"beefy-30mm-x-300mm-linear-motion-rod-with-case-har","title":"Beefy 30mm x 300mm Linear Motion Rod With Case Hardened Chrome Shaft For 3D Printers And DIY CNC, High Precision H8 Tolerance, Chrome Plated Rail Guide For Smooth Accurate Linear Travel","description":"\u003cdiv\u003e30x300mm Chrome-Plated Linear Rod for 1-Piece CNC\u003cbr\u003e\n✔️ 30mm dia x 300mm length, HRC55-62, Ra0.05-0.08, chrome \u003cp\u003eThis 30x300mm linear motion rod is precision manufactured from 45# carbon steel with a case-hardened chrome plating for smooth, accurate travel. It's widely used in CNC machines, 3D printers, engraving setups, and automation systems to guide moving parts with tight tolerances.\u003c\/p\u003e ✅ 45# carbon steel core with chrome plating; hardness HRC55-62; surface Ra0.05-0.08\u003cbr\u003e\n✅ Straightness ≤0.1\/1000mm; ends chamfered 1.0-45° for easy assembly\u003cbr\u003e\n✅ Diameter tolerance -0.01 to -0.03mm; length tolerance ±0.1mm\u003cbr\u003e\n✅ Chrome plating thickness ~0.01mm for wear resistance\u003cbr\u003e\n✅ 30x300mm size ideal for CNC, 3D printers, engraving machines\u003cbr\u003e \u003cp\u003e💡 What is a 30x300mm linear motion rod used for in CNC machines and 3D printers? A handy guide:\u003c\/p\u003e\n- Used to guide moving parts along precise straight paths in Cartesian systems\n- Handy for DIY CNC builds and hobby-grade 3D printers\n- Chrome-plated surface reduces wear and helps maintain tight tolerances\n- Compatible with standard bearing blocks and rail guides for reliable travel\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":48110844117227,"sku":"VXB0D231P8VB","price":88.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/513i7sXdyHL.jpg?v=1776489877","url":"https:\/\/vxb.com\/products\/beefy-30mm-x-300mm-linear-motion-rod-with-case-har","provider":"VXB Bearings","version":"1.0","type":"link"}