{"product_id":"sfu1204-400mm-rolled-ballscrew-ballnut-with-low-ba","title":"SFU1204 400mm Rolled Ballscrew Ballnut With Low Backlash For Smooth Precise Linear Actuation Without End Supports Ideal For DIY CNC Rigs 3D Printing And Automated Motion Projects","description":"\u003cdiv\u003e400mm rolled ballscrew ballnut with low backlash precision\u003cbr\u003e\n✔️ Total length 400mm, screw diameter 12mm, pitch 4mm, weight ~367g \u003cp\u003eThe 400mm SFU1204 rolled ballscrew ballnut delivers low friction, high-precision linear motion for DIY CNC rigs, 3D printers, and automated motion projects. It is designed for use without end supports and pairs with a 12mm screw diameter and 4mm pitch.\u003c\/p\u003e \u003cp\u003e✅ Total length: 400mm\u003cbr\u003e✅ Screw diameter: 12mm\u003cbr\u003e✅ Screw pitch: 4mm\u003cbr\u003e✅ Weight: ~367g\u003cbr\u003e✅ Color: Silver\u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What is a rolled ballscrew ballnut and why does low backlash matter for precise linear motion in CNC and 3D printing?\u003c\/p\u003e\n\u003cp\u003eHere's a quick breakdown:\u003c\/p\u003e\n* Low backlash minimizes stick-slip and improves repeatable positioning\n* Rolled ball mechanism provides high transmission efficiency and smoother motion\n* 12mm screw diameter and 4mm pitch align with common DIY CNC and 3D printer builds\n✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49130542924011,"sku":"VXB0H2CYP9TT","price":77.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/51p31DTxETL_0fb7fada-c005-4d21-8ca0-ed391aa41c31.jpg?v=1785491184","url":"https:\/\/vxb.com\/products\/sfu1204-400mm-rolled-ballscrew-ballnut-with-low-ba","provider":"VXB Bearings","version":"1.0","type":"link"}