Pro Grade Rock Solid Linear Rail Kit SBR12 400mm Two Rails With Four SBR12UU Bearing Blocks And All Mounting Hardware For CNC Routers Mills And Lathes Easy Install Aluminum Alloy Build For DIY Automation Projects

Rigid SBR12-400 Linear Rail Kit for CNC machines
✔️ Two 400mm rails with four SBR12UU blocks and hardware

This kit delivers a complete two-rail linear guide system with 12 mm rails and 400 mm length, plus four SBR12UU bearing blocks. Ideal for CNC routers, mills, lathes, engraving machines, and other DIY automation projects, it delivers smooth movement and easy installation with pre-drilled holes.

✅ Two SBR12-400 rails (400 mm)
✅ Four SBR12UU bearing blocks
✅ 16 screws
✅ 1 handle
✅ 1 wrench
✅ Aluminum alloy rail with corrosion-resistant finish
✅ Stainless steel guide bearings for smooth travel
✅ Pre-drilled mounting holes for quick install
✅ All mounting hardware included for easy setup

💡 What is a pillow block bearing used for in a CNC linear rail setup? This handy component supports the moving carriage and keeps alignment under load. - Improves rigidity for repeatable motion - Reduces wear and misalignment in high-load applications - Compatible with 12 mm rails and standard mounting hardware - Great for CNC routers, mills, engraving machines, and DIY automation