Extra Long LM12UU Round Flange Linear Ball Bearing Bushing 12mm Bore, 21mm Outer Diameter, 57mm Length Sealed On Both Sides Pack Of 2 For Smooth Low Friction Linear Motion In CNC, 3D Printing, And Robotic Applications

Extra Long LM12UU Sealed Flange Bearing, 12mm Bore, Pack 2
✔️ Pack of 2; 12mm bore, 21mm outer, 57mm length, sealed

These LM12UU round flange linear bearings provide smooth, low-friction motion for CNC machines, 3D printers, robotics, and other linear guide systems. They’re sealed on both sides to keep out dust and extend bearing life.

✅ Model LM12UU, nominal shaft diameter 12 mm
✅ Outer diameter 21 mm
✅ Total length 57 mm
✅ Sealed on both sides for dust protection
✅ Chrome steel shell and bearing balls provide abrasion resistance

💡 What is a pillow block bearing used for in precision linear motion systems? This handy component keeps guides aligned and reduces friction in CNC machines, 3D printers, and robotics.
- Supports shaft alignment on guide rails
- Reduces friction and wear for smoother travel
- Seals protect against dust in tough environments