LM12UU Four Pack Linear Bearings For Smooth Precise Motion On 12mm Shafts With 21mm Outer Diameter And 30mm Length Sealed Bearing Steel Ideal For 3D Printers CNC Slides And Precision Equipment Delivering Low Friction And High Load

LM12UU Four-Pack Linear Bearings for Smooth Motion
✔️ ID 12mm (0.472 in)/OD 21mm (0.827 in), L 30mm (1.181 in)

LM12UU four-pack linear bearings deliver precise, low-friction motion on 12 mm shafts. They’re ideal for 3D printers, CNC slides, and other precision equipment needing reliable straight-line movement.

✅ 12 mm ID (0.472 in) / 21 mm OD (0.827 in) / 30 mm length (1.181 in)
✅ Four-rows steel balls minimize friction for smooth movement
✅ Double seal design blocks dust and moisture to extend life
✅ High-quality bearing steel provides wear and impact resistance
✅ Pack of four for multiple axes or parallel setups
✅ Compatible with 12 mm shafts and standard guide rails

💡 What is a linear bearing used for in precision motion systems?

In simple terms, it guides a shaft or rail with minimal resistance for accurate, repeatable movement. - smooth, low-friction linear motion along 12 mm shafts - precise alignment reduces wear and improves repeatability - compatible with standard 12 mm shafts and guide rails