Beefy LM3UU Cylinder Linear Motion Ball Bearing Set 3mm ID 7mm OD 10mm Length 4 Pack SAE 52100 Carbon Steel For CNC And 3D Printer Linear Rail Guides Built For Precision Motion

LM3UU Cylinder Bearings for CNC and 3D Printers, 4 Pack
✔️ ID 3 mm (0.12 in), OD 7 mm (0.28 in), L 10 mm (0.39 in), 4 pk

LM3UU cylinder linear motion bearings are compact, high-precision bushings used to guide smooth motion on cylindrical shafts and guide rails in CNC machines and 3D printers.

✅ 3 mm ID, 7 mm OD, 10 mm length, 4 pack
✅ SAE 52100 carbon steel bearing with pre-lubrication
✅ Sealed on both sides to block contaminants and reduce wear
✅ Suitable for CNC, 3D printers, linear rails and motion modules

💡 What is a LM3UU cylinder linear bearing used for in CNC and 3D printers?

These bearings enable smooth, precise motion on guide rails and shafts.

- precise linear motion on cylindrical shafts
- fits 3 mm ID and 7 mm OD layouts for compact builds
- ideal for upgrading hobby CNC machines and 3D printers
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