LM4UU Linear Ball Bearing Set With 4mm Bore 8mm OD 12mm Length Sealed Double Dust Seal Pro Grade Smooth Motion On CNC Machines And 3D Printers Pack Of 4 Kits

LM4UU 4 mm Bore Linear Ball Bearing Set, Pack of 4
✔️ 4x8x12 mm sealed double-dust LM4UU bearings for smooth CNC moves

LM4UU bearings are compact sealed linear ball bearings used on small CNC machines and 3D printers. They ride on 4 mm shafts to deliver smooth, repeatable motion in linear guides.

✅ 4 mm bore, 8 mm OD, 12 mm length
✅ sealed double dust seals resist dirt and moisture
✅ static load 108 N, dynamic load 88.2 N (80% of rated)
✅ pack of 4 units for multi-axis setups

💡 What is a sealed LM4UU linear ball bearing set used for in DIY CNC machines and 3D printers?

A handy choice for smooth, accurate motion on small axes.

- sealed double dust seals keep contaminants out
- compatible with 4 mm bore on 8 mm shafts
- ideal for mechanical slides, linear tables, and light CNC tasks✝️