uxcell LM4UU Linear Ball Bearings 4mm Bore 8mm OD 12mm Length for CNC Machine 3D Printer 4pcs

Linear Motion Bearing X-Y tables, linear stages, machine slides and other advanced slides use linear motion bearings to provide movement along both X and Y multiple axis.

These bearings are designed for smooth movement with high precision, making them ideal for applications that require precise positioning and movement.

The steel ball is in point contact with the shaft and rotates with very little frictional resistance, providing a smooth and quiet operation.

Additionally, these bearings can be used to replace parts of 3D printer rail unit, common machine tool guideway components, and laser (engraving machine) rail set-up and parts replacement.

With regular cleaning and maintenance, these bearings can provide reliable performance for extended periods of time.