LM20LUU Linear Bearings 20*32*42mm

Because the bearing ball is in contact with the bearing point, the load is small. The steel ball rotates with very little friction resistance, thus achieving smooth motion with high precision.

Plastic linear bearing is a self-lubricating linear motion system, the biggest difference with metal linear bearing is that metal linear bearing is rolling friction, the point contact between the bearing and the cylindrical shaft, so this is suitable for low load high-speed movement; The plastic linear bearing is sliding friction, and the bearing and cylindrical shaft are in surface contact, so this is suitable for high load and low speed movement.

Maintenance of metal linear bearings: lubrication and friction: linear bearings inside the injection of anti-corrosion oil, if grease lubrication, first use kerosene or organic solution to remove the anti-corrosion oil, air dry and then add grease. (Lithium soap grease labeled N0.2 is recommended.) When lubricating with oil, it is not necessary to remove the anti-corrosion oil, and the ISO viscosity grade VG15-100 oil can be selected according to the temperature change. Shaft lubrication can feed oil from the supply line, or from the oil hole on the external bearing housing. Because the sealing ring will scrape the lubricating oil, oil lubrication is not suitable for non-porous bearings with sealing rings.