Linear bearings are used in conjunction with hardened linear drive shafts. A system of infinite linear motion. Because the load ball and the hardened transmission shaft are in point contact, the allowable load is small, but when moving in a straight line, the friction resistance is the smallest, the precision is high, and the movement is fast.
There are no special requirements for the shaft of the plastic linear bearing bearing; it can bear a greater load than the metal bearing, but because the movement between the bearing and the shaft is sliding friction, the movement speed of the plastic linear bearing is limited to a certain extent; the movement resistance is lower than that of the metal linear bearing. The bearing is larger; but its motion noise is lower than that of metal linear bearings, especially in the case of medium and high speeds, and the noise of plastic linear bearings has very little influence with speed. Plastic linear bearings are allowed to be used in places with a lot of dust due to the design of chip removal grooves inside. The dust is automatically taken out of the friction surface of the bearing body from the chip removal grooves during movement; Clean, the internal sliding membrane made of special materials can even be used for long-term operation in liquids.
