Rolling bearings are bearings in which the friction between the mechanically running shaft and the shaft seat is rolling friction, while plain bearings still operate under sliding friction.
The rolling bearing has a clear structure, and the evenly distributed rolling elements can effectively reduce friction. Therefore, the mechanical start-up is very fast and good, and the maintenance is relatively simple and convenient. In addition, it is more suitable for medium-speed operation. At high speeds, the noise is relatively high, and the service life is shorter. In addition, the rolling bearing vibrates a lot during operation. In comparison, the plain bearing runs smoothly and noiselessly, but the resistance during start-up is relatively large.
The friction force of the rolling bearing is related to the manufacturing process, while the friction of the sliding bearing is related to the manufacturing material.