The operating principle of rolling bearings is to support and transmit loads by rolling rolling balls or rollers within the bearing. Compared to sliding bearings, rolling bearings have lower friction losses. This is because the rolling contact area of rolling bearings is relatively small, with only a small portion of the balls or rollers in rolling motion, thereby reducing energy loss.
The rolling friction loss of
blower bearings mainly comes from the rolling friction generated during the rolling process of rolling balls or rollers. When the bearing is in operation, the rolling balls or rollers will roll between the rolling contact area and the shaft and bearing seat, forming a rolling track in the contact area. This rolling motion has a much lower friction coefficient compared to sliding motion.
The advantages of relatively small rolling contact areas of rolling bearings mainly include the following aspects:
Reduced energy loss: The rolling contact area is smaller, with only a small number of rolling balls or rollers in rolling contact, resulting in reduced energy loss. In contrast, sliding bearings have a larger sliding contact area and higher energy loss.
Reducing frictional heat: Friction can lead to energy loss and generate frictional heat. Due to the relatively small rolling contact area of rolling bearings, the rolling friction loss is relatively small, thereby reducing the generation of frictional heat.
Improve bearing life: Due to the small rolling contact area of rolling bearings and relatively low friction, the wear and fatigue of the bearing are reduced. This can improve the life and reliability of the bearing.
The rolling friction loss of rolling bearings does not completely disappear, and there is still a certain degree of energy loss. The specific amount of rolling friction loss depends on the design parameters, usage conditions, and lubrication conditions of the bearing.
The use of rolling bearings in blowers can reduce friction losses, improve energy efficiency performance, and extend bearing life. This is because the rolling contact area of rolling bearings is smaller, which can reduce energy loss and the generation of frictional heat. Therefore, the selection of rolling bearings in applications such as blowers is a more suitable option.
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