Bearings composed of different components (metal, plastic, solid lubrication materials) are called composite bearings, composite bearings themselves are sliding bearings, composite bearings also known as bush, bush or sleeve bearings, usually cylindrical, without moving parts.
There are significant differences between composite bearings and rolling bearings, so they cannot be used interchangeably.
1. Rolling bearings, due to their complex multi-component design, precise structure and precise installation, are often much more expensive than composite bearings.
2. Rolling bearings are more suitable for applications requiring precise shaft position and/or very low friction.
3. Composite bearings, due to their greater contact area and adaptability, can provide higher load bearing capacity and tolerance to high impact loads and concentrated end loads.
4. Composite bearings can better compensate for misalignment than partial rolling bearings to reduce the impact of concentrated end load.
5. The composite bearing adopts ultra-thin single design, which can reduce the shell size, save space and reduce weight to a great extent.
6. The composite bearing is more resistant to reciprocating motion, which can extend the bearing life.
7. The composite bearing will not be damaged by the sliding of the rolling body when running at high speed and under low load, and has excellent damping performance.
Composite bearings have no moving parts in them compared to rolling bearings, so they operate more quietly and have almost unlimited rotational speeds in properly lubricated systems.
9, the composite bearing installation is simple, only need machining shell, compared with the rolling bearing will cause almost no damage to accessories.
Compared with standard rolling bearings, non-metallic composite bearings have stronger corrosion resistance.
11. The composite bearings can run dry without the need for additional lubricant systems, lubricants and equipment downtime during maintenance.
12. The composite bearing can run dry at high temperature and in the presence of pollutants.