Plastic outer spherical bearing material has a working temperature range of -60 ℃ to 100 ℃, high and smooth surface strength, and basically no tension. Its good self-lubricating performance and low friction coefficient can be applied to precision and high-speed operation while maintaining the traditional advantages of plastic bearings. POM plastic bearings are the most widely used among all plastic bearings. Generally, the inner and outer ball materials are made of POM or PA, and the cage is made of glass fiber reinforced nylon 66 (GRPA66-25). The ball bearings are made of glass, stainless steel or ceramic balls, which perform well in alkaline environments but are not suitable for operation in acidic corrosive environments.

Plastic outer spherical bearings have the following characteristics:

1. Plastic bearings are made entirely of lubricating materials and have a long service life;

2. Plastic bearings do not rust and are corrosion-resistant during use, while metal bearings are prone to rusting and cannot be used in chemical fluids;

3. Plastic bearings are lighter in weight than metal, which is more suitable for the modern trend of lightweight design;

4. The manufacturing cost of plastic bearings is lower than that of metal bearings; Plastic bearings are processed by injection molding and are more suitable for large-scale production;

5. Plastic bearings have no noise during operation and have a certain vibration absorption function;