Bearings, in fact, are in our lives, and the use of shocking. Take the car as an example, a car generally needs to use 100 to 150 bearings, if there is no bearings, the car's wheels will rattle, the transmission gear can not be toothed, the car will not be able to run. Not only cars, railway cars, airports, washing machines, household refrigerators, central air conditioners, vacuum cleaners, printers, computers, and even in the long space of the artificial Earth satellite, bearings are found. Bearings play a vital role in improving mechanical efficiency and environmental protection and energy saving. Unfortunately, because the bearing has to operate quietly in the internal structure of the machine, you have very few opportunities to directly see the true face of the bearing. But the bearing is absolutely the key part to maintain the excellent mechanical effect. The English translation of Bearing is "bearing", "Bear" has the connotation of support and bearing. In Japanese, bearings are created as "shaft receivers", mainly because bearings are used to support the rotating shaft, that is, to take the connotation of "supporting the rotating shaft".

The basic element of bearings is to "reduce the friction of machinery". Reducing friction has three major benefits:

1. Improve the efficiency of mechanical work.

2. Increase the service life of the machine.

3. Avoid biting and sticking to reduce common mechanical failures.

Bearing can reduce friction, improve motor efficiency, beneficial to environmental protection and energy saving.