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Which is better, ball bearing or sleeve bearing?

1. Structural difference
Ball bearing is composed of outer ring, inner ring, balls and cage, in which the balls and inner and outer rings are linked through the cage, so as to achieve the purpose of bearing loads and reducing friction. Sleeve bearings are composed of inner ring, outer ring, rollers and cage, in which the inner and outer rings are linked through the cage to bear loads and reduce friction.

2, the use of environmental differences
Ball bearings in a variety of machines, devices are widely used, but its use of the environment and working conditions have high requirements, the requirements of the working environment is dry, non-corrosive gases and try to avoid strong impact. Sleeve bearings are relatively more durable, more suitable for use in a variety of harsh environments.

3, load capacity difference
Compared with sleeve bearings, ball bearings have higher load capacity, commonly used in high-speed, high-precision machinery and equipment. Sleeve bearings are usually used for low and medium speed rotation.

4, precision difference
Ball bearings are characterized by high precision, and has a small radial play and axial clearance, it can withstand large loads, and maintain high speed. Sleeve bearings have large radial clearance due to their structural characteristics, and their accuracy is usually inferior to that of ball bearings.

5, the difference between the applicable occasions
Because the ball bearing is characterized by simple structure, strong load capacity, high precision, so it can be widely used in a variety of mechanical and electrical equipment. And sleeve bearings are suitable for those machines or equipments which are subject to small loads and do not require high precision, such as bearings used in agricultural machines, bearings used in some low-speed equipments, and so on.

In summary, ball bearings and sleeve bearings in the structure, the use of the environment, load capacity, precision and applicable occasions and other aspects of the existence of large differences, the use of the need to combine with the specific circumstances of the choice.