Classification of ball bearings
Ball bearings use widely in transmission systems, and their advantages are low friction resistance, high limit speed and low price. There are four common ball bearings:
- Deep groove ball bearings
Features: mainly bear radial load, the most widely used. Application: deep groove ball bearings can mainly bear radial load, but can also run well when bearing radial and axial compound load. Its friction coefficient is small, but also suitable for high speed working conditions. Simple structure, easy to achieve high accuracy, so can be mass production.
- Cylindrical Roller Bearing
Features: high axial load carrying capacity. Application: Angular contact ball bearings have the advantages of high speed, high precision, low noise and vibration, etc. They mainly use in situations where the axial force is higher than that of deep groove ball bearings.
- Ball bearings
Features: With heart function.
Application: Self-aligning ball bearings are suitable for situations where the shaft is prone to curvature or the positioning accuracy of the bearing seat hole in the long shaft is poor. But due to poor rigidity, they are suitable to the working conditions where the speed is not high and the noise and vibration are not strictly required.
- Thrust ball bearing
Features: Can only withstand unidirectional axial load.
Application: These bearings design with high axial load, low speed and allow high torque.
Ball bearing type
In the selection of ball bearings, we must first select the appropriate bearing type according to the bearing force status, speed capacity, noise requirements, installation requirements, etc. At the same time, considering the temperature and environmental constraints, select the appropriate bearing materials and methods of lubrication, and then calculate the life of the selected bearing models according to the design space size.