motor bearing

Deep groove ball bearings, as the most representative rolling bearings, are widely used and very durable. Deep groove ball bearing has the advantages of small friction coefficient, high limit speed, simple structure, low manufacturing cost and easy to achieve high manufacturing accuracy.

1. Structural composition: The deep groove ball bearing consists of two opposite ring components - the inner ring (mounted on the shaft) and the outer ring (mounted on the bearing seat or housing), as well as a number of steel balls and a cage. The inner and outer rings have continuous and semi-circular deep grooves in cross-section, which are matched with the steel ball to form a raceway.

2. Bearing load: When the bearing is installed and running, the steel ball rolls between the raceways of the inner and outer rings. This type of bearing is mainly designed to bear radial loads, and because there is a certain contact Angle between the steel ball and the inner and outer raceway, it can also bear small axial loads (loads parallel to the axis direction) under certain conditions. Especially when there is a large radial clearance inside the bearing, the performance of the angular contact bearing can be simulated to improve the axial bearing capacity.

3. Reduce friction: By transforming sliding friction into rolling friction, deep groove ball bearings greatly reduce the friction resistance during operation, thereby improving mechanical efficiency, reducing energy loss, and allowing for higher rotation speeds.

4. Cage function: The cage is fixed inside the bearing to evenly separate the steel balls and ensure that they roll freely on the correct trajectory to prevent collision and friction between the steel balls, further ensuring the stability of the bearing and reducing operating noise.

5. Two-way positioning: Within the appropriate range of axial clearance, the deep groove ball bearing can limit the axial displacement of the shaft or housing in both directions to achieve two-way axial positioning.

6. Adaptability: The deep groove ball bearing allows the shaft and the housing hole to have a certain degree of deflection (8 '~ 16'), which can still operate normally under asymmetric load, but too much deflection will reduce the service life of the bearing.

7. Working principle: When the bearing is running, the steel ball rolls in the deep groove of the inner and outer raceway, which can effectively reduce the friction force, and can withstand the load from two directions, that is, the radial load and the smaller axial load. When the radial clearance is increased, it can bear a large bidirectional axial load at the same time. Overall, deep groove ball bearings use rolling elements and optimized design to achieve efficient and stable rotary motion support, and provide good durability and reliability in a variety of operating conditions.