double row angular contact ball bearing 3000 5000 series

The design of double row angular contact ball bearing is basically the same as single row angular contact ball bearing, but only takes up less axial space. Double row angular contact ball bearing can withstand radial loads and axial loads acting in both directions.They can limit bidirectional axial displacement of the shaft or housing, with a contact angle of 30 degrees. A more rigid bearing configuration can be provided.

Capable of withstanding overturning torque. The bearings are non separable. Especially suitable for applications with high rigidity requirements. Widely used in front wheel hubs of small cars.

Performance characteristics
The inclinability between the inner and outer rings of a double row angular contact ball bearing is limited. The allowable inclination angle depends on the internal clearance, bearing size, internal design, and the forces and moments acting on the bearing. The maximum allowable inclination angle should ensure that excessive additional stresses do not occur in the bearing.
If there is an inclination angle between the inner and outer rings of the bearing, it will affect the service life of the bearing, and at the same time, cause a decrease in the operating accuracy of the bearing, and increase the operating noise.

Double row angular contact ball bearings generally use nylon cages or brass solid cages. When installing a double row angular contact ball bearing, it should be noted that although the bearing can withstand bidirectional axial loads, if there is a ball mounting gap on one side, it should be noted not to allow the main axial load to pass through the groove on the notched side. When using bearings, attention should be paid to making the raceway on the side without the ball mounting notch bear the main load.

Pay attention to preloading during installation.
The size of the preload has a significant impact on the service life of the bearing, so it is important to make a reasonable selection of the size of the preload. Generally, small preloads should be selected for high rotational speeds, and large preloads should be selected for low rotational speeds. At the same time, the preload should be slightly greater than or equal to the axial working load.

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