Angular Contact Ball Bearing Assembly In Pairs

Angular Contact Ball Bearing Assembly in Pairs

Angular contact ball bearings can withstand both radial and axial loads. They can work at higher speeds. The larger the contact angle, the higher the axial load carrying capacity. High precision and high-speed bearings typically take a 15-degree contact angle. Under the axial force, the contact angle will increase. Single row angular contact ball bearings can only withstand axial loads in one direction and will cause additional axial forces when subjected to radial loads.

And they can only limit the axial displacement of the shaft or housing in one direction. If the angular contact bearings are installed in pairs, the outer rings of a pair of bearings are opposite, that is, the wide end faces the wide end, and the narrow end faces the narrow end. This avoids causing additional axial forces and limits the shaft or housing to axial play in both directions.

After the deep groove ball bearing is mounted on the shaft, the axial displacement of the shaft or the casing can be restricted within the axial clearance of the bearing, so that the axial positioning can be performed in both directions. When the deep groove ball bearing has a large radial clearance, it has the performance of an angular contact bearing and can withstand a large axial load.

Deep groove ball bearings are superior to thrust ball bearings in high-speed operating conditions with large axial loads. In addition, this kind of bearing also has a certain ability of self-aligning. When it is inclined 2'~10' with respect to the hole of the casing, it can still work normally, but it has a certain influence on bearing life.

Why are angular contact bearings often used in pairs?

Angular contact bearings can take side-thrust but in one direction only. If the direction of thrust is known and if substantial, a thrust bearing will be the choice. However, if side thrust is not substantial ( < 30%) but bi-directional (due to say, ply or load-reversal) a pair of angular bearings is the choice to handle the side thrusts both ways.

What is the difference between angular contact bearing, radial bearing, and four-point contact bearing?

The difference is the different shapes of the grooves. For the Thin Section Angular Contact Ball Bearings (A Type), the raceway and the steel balls are angular contacted. The center of the raceway radius deviates from the center-line of the steel balls and symmetrically distributed around the center-line. For the Thin Section Radial Contact Ball Bearings (C Type), the center of the raceway radius is on the center-line of the steel balls.  For the Thin Section Four Point Contact Ball Bearings (X Type), there are two centers of the raceway radius on each side of the raceway and both deviate from the center-line of the steel balls, which enables the Thin Section Four Point Contact Ball Bearings (X Type) to form four-point contact between the raceway and steel balls.

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