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Self-aligning Ball Bearings

Self-aligning Ball Bearings

Self-aligning ball bearings have two rows of balls and a common sphered raceway in the outer ring. The bearings are insensitive to angular misalignment of the shaft relative to the housing. Self-aligning ball bearings generate less friction than any other type of rolling bearing, which enables them to run cooler even at high speeds.  

Design: Open and Sealed

Cage: Stamped steel, Solid brass, Nylon, etc

This type of ball bearing is recommended when alignment of the shaft and housing is difficult and the shaft may flex.  The outer ring has a spherical raceway and its center of curvature coincides with that of the bearing; therefore, the axis of the inner ring, balls and cage can deflect to some extent around the bearing center. Pressed steel cages are usually used. Since the contact angle is small, the axial load capacity is low. The permissible dynamic misalignment is approximately 0.07 to 0.12 radian (4 to 7 degrees) under normal loads.

However, depending on the surrounding structure, such an angle may not be possible.

FV self-aligning ball bearings are available in several designs, including:

 basic design bearings ( fig. 1) 

 bearings with an extended inner ring (fig. 2)

 sealed bearings (fig. 3)

self-aligning ball bearings - Types




Self-Aligning Ball Bearings

Self-Aligning Ball Bearings

Self-aligning ball bearings are double row, self-retaining units comprising outer rings with a concave raceway, inner rings with a cylindrical or tapered bore and ball and cage assemblies. The bearing...

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