Description

Self Aligning Ball Bearing Tapered Bore (C3)

Tapered bore.
C3, clearance greater than normal.
The inner ring of this type of bearing has two raceways and the outer ring has a single spherical raceway with its center of curvature coincident with the bearing axis.
Therefore, the axis of the inner ring, balls, and cage can deflect to some extent around the bearing center.
Consequently, minor angular misalignment of the shaft and housing caused by the machining or mounting error is automatically corrected.
This type of bearing often has a tapered bore for mounting using an adapter sleeve.

About Self Aligning Ball Bearing

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.
This type is recommended when the alignment of the shaft and housing is difficult and when the shaft may bend.
Since the contact angle is small, the axial load capacity is low.
Pressed steel cages are usually used.