NTN Bearing de Mexico, S.A.

Self Aligning Ball Bearings

Self-aligning ball bearings have two rows of balls, a common sphered raceway in the outer ring and two deep uninterrupted raceway grooves in the inner ring. They are available open or sealed. The bearings are insensitive to angular misalignment of the shaft relative to the housing (fig. 1), which can be caused, for example, by shaft deflection.

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.

CONSOLIDATED BEARING 2219 M Self Aligning Ball Bearings
3.135
3.1 kg
CONSOLIDATED BEARING 2219-KM Self Aligning Ball Bearings
117,475 mm
101.6x117.475x7.938
CONSOLIDATED BEARING 2219 C/3 Self Aligning Ball Bearings
2600 r/min
95x240x55
CONSOLIDATED BEARING 2218-KM Self Aligning Ball Bearings
665 kN
2,1 mm
CONSOLIDATED BEARING 2219-K Self Aligning Ball Bearings
65,000
CRF-30313 A
CONSOLIDATED BEARING 2218 C/3 Self Aligning Ball Bearings
Metric
8482.50.00.00
CONSOLIDATED BEARING 2218 Self Aligning Ball Bearings
B00308
32500 lbf / Static l
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