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 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.
- 35 mm x 80 mm x 23 mm skf 2208 EKTN9 + H 308 Self-aligning ball bearings
- 4 x 7/8-9 UNC
- 340 r/min
- 30 mm x 72 mm x 23 mm skf 2207 EKTN9 + H 307 Self-aligning ball bearings
- 19000 rpm
- 24000 rpm
- 50 mm x 110 mm x 27 mm skf 1310 ETN9 Self-aligning ball bearings
- 1.00 mm
- 2.50 mm