Self-aligning ball bearings are main products in Sunspeed. Sunspeed self-aligning ball bearings adhere to the people-oriented concept as well as the the principle of "quality first, service first", sparing no effort in achieving the long-term development of the company.
Self-aligning ball bearings have two rows of balls, a commonly 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.
Self-aligning ball bearings are recommended when the alignment of the shaft and housing are 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 rings, balls, and cages 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.
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