Self-aligning ball bearings


The self-aligning ball bearing is a two-row bearing with two raceways at the inner ring and one common hollow-sphere raceway in the outer ring. Thus they can be moved angularly and are resistant if the shaft is in inclined position to the housing. They are suitable specifically for bearings for which higher shaft deflection and/or alignment errors have to be expected. Self-aligning ball bearings are available in designs with cylindrical and conical bore.

Sealed self-aligning ball bearings
Sealed self-aligning ball bearings (bearings of series 22 … and 23 …) are provided with contacting seals at both sides. In addition, the grease filling is standard. The bearings can be used at temperatures between -30 °C and 110 °C.

Compensation of misalignment
Self-aligning ball bearings can be slewn by approx. 4° from the center position. This angle is max. 1.5° in sealed bearings.

Self-aligning ball bearings are available in designs with fiber-glass reinforced polyamide 66 as well as with solid brass cages. Some types of self-aligning ball bearings are also available with sheet-metal cage on request (sheet-metal cage is indicated). The same conditions apply to the use of the cage of fiber-glass reinforced polyamide 66 as for deep groove ball bearings

Conical bore
The range of products includes self-aligning ball bearings with cylindrical and conical bore. The cone of the bore is 1:12.

Bearings with wide inner ring
The series112 and 113 self-aligning ball bearings are provided with a wide inner ring. Fixing is by means of clamping pins which engage the longitudinal groove at one side of the inner ring. The tolerance of the bearing bore is J7 for both bearing series.

Installation dimensions
The bearings rings should contact only the shaft and housing shoulder, not the fillet. The balls of some self-aligning ball bearings slightly protrude laterally.

Self-aligning ball bearings            DIN 630
Self-aligning ball bearings with wide inner ring    DIN 630