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.
In a self-aligning bearing, the inner ring has two raceways and the outer ring has a single spherical raceway with its center of curvature coincident with the bearing axis. This allows the axis of the inner ring, balls and cage to deflect around the bearing center to automatically correct misalignment caused by housing and shaft machining or installation error.
A self-aligning bearing is recommended when the alignment of the shaft and housing is difficult or when the shaft may bend during operation. Brda notes that similar to deep groove ball bearings, most self-aligning ball are for general use.
- 45 mm x 85 mm x 19 mm ISB 1209 TN9 self aligning ball bearings
- 4.9375 in
- 19.7030 in
- 30 mm x 72 mm x 27 mm SKF 2306E-2RS1TN9 self aligning ball bearings
- Cast Iron
- 2-7/32 in
- 65 mm x 140 mm x 33 mm NKE 1313-K+H313 self aligning ball bearings
- 4.9375 in
- 19.7030 in
- 110 mm x 200 mm x 38 mm ISO 1222K self aligning ball bearings
- Cast Iron
- 2-7/32 in
- Toyana 2312K self aligning ball bearings
- IKO
- 88,2 kN
- 90,000 mm x 190,000 mm x 64,000 mm SNR 2318K self aligning ball bearings
- Commercial
- .5620 in
- 17 mm x 40 mm x 16 mm FBJ 2203 self aligning ball bearings
- 15,875 mm
- 15,875
