self aligning ball bearings

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.

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.

Bearing Number	Bore Dia	Outer DIa	Width	Size
55 mm x 120 mm x 43 mm NSK 2311 K self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	207 Series	Cast Iron
50 mm x 90 mm x 20 mm FAG 1210-K-TVH-C3 + H210 self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	203 Series	Zinc
Toyana 2208K self aligning ball bearings	Intermediate Duty	Setscrew Ball Bearing	207 Series	Zinc
35 mm x 80 mm x 23 mm ISB 2208 KTN9+H308 self aligning ball bearings	Intermediate Duty	Eccentric Collar Ball Bearing	207 Series	Cast Iron
50 mm x 110 mm x 27 mm ISB 1310 TN9 self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	204 Series	Cast Iron
Toyana 2306K self aligning ball bearings	Intermediate Duty	Setscrew Ball Bearing	207 Series	Zinc
ISB TSM 25 BB self aligning ball bearings	Intermediate Duty	Setscrew Ball Bearing	207 Series	Cast Iron
ISB TSF 12 BB-O self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	206 Series	Cast Iron
75 mm x 160 mm x 37 mm NKE 1315-K self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	207 Series	Cast Iron
20 mm x 47 mm x 14 mm KOYO 1204 self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	203 Series	Zinc