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
80 mm x 170 mm x 39 mm ISO 1316K self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	205 Series	Cast Iron
40 mm x 80 mm x 23 mm ISB 2208-2RSKTN9 self aligning ball bearings	Medium Duty	Setscrew Ball Bearing	218 Series	Cast Iron
45 mm x 100 mm x 25 mm NTN 1309S self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	207 Series	Cast Iron
30 mm x 72 mm x 27 mm ISB 2306 K self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	206 Series	Cast Iron
65 mm x 130 mm x 25 mm ISB 1215 K+H215 self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	214 Series	Cast Iron
100 mm x 215 mm x 73 mm NKE 2320-K+H2320 self aligning ball bearings	Intermediate Duty	Setscrew Ball Bearing	205 Series	Zinc
95 mm x 170 mm x 43 mm ISO 2219 self aligning ball bearings	Intermediate Duty	Setscrew Ball Bearing	207 Series	Zinc
105 mm x 225 mm x 77 mm NACHI 2321 self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	204 Series	Cast Iron
30 mm x 72 mm x 27 mm NTN 2306S self aligning ball bearings	Medium Duty	Setscrew Ball Bearing	208 Series	Cast Iron
Toyana 1301 self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	204 Series	Polymer
85 mm x 150 mm x 36 mm NACHI 2217K self aligning ball bearings	Intermediate Duty	Setscrew Ball Bearing	207 Series	Zinc
60 mm x 130 mm x 46 mm NTN 2312S self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	203 Series	Zinc