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
30 mm x 72 mm x 27 mm NTN 2306SK self aligning ball bearings	307 Series	Expansion	4 Bolt Flange	Piston Ring
AST 2305 self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	210 Series	Polymer
45 mm x 85 mm x 23 mm NSK 2209 self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	211 Series	Cast Iron
45 mm x 100 mm x 25 mm ISO 1309K self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	207 Series	Cast Iron
90 mm x 190 mm x 64 mm ISB 2318 self aligning ball bearings	TELESCOPING	9.0000 in	100	CARBON STEEL
100 mm x 180 mm x 34 mm NACHI 1220 self aligning ball bearings	Intermediate Duty	Setscrew Ball Bearing	209 Series	Cast Iron
80 mm x 170 mm x 39 mm SKF 1316 self aligning ball bearings	Intermediate Duty	Setscrew Ball Bearing	206 Series	Zinc
9 mm x 26 mm x 8 mm NSK 129 self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	210 Series	Cast Iron
75 mm x 130 mm x 25 mm NKE 1215-K self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	207 Series	Cast Iron
25 mm x 52 mm x 18 mm ZEN 2205 self aligning ball bearings	Intermediate Duty	Setscrew Ball Bearing	207 Series	Zinc
82,55 mm x 190,5 mm x 39,69 mm SIGMA NMJ 3.1/4 self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	206 Series	Cast Iron
25 mm x 52 mm x 15 mm ZEN S1205 self aligning ball bearings	Normal Duty	Setscrew Ball Bearing	206 Series	Cast Iron