self aligning ball bearings

This type of ball bearing is recommended when alignment of the shaft and housing is difficult and the shaft may flex. The outer ring has a spherical raceway and its center of curvature coincides with that of the bearing; therefore, the axis of the inner ring, balls and cage can deflect to some extent around the bearing center. Pressed steel cages are usually used. Since the contact angle is small, the axial load capacity is low. The permissible dynamic misalignment is approximately 0.07 to 0.12 radian (4 to 7 degrees) under normal loads.However, depending on the surrounding structure, such an angle may not be possible.

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.

Bearing Number	Bore Dia	Outer DIa	Width	Size
65 mm x 120 mm x 23 mm NKE 1213-K+H213 self aligning ball bearings	710 mm	950 mm	375 mm	243 mm
50,000 mm x 90,000 mm x 23,000 mm SNR 2210K self aligning ball bearings	320 mm	540 mm	176 mm	5 mm
85 mm x 150 mm x 36 mm KOYO 2217 self aligning ball bearings	300 mm	500 mm	160 mm	5 mm
95 mm x 200 mm x 45 mm NTN 1319S self aligning ball bearings	260 mm	440 mm	144 mm	4 mm
65 mm x 160 mm x 55 mm ISB 2315 K+H2315 self aligning ball bearings	220 mm	340 mm	118 mm	3 mm
AST 1206 self aligning ball bearings	560 mm	800 mm	230 mm	150 mm
110 mm x 240 mm x 80 mm ISO 2322K self aligning ball bearings	1000 mm	1470 mm	530 mm	345 mm
100 mm x 215 mm x 73 mm ISO 2320K+H2320 self aligning ball bearings	50.000 mm	110.0000 mm	44.40 mm	2.00 mm
31.75 mm x 69,85 mm x 17,4625 mm RHP NLJ1.1/4 self aligning ball bearings	400 mm	820 mm	243 mm	7.5 mm
45 mm x 85 mm x 23 mm NKE 2209-K-2RS+H309 self aligning ball bearings	380 mm	620 mm	194 mm	5 mm
82,55 mm x 190,5 mm x 39,6875 mm RHP NMJ3.1/4 self aligning ball bearings	75.000 mm	130.0000 mm	41.30 mm	1.50 mm
Toyana 1302 self aligning ball bearings	15.000 mm	24.0000 mm	5.00 mm	0.30 mm