Self-aligning ball bearings

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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 which can be caused, for example, by shaft deflection

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.

Bearing Number	Bore Dia	Outer DIa	Width	Size
55 mm x 120 mm x 43 mm skf 2311 KM Self-aligning ball bearings	53000 r/min	44.6 mm	1.04	4.762 mm
50 mm x 110 mm x 40 mm skf 2310 E-2RS1TN9 Self-aligning ball bearings	133.400 mm	3230000 N	220 mm	METRIC
40 mm x 90 mm x 23 mm skf 1308 EM Self-aligning ball bearings	24032SWRCg2E4	2,1 mm	680 kN	240
25 mm x 62 mm x 17 mm skf 1305 ETN9 Self-aligning ball bearings	SF3806DB	66,000 mm	190,000	255,000
17 mm x 47 mm x 19 mm skf 2303 M Self-aligning ball bearings	1.2 kg	140 mm	WS81228	140,000
55 mm x 110 mm x 22 mm skf 1212 EKTN9 + H 212 Self-aligning ball bearings	4012802446494	2480 1/min / Limitin	2.095	4.016 Inch \| 102 Mil
60 mm x 120 mm x 23 mm skf 1213 EKTN9 + H 213 Self-aligning ball bearings	55,000	105,000 mm	105,000	55,000 mm
80 mm x 190 mm x 64 mm skf 2318 K + H 2318 Self-aligning ball bearings	1,5 mm	116 kN	1,5 mm	8000 r/min
50 mm x 100 mm x 21 mm skf 1211 EKTN9 + H 211 Self-aligning ball bearings	203.2 mm	Stamped Steel	4.320 mm	912.5
45 mm x 100 mm x 36 mm skf 2309 EKTN9 Self-aligning ball bearings	7309-B	25	45 mm x 100 mm x 36 mm	45
70 mm x 140 mm x 33 mm skf 2216 EKTN9 + H 316 Self-aligning ball bearings	52,000	NTN	28,500 mm	15,000
100 mm x 180 mm x 46 mm skf 2220 K Self-aligning ball bearings	100 mm	260 kN	100	40 mm