Self Aligning Ball Bearings

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In a self-aligning bearing, the inner ring has two raceways and the outer ring has a single spherical raceway with its center of curvature coincident with the bearing axis. This allows the axis of the inner ring, balls and cage to deflect around the bearing center to automatically correct misalignment caused by housing and shaft machining or installation error.

Paul Brda, Application Engineer, NSK Americas explains, “Whereas a ball bearing only has one raceway groove on both the inner and outer ring and is the most common type of rolling bearing.”

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.
Depending on the series, most self-aligning bearings can be interchanged with standard ball bearing assemblies. (6200 and 6300 have direct interchanges with the 1200 and 1300 series). “However, if this is not possible, the self-aligning bearing may be wider or can have a tapered bore,” Brda explai

Bearing Number Bore Dia Outer DIa Width Size
NTN 2303 Self Aligning Ball Bearings 31171533 0.0 Ball Bearing 3.6
NTN 2220 Self Aligning Ball Bearings K 81207-TVPB NKE 35x62x7.5 35
NTN 2220L1KC3 Self Aligning Ball Bearings B04144 Bearings SEW EURODRIVE N/A
NTN 2222KC3 Self Aligning Ball Bearings SCV 10-UU AS 13 mm 40 mm 26 mm
NTN 2222C3 Self Aligning Ball Bearings 51,5 Kg 45 mm 405 mm 260
NSK 1224M Self Aligning Ball Bearings SCHAEFFLER GROUP B04144 Bearings N/A
NSK 1222K Self Aligning Ball Bearings Bearings FAG BEARING 1.62 0.0
NTN 2306L1C3 Self Aligning Ball Bearings NTN 0.0 8 500 r/min 18 kN
NTN 2306L1 Self Aligning Ball Bearings 0087796264274 31171531 3.15 Inch | 80 Milli 2 Seals
NTN 2306EEG15 Self Aligning Ball Bearings N/A B04120 0.0 BISHOP-WISECARVER
NTN 2304C3 Self Aligning Ball Bearings Bearings SCHAEFFLER GROUP FAG BEARING M06288
NTN 2304EEG15 Self Aligning Ball Bearings 0.0 18.898 Inch | 480 Mi 8482.10.50.68 No
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