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 1203JC3 Self Aligning Ball Bearings 35 35 mm 421/412A 29,083 mm
NTN 1203J Self Aligning Ball Bearings FAG BEARING 2.205 Inch | 56 Mill Single Row 40.564
NTN 1203C3 Self Aligning Ball Bearings Single Row Ball Bear 1.4024 No Deep Groove | Electr
NTN 1202G15C3 Self Aligning Ball Bearings Needle Bearing Bearing Inch SMITH BEARING
NTN 1201C3 Self Aligning Ball Bearings 95 mm 67 185 mm 95
NTN 1201JC3 Self Aligning Ball Bearings 0.23 0.0 N/A B04334
NTN 1201G15C3 Self Aligning Ball Bearings 160 48 mm SIGMA 48 mm
NTN 1200C3 Self Aligning Ball Bearings 1.12 BEARINGS LIMITED 1.0 N/A
NTN 1200G15 Self Aligning Ball Bearings FYH BEARING UNITS Mounted Units & FYH 0
NTN 11207G15 Self Aligning Ball Bearings No 0.683 KOYO B00308
NTN 11206G15 Self Aligning Ball Bearings 1,5 mm 25 mm 45 mm 45
NTN 11205G15 Self Aligning Ball Bearings Class 3 B04334 Tapered Roller Beari 0.875 Inch | 22.225
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