Bearings with a 55 mm bore

28 bearings on this site have a 55 mm bore, across 7 outside diameters (72–120 mm). Use the table to find one by its outside diameter and width, then open its page for the cross-brand equivalents and interchange notes.

Designation	Type	Bore (mm)	Outside Ø (mm)	Width (mm)
6811	Deep Groove Ball Bearing	55	72	9
51111	Thrust Ball Bearing	55	78	16
6911	Deep Groove Ball Bearing	55	80	13
16011	Deep Groove Ball Bearing	55	90	11
51211	Thrust Ball Bearing	55	90	25
6011	Deep Groove Ball Bearing	55	90	18
7011	Angular Contact Ball Bearing	55	90	18
NU1011	Cylindrical Roller Bearing	55	90	18
1211	Self-Aligning Ball Bearing	55	100	21
2211	Self-Aligning Ball Bearing	55	100	25
6211	Deep Groove Ball Bearing	55	100	21
7211	Angular Contact Ball Bearing	55	100	21
N211	Cylindrical Roller Bearing	55	100	21
NU211	Cylindrical Roller Bearing	55	100	21
NU2211	Cylindrical Roller Bearing	55	100	25
QJ211	Four-Point Contact Ball Bearing	55	100	21
UC211	Insert (Mounted) Ball Bearing	55	100	55.6
51311	Thrust Ball Bearing	55	105	35
1311	Self-Aligning Ball Bearing	55	120	29
22311	Spherical Roller Bearing	55	120	43
2311	Self-Aligning Ball Bearing	55	120	43
51411	Thrust Ball Bearing	55	120	48
6311	Deep Groove Ball Bearing	55	120	29
7311	Angular Contact Ball Bearing	55	120	29
N311	Cylindrical Roller Bearing	55	120	29
NU2311	Cylindrical Roller Bearing	55	120	43
NU311	Cylindrical Roller Bearing	55	120	29
QJ311	Four-Point Contact Ball Bearing	55	120	29

Not the bore you need? See the full bearing size chart to pick another bore diameter, or read identify an unmarked bearing to work back from three measurements.

Dimensional reference only (55 mm bore, per ISO boundary-dimension standards). Confirm load ratings and suitability in the manufacturer's catalogue.