Bearings with a 40 mm bore

30 bearings on this site have a 40 mm bore, across 7 outside diameters (52–90 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)
6808	Deep Groove Ball Bearing	40	52	7
51108	Thrust Ball Bearing	40	60	13
6908	Deep Groove Ball Bearing	40	62	12
16008	Deep Groove Ball Bearing	40	68	9
51208	Thrust Ball Bearing	40	68	19
6008	Deep Groove Ball Bearing	40	68	15
7008	Angular Contact Ball Bearing	40	68	15
NU1008	Cylindrical Roller Bearing	40	68	15
51308	Thrust Ball Bearing	40	78	26
1208	Self-Aligning Ball Bearing	40	80	18
2208	Self-Aligning Ball Bearing	40	80	23
30208	Tapered Roller Bearing	40	80	19.75
6208	Deep Groove Ball Bearing	40	80	18
7208	Angular Contact Ball Bearing	40	80	18
N208	Cylindrical Roller Bearing	40	80	18
NU208	Cylindrical Roller Bearing	40	80	18
NU2208	Cylindrical Roller Bearing	40	80	23
QJ208	Four-Point Contact Ball Bearing	40	80	18
UC208	Insert (Mounted) Ball Bearing	40	80	49.2
1308	Self-Aligning Ball Bearing	40	90	23
22308	Spherical Roller Bearing	40	90	33
2308	Self-Aligning Ball Bearing	40	90	33
30308	Tapered Roller Bearing	40	90	25.25
51408	Thrust Ball Bearing	40	90	36
6308	Deep Groove Ball Bearing	40	90	23
7308	Angular Contact Ball Bearing	40	90	23
N308	Cylindrical Roller Bearing	40	90	23
NU2308	Cylindrical Roller Bearing	40	90	33
NU308	Cylindrical Roller Bearing	40	90	23
QJ308	Four-Point Contact Ball Bearing	40	90	23

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