Bearing
Brain
Parts Intelligence
Part page
NTN 308
Deep groove ball · Open
Ø40
Ø90
23
Bore
40 mm
Outside dia
90 mm
Width
23 mm
Dynamic C
45.7 kN
Static C0
36.0 kN
Speed grease
14,000 rpm
Speed oil
8,500 rpm
Clearance
CN (Normal)
Precision
ABEC-1 (P0)
Weight
0.922 kg
Interactive view — 3D model + CAD files →
Substitution sheet — printable →
Evidence
catalog-search · eligible · eval ship · deterministic executor · partsbrain pull 2026-09-08
Interchange family — 8 records
Part number
Manufacturer
Bore×OD×Width
C
308
KOYO (JTEKT)
40×90×23
45.7 kN
308
INA (Schaeffler)
40×90×23
45.7 kN
308
MinebeaMitsumi (NMB)
40×90×23
45.7 kN
308
Nachi Fujikoshi
40×90×23
45.7 kN
308
FAG (Schaeffler)
40×90×23
45.7 kN
308
Timken
40×90×23
45.7 kN
308
RBC Bearings
40×90×23
45.7 kN
308
Peer Bearing
40×90×23
45.7 kN