Bearing
Brain
Parts Intelligence
Part page
NTN 309
Deep groove ball · Open
Ø45
Ø100
25
Bore
45 mm
Outside dia
100 mm
Width
25 mm
Dynamic C
55.0 kN
Static C0
44.0 kN
Speed grease
13,000 rpm
Speed oil
7,500 rpm
Clearance
CN (Normal)
Precision
ABEC-1 (P0)
Weight
1.229 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
309
KOYO (JTEKT)
45×100×25
55.0 kN
309
INA (Schaeffler)
45×100×25
55.0 kN
309
MinebeaMitsumi (NMB)
45×100×25
55.0 kN
309
Nachi Fujikoshi
45×100×25
55.0 kN
309
FAG (Schaeffler)
45×100×25
55.0 kN
309
Timken
45×100×25
55.0 kN
309
RBC Bearings
45×100×25
55.0 kN
309
Peer Bearing
45×100×25
55.0 kN