Bearing
Brain
Parts Intelligence
Part page
NTN 6311 N
Deep groove ball · Open
Ø55
Ø120
29
Bore
55 mm
Outside dia
120 mm
Width
29 mm
Dynamic C
74.1 kN
Static C0
45.0 kN
Speed grease
12,000 rpm
Speed oil
8,000 rpm
Clearance
CN (Normal)
Precision
ABEC-1 (P0)
Weight
2.034 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 — 7 records
Part number
Manufacturer
Bore×OD×Width
C
6311 N
KOYO (JTEKT)
55×120×29
74.1 kN
6311 N
INA (Schaeffler)
55×120×29
74.1 kN
6311 N
MinebeaMitsumi (NMB)
55×120×29
74.1 kN
6311 N
FAG (Schaeffler)
55×120×29
74.1 kN
6311 N
Timken
55×120×29
74.1 kN
6311 N
RBC Bearings
55×120×29
74.1 kN
6311 N
Peer Bearing
55×120×29
74.1 kN