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NTN 311 NR

Deep groove ball · Open
Ø55Ø12029
Bore
55 mm
Outside dia
120 mm
Width
29 mm
Dynamic C
79.2 kN
Static C0
67.0 kN
Speed grease
10,000 rpm
Speed oil
6,300 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 — 8 records

Part numberManufacturerBore×OD×WidthC
311 NRKOYO (JTEKT)55×120×2979.2 kN
311 NRINA (Schaeffler)55×120×2979.2 kN
311 NRMinebeaMitsumi (NMB)55×120×2979.2 kN
311 NRNachi Fujikoshi55×120×2979.2 kN
311 NRFAG (Schaeffler)55×120×2979.2 kN
311 NRTimken55×120×2979.2 kN
311 NRRBC Bearings55×120×2979.2 kN
311 NRPeer Bearing55×120×2979.2 kN