Koyo
FOR REFERENCE ONLY
  • Cylindrical roller bearings
  • Single-row
  • NH


Bearing No. NH308R

Specification data (main dimensions, etc.)

d(mm)40
D(mm)90
B(mm)23
r(min.)(mm)1.5
r1(min.)(mm)1.5
Fw(mm)52
Ew(mm)-
Basic load ratings : Cr(kN)104
Basic load ratings : C0r(kN)81.5
Fatigue load limit : Cu(kN)11.0
Limiting speeds(Grease lub.)(min-1)6800
Limiting speeds(Oil lub.)(min-1)9100
sd1(mm)57.7
B1(mm)7
B2(mm)11

Mounting dimensions,weight (reference)

da(min.)(mm)48 mm
db(min.)(mm)- mm
db(max.)(mm)- mm
dc(min.)(mm)- mm
dd(min.)(mm)- mm
Da(max.)(mm)82 mm
Db(max.)(mm)- mm
Db(min.)(mm)- mm
ra(max.)(mm)1.5 mm
rb(max.)(mm)1.5 mm
Mass(Refer.)(kg)0.775 kg
JTEKT

2026/07/01