Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series


Bearing No. 30316JR

Specification data (main dimensions, etc.)

d(mm)80
D(mm)170
T(mm)42.5
B(mm)39
C(mm)33
r(min.)(mm)3
r1(min.)(mm)2.5
Basic load ratings : Cr(kN)368
Basic load ratings : C0r(kN)355
Fatigue load limit : Cu(kN)49.9
Limiting speeds(Grease lub.)(min-1)2300
Limiting speeds(Oil lub.)(min-1)3100
Load center spread : a(mm)34.8
Constant e0.35
Axial load factors : Y11.74
Axial load factors : Y00.96

Mounting dimensions,weight (reference)

da(min.)(mm)94 mm
db(max.)(mm)102 mm
Da(max.)(mm)158 mm
da(min.)(mm)148 mm
db(min.)(mm)159 mm
Sa(min.)(mm)4 mm
Sb(min.)(mm)9.5 mm
ra(max.)(mm)2.5 mm
rb(max.)(mm)2 mm
Mass(Refer.)(kg)4.46 kg
JTEKT

2026/07/06