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


Bearing No. 30220JR

Specification data (main dimensions, etc.)

d(mm)100
D(mm)180
T(mm)37
B(mm)34
C(mm)29
r(min.)(mm)3
r1(min.)(mm)2.5
Basic load ratings : Cr(kN)323
Basic load ratings : C0r(kN)338
Fatigue load limit : Cu(kN)49.1
Limiting speeds(Grease lub.)(min-1)2100
Limiting speeds(Oil lub.)(min-1)2800
Load center spread : a(mm)36.8
Constant e0.42
Axial load factors : Y11.43
Axial load factors : Y00.79

Mounting dimensions,weight (reference)

da(min.)(mm)114 mm
db(max.)(mm)116 mm
Da(max.)(mm)168 mm
da(min.)(mm)157 mm
db(min.)(mm)168 mm
Sa(min.)(mm)5 mm
Sb(min.)(mm)8 mm
ra(max.)(mm)2.5 mm
rb(max.)(mm)2 mm
Mass(Refer.)(kg)3.83 kg
JTEKT

2026/07/07