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


Bearing No. 30204JR

Specification data (main dimensions, etc.)

d(mm)20
D(mm)47
T(mm)15.25
B(mm)14
C(mm)12
r(min.)(mm)1
r1(min.)(mm)1
Basic load ratings : Cr(kN)33.8
Basic load ratings : C0r(kN)27.2
Fatigue load limit : Cu(kN)3.80
Limiting speeds(Grease lub.)(min-1)8700
Limiting speeds(Oil lub.)(min-1)12000
Load center spread : a(mm)11.8
Constant e0.35
Axial load factors : Y11.74
Axial load factors : Y00.96

Mounting dimensions,weight (reference)

da(min.)(mm)25.5 mm
db(max.)(mm)27 mm
Da(max.)(mm)41.5 mm
da(min.)(mm)39 mm
db(min.)(mm)44 mm
Sa(min.)(mm)2 mm
Sb(min.)(mm)3 mm
ra(max.)(mm)1 mm
rb(max.)(mm)1 mm
Mass(Refer.)(kg)0.127 kg
JTEKT

2026/07/04