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


Bearing No. 30305DJR

Specification data (main dimensions, etc.)

d(mm)25
D(mm)62
T(mm)18.25
B(mm)17
C(mm)13
r(min.)(mm)1.5
r1(min.)(mm)1.5
Basic load ratings : Cr(kN)49.7
Basic load ratings : C0r(kN)42.5
Fatigue load limit : Cu(kN)5.80
Limiting speeds(Grease lub.)(min-1)5700
Limiting speeds(Oil lub.)(min-1)8000
Load center spread : a(mm)20.4
Constant e0.83
Axial load factors : Y10.73
Axial load factors : Y00.40

Mounting dimensions,weight (reference)

da(min.)(mm)33.5 mm
db(max.)(mm)34 mm
Da(max.)(mm)53.5 mm
da(min.)(mm)47 mm
db(min.)(mm)58.5 mm
Sa(min.)(mm)3 mm
Sb(min.)(mm)5 mm
ra(max.)(mm)1.5 mm
rb(max.)(mm)1.5 mm
Mass(Refer.)(kg)0.269 kg
JTEKT

2026/08/05