Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 30305DJR

Specifications
(Boundary 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 e()0.83
Axial load factors : Y1()0.73
Axial load factors : Y0()0.40

Mounting dimensions

da(min.)(mm)33.5
db(max.)(mm)34
Da(max.)(mm)53.5
Da(min.)(mm)47
Db(min.)(mm)58.5
Sa(min.)(mm)3
Sb(min.)(mm)5
ra(max.)(mm)1.5
rb(max.)(mm)1.5

Refer.

(Refer.)Mass(kg) 0.269
JTEKT

2025/06/01