Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 30309DJR

Specifications
(Boundary dimensions ...etc)

d(mm)45
D(mm)100
T(mm)27.25
B(mm)25
C(mm)18
r(min.)(mm)2
r1(min.)(mm)1.5
Basic load ratings : Cr(kN)119
Basic load ratings : C0r(kN)107
Fatigue load limit : Cu(kN)15.8
Limiting speeds(Grease lub.)(min-1)3400
Limiting speeds(Oil lub.)(min-1)4700
Load center spread : a(mm)32.9
Constant e()0.83
Axial load factors : Y1()0.73
Axial load factors : Y0()0.40

Mounting dimensions

da(min.)(mm)55
db(max.)(mm)56
Da(max.)(mm)90
Da(min.)(mm)79
Db(min.)(mm)96
Sa(min.)(mm)3
Sb(min.)(mm)9
ra(max.)(mm)2
rb(max.)(mm)1.5

Refer.

(Refer.)Mass(kg) 0.973
JTEKT

2025/07/04