Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 30203JR

Specifications
(Boundary dimensions ...etc)

d(mm)17
D(mm)40
T(mm)13.25
B(mm)12
C(mm)11
r(min.)(mm)1
r1(min.)(mm)1
Basic load ratings : Cr(kN)26.0
Basic load ratings : C0r(kN)20.7
Fatigue load limit : Cu(kN)2.85
Limiting speeds(Grease lub.)(min-1)10000
Limiting speeds(Oil lub.)(min-1)14000
Load center spread : a(mm)10.1
Constant e()0.35
Axial load factors : Y1()1.74
Axial load factors : Y0()0.96

Mounting dimensions

da(min.)(mm)22.5
db(max.)(mm)23
Da(max.)(mm)34.5
Da(min.)(mm)33
Db(min.)(mm)37
Sa(min.)(mm)2
Sb(min.)(mm)2
ra(max.)(mm)1
rb(max.)(mm)1

Refer.

(Refer.)Mass(kg) 0.081
JTEKT

2025/05/29