Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 30317DJR

Specifications
(Boundary dimensions ...etc)

d(mm)85
D(mm)180
T(mm)44.5
B(mm)41
C(mm)28
r(min.)(mm)4
r1(min.)(mm)3
Basic load ratings : Cr(kN)328
Basic load ratings : C0r(kN)317
Fatigue load limit : Cu(kN)42.6
Limiting speeds(Grease lub.)(min-1)1900
Limiting speeds(Oil lub.)(min-1)2600
Load center spread : a(mm)56.3
Constant e()0.83
Axial load factors : Y1()0.73
Axial load factors : Y0()0.40

Mounting dimensions

da(min.)(mm)103
db(max.)(mm)103
Da(max.)(mm)166
Da(min.)(mm)143
Db(min.)(mm)169
Sa(min.)(mm)6
Sb(min.)(mm)16.5
ra(max.)(mm)3
rb(max.)(mm)2.5

Refer.

(Refer.)Mass(kg) 4.81
JTEKT

2025/06/11