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

Specifications
(Boundary dimensions ...etc)

d(mm)85
D(mm)180
T(mm)44.5
B(mm)41
C(mm)34
r(min.)(mm)4
r1(min.)(mm)3
Basic load ratings : Cr(kN)396
Basic load ratings : C0r(kN)384
Fatigue load limit : Cu(kN)53.0
Limiting speeds(Grease lub.)(min-1)2200
Limiting speeds(Oil lub.)(min-1)2900
Load center spread : a(mm)36.0
Constant e()0.35
Axial load factors : Y1()1.74
Axial load factors : Y0()0.96

Mounting dimensions

da(min.)(mm)103
db(max.)(mm)107
Da(max.)(mm)166
Da(min.)(mm)156
Db(min.)(mm)167
Sa(min.)(mm)5
Sb(min.)(mm)10.5
ra(max.)(mm)3
rb(max.)(mm)2.5

Refer.

(Refer.)Mass(kg) 5.15
JTEKT

2025/06/01