Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
>

Bearing No. 30315JR

Specifications
(Boundary dimensions ...etc)

d(mm)75
D(mm)160
T(mm)40
B(mm)37
C(mm)31
r(min.)(mm)3
r1(min.)(mm)2.5
Basic load ratings : Cr(kN)325
Basic load ratings : C0r(kN)311
Fatigue load limit : Cu(kN)44.9
Limiting speeds(Grease lub.)(min-1)2500
Limiting speeds(Oil lub.)(min-1)3300
Load center spread : a(mm)32.5
Constant e()0.35
Axial load factors : Y1()1.74
Axial load factors : Y0()0.96

Mounting dimensions

da(min.)(mm)89
db(max.)(mm)95
Da(max.)(mm)148
Da(min.)(mm)139
Db(min.)(mm)149
Sa(min.)(mm)4
Sb(min.)(mm)9
ra(max.)(mm)2.5
rb(max.)(mm)2

Refer.

(Refer.)Mass(kg) 3.65
JTEKT

2025/06/01