Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 30315DR

Specifications
(Boundary dimensions ...etc)

d(mm)75
D(mm)160
T(mm)40
B(mm)37
C(mm)26
r(min.)(mm)3
r1(min.)(mm)2.5
Basic load ratings : Cr(kN)277
Basic load ratings : C0r(kN)266
Fatigue load limit : Cu(kN)36.9
Limiting speeds(Grease lub.)(min-1)2100
Limiting speeds(Oil lub.)(min-1)2900
Load center spread : a(mm)48.8
Constant e()0.81
Axial load factors : Y1()0.74
Axial load factors : Y0()0.41

Mounting dimensions

da(min.)(mm)89
db(max.)(mm)91
Da(max.)(mm)148
Da(min.)(mm)127
Db(min.)(mm)151
Sa(min.)(mm)6
Sb(min.)(mm)14
ra(max.)(mm)2.5
rb(max.)(mm)2

Refer.

(Refer.)Mass(kg) 3.48
JTEKT

2025/07/05