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


Bearing No. 30315DR

Specification data (main 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 e0.81
Axial load factors : Y10.74
Axial load factors : Y00.41

Mounting dimensions,weight (reference)

da(min.)(mm)89 mm
db(max.)(mm)91 mm
Da(max.)(mm)148 mm
da(min.)(mm)127 mm
db(min.)(mm)151 mm
Sa(min.)(mm)6 mm
Sb(min.)(mm)14 mm
ra(max.)(mm)2.5 mm
rb(max.)(mm)2 mm
Mass(Refer.)(kg)3.48 kg
JTEKT

2026/07/08