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


Bearing No. 30315CR

Specification data (main 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)310
Basic load ratings : C0r(kN)296
Fatigue load limit : Cu(kN)42.1
Limiting speeds(Grease lub.)(min-1)2500
Limiting speeds(Oil lub.)(min-1)3400
Load center spread : a(mm)39.2
Constant e0.55
Axial load factors : Y11.10
Axial load factors : Y00.60

Mounting dimensions,weight (reference)

da(min.)(mm)89 mm
db(max.)(mm)94 mm
Da(max.)(mm)148 mm
da(min.)(mm)130 mm
db(min.)(mm)150 mm
Sa(min.)(mm)6 mm
Sb(min.)(mm)9 mm
ra(max.)(mm)2.5 mm
rb(max.)(mm)2 mm
Mass(Refer.)(kg)3.80 kg
JTEKT

2026/07/08