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


Bearing No. 30260

Specification data (main dimensions, etc.)

d(mm)300
D(mm)540
T(mm)96
B(mm)85
C(mm)71
r(min.)(mm)6
r1(min.)(mm)5
Basic load ratings : Cr(kN)1890
Basic load ratings : C0r(kN)2360
Fatigue load limit : Cu(kN)240
Limiting speeds(Grease lub.)(min-1)550
Limiting speeds(Oil lub.)(min-1)730
Load center spread : a(mm)103.9
Constant e0.42
Axial load factors : Y11.44
Axial load factors : Y00.79

Mounting dimensions,weight (reference)

da(min.)(mm)328 mm
db(max.)(mm)350 mm
Da(max.)(mm)518 mm
da(min.)(mm)475 mm
db(min.)(mm)505 mm
Sa(min.)(mm)14 mm
Sb(min.)(mm)24 mm
ra(max.)(mm)5 mm
rb(max.)(mm)4 mm
Mass(Refer.)(kg)84.7 kg
JTEKT

2026/08/03