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


Bearing No. 30338

Specification data (main dimensions, etc.)

d(mm)190
D(mm)400
T(mm)86
B(mm)78
C(mm)65
r(min.)(mm)6
r1(min.)(mm)5
Basic load ratings : Cr(kN)1260
Basic load ratings : C0r(kN)1250
Fatigue load limit : Cu(kN)139
Limiting speeds(Grease lub.)(min-1)880
Limiting speeds(Oil lub.)(min-1)1200
Load center spread : a(mm)73.2
Constant e0.35
Axial load factors : Y11.73
Axial load factors : Y00.95

Mounting dimensions,weight (reference)

da(min.)(mm)218 mm
db(max.)(mm)241 mm
Da(max.)(mm)378 mm
da(min.)(mm)342 mm
db(min.)(mm)370 mm
Sa(min.)(mm)10 mm
Sb(min.)(mm)20 mm
ra(max.)(mm)5 mm
rb(max.)(mm)4 mm
Mass(Refer.)(kg)46.2 kg
JTEKT

2026/07/08