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


Bearing No. 30330JR

Specification data (main dimensions, etc.)

d(mm)150
D(mm)320
T(mm)72
B(mm)65
C(mm)55
r(min.)(mm)5
r1(min.)(mm)4
Basic load ratings : Cr(kN)1050
Basic load ratings : C0r(kN)1080
Fatigue load limit : Cu(kN)129
Limiting speeds(Grease lub.)(min-1)1200
Limiting speeds(Oil lub.)(min-1)1500
Load center spread : a(mm)60.8
Constant e0.35
Axial load factors : Y11.74
Axial load factors : Y00.96

Mounting dimensions,weight (reference)

da(min.)(mm)172 mm
db(max.)(mm)193 mm
Da(max.)(mm)302 mm
da(min.)(mm)272 mm
db(min.)(mm)292 mm
Sa(min.)(mm)12 mm
Sb(min.)(mm)17 mm
ra(max.)(mm)4 mm
rb(max.)(mm)3 mm
Mass(Refer.)(kg)26.6 kg
JTEKT

2026/07/01