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


Bearing No. 30240JR

Specification data (main dimensions, etc.)

d(mm)200
D(mm)360
T(mm)64
B(mm)58
C(mm)48
r(min.)(mm)5
r1(min.)(mm)4
Basic load ratings : Cr(kN)991
Basic load ratings : C0r(kN)1120
Fatigue load limit : Cu(kN)126
Limiting speeds(Grease lub.)(min-1)940
Limiting speeds(Oil lub.)(min-1)1200
Load center spread : a(mm)70.3
Constant e0.44
Axial load factors : Y11.38
Axial load factors : Y00.76

Mounting dimensions,weight (reference)

da(min.)(mm)222 mm
db(max.)(mm)238 mm
Da(max.)(mm)342 mm
da(min.)(mm)315 mm
db(min.)(mm)336 mm
Sa(min.)(mm)12 mm
Sb(min.)(mm)15 mm
ra(max.)(mm)4 mm
rb(max.)(mm)3 mm
Mass(Refer.)(kg)26.4 kg
JTEKT

2026/07/06