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


Bearing No. 30324JR

Specification data (main dimensions, etc.)

d(mm)120
D(mm)260
T(mm)59.5
B(mm)55
C(mm)46
r(min.)(mm)4
r1(min.)(mm)3
Basic load ratings : Cr(kN)712
Basic load ratings : C0r(kN)714
Fatigue load limit : Cu(kN)89.9
Limiting speeds(Grease lub.)(min-1)1500
Limiting speeds(Oil lub.)(min-1)2000
Load center spread : a(mm)50.2
Constant e0.35
Axial load factors : Y11.74
Axial load factors : Y00.96

Mounting dimensions,weight (reference)

da(min.)(mm)138 mm
db(max.)(mm)152 mm
Da(max.)(mm)246 mm
da(min.)(mm)221 mm
db(min.)(mm)239 mm
Sa(min.)(mm)10 mm
Sb(min.)(mm)13.5 mm
ra(max.)(mm)3 mm
rb(max.)(mm)2.5 mm
Mass(Refer.)(kg)14.5 kg
JTEKT

2026/07/06