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


Bearing No. 30324D

Specification data (main dimensions, etc.)

d(mm)120
D(mm)260
T(mm)59.5
B(mm)55
C(mm)38
r(min.)(mm)4
r1(min.)(mm)3
Basic load ratings : Cr(kN)536
Basic load ratings : C0r(kN)512
Fatigue load limit : Cu(kN)61.5
Limiting speeds(Grease lub.)(min-1)1200
Limiting speeds(Oil lub.)(min-1)1700
Load center spread : a(mm)77.8
Constant e0.81
Axial load factors : Y10.74
Axial load factors : Y00.41

Mounting dimensions,weight (reference)

da(min.)(mm)138 mm
db(max.)(mm)145 mm
Da(max.)(mm)246 mm
da(min.)(mm)219 mm
db(min.)(mm)239 mm
Sa(min.)(mm)6 mm
Sb(min.)(mm)21 mm
ra(max.)(mm)3 mm
rb(max.)(mm)2.5 mm
Mass(Refer.)(kg)13.0 kg
JTEKT

2026/07/08