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


Bearing No. 32052JR

Specification data (main dimensions, etc.)

d(mm)260
D(mm)400
T(mm)87
B(mm)87
C(mm)65
r(min.)(mm)5
r1(min.)(mm)4
Basic load ratings : Cr(kN)1470
Basic load ratings : C0r(kN)2170
Fatigue load limit : Cu(kN)221
Limiting speeds(Grease lub.)(min-1)770
Limiting speeds(Oil lub.)(min-1)1000
Load center spread : a(mm)85.0
Constant e0.43
Axial load factors : Y11.38
Axial load factors : Y00.76

Mounting dimensions,weight (reference)

da(min.)(mm)282 mm
db(max.)(mm)287 mm
Da(max.)(mm)382 mm
da(min.)(mm)352 mm
db(min.)(mm)383 mm
Sa(min.)(mm)14 mm
Sb(min.)(mm)22 mm
ra(max.)(mm)4 mm
rb(max.)(mm)3 mm
Mass(Refer.)(kg)39.5 kg
JTEKT

2026/07/05