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


Bearing No. 33028JR

Specification data (main dimensions, etc.)

d(mm)140
D(mm)210
T(mm)56
B(mm)56
C(mm)44
r(min.)(mm)2.5
r1(min.)(mm)2
Basic load ratings : Cr(kN)510
Basic load ratings : C0r(kN)758
Fatigue load limit : Cu(kN)90.9
Limiting speeds(Grease lub.)(min-1)1600
Limiting speeds(Oil lub.)(min-1)2200
Load center spread : a(mm)45.6
Constant e0.36
Axial load factors : Y11.67
Axial load factors : Y00.92

Mounting dimensions,weight (reference)

da(min.)(mm)152 mm
db(max.)(mm)152 mm
Da(max.)(mm)200 mm
da(min.)(mm)186 mm
db(min.)(mm)202 mm
Sa(min.)(mm)7 mm
Sb(min.)(mm)12 mm
ra(max.)(mm)2 mm
rb(max.)(mm)2 mm
Mass(Refer.)(kg)6.61 kg
JTEKT

2026/08/07