Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 33028JR

Specifications
(Boundary 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 e()0.36
Axial load factors : Y1()1.67
Axial load factors : Y0()0.92

Mounting dimensions

da(min.)(mm)152
db(max.)(mm)152
Da(max.)(mm)200
Da(min.)(mm)186
Db(min.)(mm)202
Sa(min.)(mm)7
Sb(min.)(mm)12
ra(max.)(mm)2
rb(max.)(mm)2

Refer.

(Refer.)Mass(kg) 6.61
JTEKT

2025/06/01