Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. 539/532X

Specifications
(Boundary dimensions ...etc)

d(mm)53.975
D(mm)107.950
T(mm)36.512
B(mm)36.957
C(mm)28.575
r(min.)(mm)3.6
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)172
Basic load ratings : C0r(kN)172
Fatigue load limit : Cu(kN)26.8
Limiting speeds(Grease lub.)(min-1)3800
Limiting speeds(Oil lub.)(min-1)5100
Load center spread : a(mm)23.9
Constant :e()0.30
Axial load factors : Y1()2.03
Axial load factors : Y0()1.11

Mounting dimensions

da(mm)68.0
db(mm)61.0
Da(mm)94.0
Db(mm)100.0
ra(max.)(mm)3.6
rb(max.)(mm)3.2

Refer.

(Refer.)Mass(kg) 1.463
JTEKT

2025/06/01