Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. 39586/20

Specifications
(Boundary dimensions ...etc)

d(mm)64.986
D(mm)112.712
T(mm)30.162
B(mm)30.924
C(mm)23.812
r(min.)(mm)2.4
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)184
Basic load ratings : C0r(kN)207
Fatigue load limit : Cu(kN)32.1
Limiting speeds(Grease lub.)(min-1)3300
Limiting speeds(Oil lub.)(min-1)4500
Load center spread : a(mm)23.3
Constant :e()0.34
Axial load factors : Y1()1.77
Axial load factors : Y0()0.97

Mounting dimensions

da(mm)76.0
db(mm)72.0
Da(mm)101.0
Db(mm)107.0
ra(max.)(mm)2.4
rb(max.)(mm)3.2

Refer.

(Refer.)Mass(kg) 1.2
JTEKT

2025/06/01