Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. A4059/138

Specifications
(Boundary dimensions ...etc)

d(mm)14.989
D(mm)34.988
T(mm)10.998
B(mm)10.988
C(mm)8.730
r(min.)(mm)0.8
r1(min.)(mm)1.2
Basic load ratings : Cr(kN)15.7
Basic load ratings : C0r(kN)11.9
Fatigue load limit : Cu(kN)1.55
Limiting speeds(Grease lub.)(min-1)12000
Limiting speeds(Oil lub.)(min-1)17000
Load center spread : a(mm)8.3
Constant :e()0.45
Axial load factors : Y1()1.33
Axial load factors : Y0()0.73

Mounting dimensions

da(mm)19.5
db(mm)19.0
Da(mm)29.0
Db(mm)32.0
ra(max.)(mm)0.8
rb(max.)(mm)1.2

Refer.

(Refer.)Mass(kg) 0.051
JTEKT

2025/05/11