Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. 13889/30

Specifications
(Boundary dimensions ...etc)

d(mm)38.100
D(mm)63.500
T(mm)12.700
B(mm)11.908
C(mm)9.525
r(min.)(mm)1.6
r1(min.)(mm)0.8
Basic load ratings : Cr(kN)32.1
Basic load ratings : C0r(kN)33.1
Fatigue load limit : Cu(kN)4.60
Limiting speeds(Grease lub.)(min-1)5800
Limiting speeds(Oil lub.)(min-1)7700
Load center spread : a(mm)11.9
Constant :e()0.35
Axial load factors : Y1()1.73
Axial load factors : Y0()0.95

Mounting dimensions

da(mm)45.0
db(mm)42.5
Da(mm)59.0
Db(mm)60.0
ra(max.)(mm)1.6
rb(max.)(mm)0.8

Refer.

(Refer.)Mass(kg) 0.149
JTEKT

2025/06/01