Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. 399A/394A

Specifications
(Boundary dimensions ...etc)

d(mm)68.262
D(mm)110.000
T(mm)22.000
B(mm)21.996
C(mm)18.824
r(min.)(mm)2.4
r1(min.)(mm)1.2
Basic load ratings : Cr(kN)109
Basic load ratings : C0r(kN)116
Fatigue load limit : Cu(kN)17.7
Limiting speeds(Grease lub.)(min-1)3400
Limiting speeds(Oil lub.)(min-1)4500
Load center spread : a(mm)21.3
Constant :e()0.40
Axial load factors : Y1()1.49
Axial load factors : Y0()0.82

Mounting dimensions

da(mm)78.0
db(mm)74.0
Da(mm)101.0
Db(mm)104.5
ra(max.)(mm)2.4
rb(max.)(mm)1.2

Refer.

(Refer.)Mass(kg) 0.752
JTEKT

2025/06/01