Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. 355A/354A

Specifications
(Boundary dimensions ...etc)

d(mm)44.450
D(mm)85.000
T(mm)20.638
B(mm)21.692
C(mm)17.462
r(min.)(mm)0.8
r1(min.)(mm)1.2
Basic load ratings : Cr(kN)89.6
Basic load ratings : C0r(kN)81.7
Fatigue load limit : Cu(kN)12.4
Limiting speeds(Grease lub.)(min-1)4600
Limiting speeds(Oil lub.)(min-1)6200
Load center spread : a(mm)15.5
Constant :e()0.31
Axial load factors : Y1()1.96
Axial load factors : Y0()1.08

Mounting dimensions

da(mm)51.0
db(mm)50.0
Da(mm)77.0
Db(mm)80.0
ra(max.)(mm)0.8
rb(max.)(mm)1.2

Refer.

(Refer.)Mass(kg) 0.504
JTEKT

2025/06/01