Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. JM205149/10

Specifications
(Boundary dimensions ...etc)

d(mm)50.000
D(mm)90.000
T(mm)28.000
B(mm)28.000
C(mm)23.000
r(min.)(mm)3.0
r1(min.)(mm)2.5
Basic load ratings : Cr(kN)132
Basic load ratings : C0r(kN)138
Fatigue load limit : Cu(kN)21.1
Limiting speeds(Grease lub.)(min-1)4300
Limiting speeds(Oil lub.)(min-1)5800
Load center spread : a(mm)20.2
Constant :e()0.33
Axial load factors : Y1()1.82
Axial load factors : Y0()1.00

Mounting dimensions

da(mm)62.0
db(mm)57.0
Da(mm)80.0
Db(mm)85.0
ra(max.)(mm)3.0
rb(max.)(mm)2.5

Refer.

(Refer.)Mass(kg) 0.751
JTEKT

2025/06/01