Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. JM612949/10

Specifications
(Boundary dimensions ...etc)

d(mm)70.000
D(mm)115.000
T(mm)29.000
B(mm)29.000
C(mm)23.000
r(min.)(mm)3.0
r1(min.)(mm)2.5
Basic load ratings : Cr(kN)155
Basic load ratings : C0r(kN)173
Fatigue load limit : Cu(kN)26.6
Limiting speeds(Grease lub.)(min-1)3200
Limiting speeds(Oil lub.)(min-1)4300
Load center spread : a(mm)26.2
Constant :e()0.43
Axial load factors : Y1()1.39
Axial load factors : Y0()0.77

Mounting dimensions

da(mm)83.0
db(mm)77.0
Da(mm)103.0
Db(mm)110.0
ra(max.)(mm)3.0
rb(max.)(mm)2.5

Refer.

(Refer.)Mass(kg) 1.134
JTEKT

2025/06/01