Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. JM207049/10

Specifications
(Boundary dimensions ...etc)

d(mm)55.000
D(mm)95.000
T(mm)29.000
B(mm)29.000
C(mm)23.500
r(min.)(mm)1.6
r1(min.)(mm)2.8
Basic load ratings : Cr(kN)138
Basic load ratings : C0r(kN)150
Fatigue load limit : Cu(kN)23.0
Limiting speeds(Grease lub.)(min-1)4000
Limiting speeds(Oil lub.)(min-1)5300
Load center spread : a(mm)21.3
Constant :e()0.33
Axial load factors : Y1()1.79
Axial load factors : Y0()0.99

Mounting dimensions

da(mm)64.0
db(mm)62.0
Da(mm)85.0
Db(mm)91.0
ra(max.)(mm)1.6
rb(max.)(mm)2.8

Refer.

(Refer.)Mass(kg) 0.823
JTEKT

2025/06/01