Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. 9185/21

Specifications
(Boundary dimensions ...etc)

d(mm)68.262
D(mm)152.400
T(mm)47.625
B(mm)46.038
C(mm)31.750
r(min.)(mm)3.6
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)306
Basic load ratings : C0r(kN)278
Fatigue load limit : Cu(kN)38.3
Limiting speeds(Grease lub.)(min-1)2700
Limiting speeds(Oil lub.)(min-1)3600
Load center spread : a(mm)44.5
Constant :e()0.66
Axial load factors : Y1()0.91
Axial load factors : Y0()0.50

Mounting dimensions

da(mm)94.0
db(mm)81.5
Da(mm)130.0
Db(mm)145.0
ra(max.)(mm)3.6
rb(max.)(mm)3.2

Refer.

(Refer.)Mass(kg) 3.87
JTEKT

2025/06/01