Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. 387/382

Specifications
(Boundary dimensions ...etc)

d(mm)57.150
D(mm)98.425
T(mm)21.000
B(mm)21.946
C(mm)17.826
r(min.)(mm)2.4
r1(min.)(mm)0.8
Basic load ratings : Cr(kN)101
Basic load ratings : C0r(kN)101
Fatigue load limit : Cu(kN)15.3
Limiting speeds(Grease lub.)(min-1)3900
Limiting speeds(Oil lub.)(min-1)5200
Load center spread : a(mm)17.4
Constant :e()0.35
Axial load factors : Y1()1.69
Axial load factors : Y0()0.93

Mounting dimensions

da(mm)66.0
db(mm)62.0
Da(mm)89.0
Db(mm)92.0
ra(max.)(mm)2.4
rb(max.)(mm)0.8

Refer.

(Refer.)Mass(kg) 0.651
JTEKT

2025/05/12