Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. 3198/20

Specifications
(Boundary dimensions ...etc)

d(mm)28.575
D(mm)72.626
T(mm)30.162
B(mm)29.997
C(mm)23.812
r(min.)(mm)1.2
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)98.6
Basic load ratings : C0r(kN)89.3
Fatigue load limit : Cu(kN)13.3
Limiting speeds(Grease lub.)(min-1)5800
Limiting speeds(Oil lub.)(min-1)7700
Load center spread : a(mm)20.3
Constant :e()0.33
Axial load factors : Y1()1.80
Axial load factors : Y0()0.99

Mounting dimensions

da(mm)39.0
db(mm)37.0
Da(mm)61.0
Db(mm)67.0
ra(max.)(mm)1.2
rb(max.)(mm)3.2

Refer.

(Refer.)Mass(kg) 0.632
JTEKT

2025/06/01