Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. 6461/20

Specifications
(Boundary dimensions ...etc)

d(mm)76.200
D(mm)149.225
T(mm)53.975
B(mm)54.229
C(mm)44.450
r(min.)(mm)3.6
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)357
Basic load ratings : C0r(kN)404
Fatigue load limit : Cu(kN)54.4
Limiting speeds(Grease lub.)(min-1)2700
Limiting speeds(Oil lub.)(min-1)3500
Load center spread : a(mm)39.3
Constant :e()0.36
Axial load factors : Y1()1.66
Axial load factors : Y0()0.91

Mounting dimensions

da(mm)96.0
db(mm)89.5
Da(mm)129.0
Db(mm)141.0
ra(max.)(mm)3.6
rb(max.)(mm)3.2

Refer.

(Refer.)Mass(kg) 4.25
JTEKT

2025/06/01