Koyo
FOR REFERENCE ONLY
  • Rolling mill roll neck bearings
  • Four-row tapered roller bearings
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Bearing No. 82681D/20/20D

Specifications
(Boundary dimensions ...etc)

d(mm)177.800
D(mm)279.400
T(mm)234.948
W(mm)234.950
r(min.)(mm)3.2
r1(min.)(mm)1.6
Basic load ratings : Cr(kN)1780
Basic load ratings : C0r(kN)3290
Fatigue load limit : Cu(kN)373
Axial load factors : Y2(mm)1.29
Axial load factors : Y3()1.92
Axial load factors : Y0()1.26
Constant e()0.52

Mounting dimensions

da(min.)(mm)197
Da(max.)(mm)267
Da(max.)(mm)251
S(min.)(mm)6.5
ra(max.)(mm)3.2
rb(max.)(mm)1.6
Axial load factors : Y2(mm)1.29
Axial load factors : Y3()1.92
Axial load factors : Y0()1.26
Constant e()0.52

Refer.

(Refer.)Mass(kg) 52.5
JTEKT

2025/06/01