Koyo
FOR REFERENCE ONLY
  • Rolling mill roll neck bearings
  • Four-row tapered roller bearings
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Bearing No. 4TR620

Specifications
(Boundary dimensions ...etc)

d(mm)620
D(mm)800
T(mm)365
W(mm)365
r(min.)(mm)5
r1(min.)(mm)2.5
Basic load ratings : Cr(kN)8150
Basic load ratings : C0r(kN)21000
Fatigue load limit : Cu(kN)1790
Axial load factors : Y2(mm)2.12
Axial load factors : Y3()3.15
Axial load factors : Y0()2.07
Constant e()0.32

Mounting dimensions

da(min.)(mm)661
Da(max.)(mm)778
Da(max.)(mm)756
S(min.)(mm)14
ra(max.)(mm)4
rb(max.)(mm)2
Axial load factors : Y2(mm)2.12
Axial load factors : Y3()3.15
Axial load factors : Y0()2.07
Constant e()0.32

Refer.

(Refer.)Mass(kg) 474
JTEKT

2025/06/18