Koyo
FOR REFERENCE ONLY
  • Rolling mill roll neck bearings
  • Four-row tapered roller bearings


Bearing No. 4TR620

Specification data (main 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 : Y33.15
Axial load factors : Y02.07
Constant e0.32

Mounting dimensions,weight (reference)

da(min.)(mm)661 mm
Da(max.)(mm)778 mm
Da(max.)(mm)756 mm
S(min.)(mm)14 mm
ra(max.)(mm)4 mm
rb(max.)(mm)2 mm
Axial load factors : Y2(mm)2.12 mm
Axial load factors : Y33.15
Axial load factors : Y02.07
Constant e0.32
Mass(Refer.)(kg)474 kg
JTEKT

2026/07/07