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


Bearing No. 47T644826

Specification data (main dimensions, etc.)

d(mm)320
D(mm)480
T(mm)260
W(mm)260
r(min.)(mm)4
r1(min.)(mm)5
Basic load ratings : Cr(kN)3610
Basic load ratings : C0r(kN)6890
Fatigue load limit : Cu(kN)696
Axial load factors : Y2(mm)1.68
Axial load factors : Y32.50
Axial load factors : Y01.64
Constant e0.40

Mounting dimensions,weight (reference)

da(min.)(mm)359 mm
Da(max.)(mm)462 mm
Da(max.)(mm)437 mm
S(min.)(mm)11.5 mm
ra(max.)(mm)3 mm
rb(max.)(mm)5 mm
Axial load factors : Y2(mm)1.68 mm
Axial load factors : Y32.50
Axial load factors : Y01.64
Constant e0.40
Mass(Refer.)(kg)165 kg
JTEKT

2026/07/19