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


Bearing No. 47T644434

Specification data (main dimensions, etc.)

d(mm)320
D(mm)440
T(mm)335
W(mm)335
r(min.)(mm)2
r1(min.)(mm)2.5
Basic load ratings : Cr(kN)3850
Basic load ratings : C0r(kN)8750
Fatigue load limit : Cu(kN)877
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)341 mm
Da(max.)(mm)430 mm
Da(max.)(mm)408 mm
S(min.)(mm)5.5 mm
ra(max.)(mm)2 mm
rb(max.)(mm)2 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)149 kg
JTEKT

2026/07/19