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


Bearing No. 4TR670

Specification data (main dimensions, etc.)

d(mm)670
D(mm)960
T(mm)700
W(mm)700
r(min.)(mm)7.5
r1(min.)(mm)5
Basic load ratings : Cr(kN)19100
Basic load ratings : C0r(kN)48100
Fatigue load limit : Cu(kN)3630
Axial load factors : Y2(mm)2.03
Axial load factors : Y33.02
Axial load factors : Y01.98
Constant e0.33

Mounting dimensions,weight (reference)

da(min.)(mm)732 mm
Da(max.)(mm)924 mm
Da(max.)(mm)884 mm
S(min.)(mm)13 mm
ra(max.)(mm)6 mm
rb(max.)(mm)4 mm
Axial load factors : Y2(mm)2.03 mm
Axial load factors : Y33.02
Axial load factors : Y01.98
Constant e0.33
Mass(Refer.)(kg)1710 kg
JTEKT

2026/07/20