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


Bearing No. 4TR708B

Specification data (main dimensions, etc.)

d(mm)708.025
D(mm)930.275
T(mm)565.150
W(mm)565.150
r(min.)(mm)6.4
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)14700
Basic load ratings : C0r(kN)40300
Fatigue load limit : Cu(kN)3100
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)753 mm
Da(max.)(mm)906 mm
Da(max.)(mm)878 mm
S(min.)(mm)11 mm
ra(max.)(mm)6.4 mm
rb(max.)(mm)3.2 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)1050 kg
JTEKT

2026/07/19