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


Bearing No. 4TR580

Specification data (main dimensions, etc.)

d(mm)580
D(mm)770
T(mm)510
W(mm)510
r(min.)(mm)4
r1(min.)(mm)1.5
Basic load ratings : Cr(kN)11000
Basic load ratings : C0r(kN)29600
Fatigue load limit : Cu(kN)2410
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)618 mm
Da(max.)(mm)752 mm
Da(max.)(mm)723 mm
S(min.)(mm)12 mm
ra(max.)(mm)3 mm
rb(max.)(mm)1.5 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)671 kg
JTEKT

2026/07/19