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


Bearing No. 4TR508

Specification data (main dimensions, etc.)

d(mm)508.000
D(mm)716.000
T(mm)528.000
W(mm)528.000
r(min.)(mm)8
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)10900
Basic load ratings : C0r(kN)26300
Fatigue load limit : Cu(kN)2200
Axial load factors : Y2(mm)1.95
Axial load factors : Y32.90
Axial load factors : Y01.91
Constant e0.35

Mounting dimensions,weight (reference)

da(min.)(mm)549 mm
Da(max.)(mm)689 mm
Da(max.)(mm)664 mm
S(min.)(mm)9.5 mm
ra(max.)(mm)8 mm
rb(max.)(mm)3.2 mm
Axial load factors : Y2(mm)1.95 mm
Axial load factors : Y32.90
Axial load factors : Y01.91
Constant e0.35
Mass(Refer.)(kg)679 kg
JTEKT

2026/07/19