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


Bearing No. M280249D/210/210XD

Specification data (main dimensions, etc.)

d(mm)603.250
D(mm)857.250
T(mm)622.300
W(mm)622.300
r(min.)(mm)6.4
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)15500
Basic load ratings : C0r(kN)38500
Fatigue load limit : Cu(kN)3020
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)652 mm
Da(max.)(mm)833 mm
Da(max.)(mm)788 mm
S(min.)(mm)12 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)1170 kg
JTEKT

2026/07/19