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


Bearing No. M284249D/210/210XD

Specification data (main dimensions, etc.)

d(mm)762.000
D(mm)1079.5
T(mm)787.400
W(mm)787.400
r(min.)(mm)12.7
r1(min.)(mm)4.8
Basic load ratings : Cr(kN)23900
Basic load ratings : C0r(kN)62700
Fatigue load limit : Cu(kN)4530
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)831 mm
Da(max.)(mm)1043 mm
Da(max.)(mm)998 mm
S(min.)(mm)11 mm
ra(max.)(mm)12.7 mm
rb(max.)(mm)4.8 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)2360 kg
JTEKT

2026/07/22