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


Bearing No. EE243193D/250/251D

Specification data (main dimensions, etc.)

d(mm)489.026
D(mm)634.873
T(mm)320.675
W(mm)320.675
r(min.)(mm)3.2
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)4870
Basic load ratings : C0r(kN)13200
Fatigue load limit : Cu(kN)1170
Axial load factors : Y2(mm)1.97
Axial load factors : Y32.93
Axial load factors : Y01.93
Constant e0.34

Mounting dimensions,weight (reference)

da(min.)(mm)526 mm
Da(max.)(mm)618 mm
Da(max.)(mm)595 mm
S(min.)(mm)9.5 mm
ra(max.)(mm)3.2 mm
rb(max.)(mm)3.2 mm
Axial load factors : Y2(mm)1.97 mm
Axial load factors : Y32.93
Axial load factors : Y01.93
Constant e0.34
Mass(Refer.)(kg)263 kg
JTEKT

2026/07/23