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


Bearing No. EE931170D/250/251XD

Specification data (main dimensions, etc.)

d(mm)431.800
D(mm)635.000
T(mm)355.600
W(mm)355.600
r(min.)(mm)6.4
r1(min.)(mm)6.4
Basic load ratings : Cr(kN)6780
Basic load ratings : C0r(kN)13700
Fatigue load limit : Cu(kN)1290
Axial load factors : Y2(mm)2.10
Axial load factors : Y33.13
Axial load factors : Y02.06
Constant e0.32

Mounting dimensions,weight (reference)

da(min.)(mm)481 mm
Da(max.)(mm)612 mm
Da(max.)(mm)586 mm
S(min.)(mm)8 mm
ra(max.)(mm)6.4 mm
rb(max.)(mm)6.4 mm
Axial load factors : Y2(mm)2.10 mm
Axial load factors : Y33.13
Axial load factors : Y02.06
Constant e0.32
Mass(Refer.)(kg)385 kg
JTEKT

2026/07/19