Koyo
FOR REFERENCE ONLY
  • Rolling mill roll neck bearings
  • Four-row tapered roller bearings
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Bearing No. EE931170D/250/251XD

Specifications
(Boundary 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 : Y3()3.13
Axial load factors : Y0()2.06
Constant e()0.32

Mounting dimensions

da(min.)(mm)481
Da(max.)(mm)612
Da(max.)(mm)586
S(min.)(mm)8
ra(max.)(mm)6.4
rb(max.)(mm)6.4
Axial load factors : Y2(mm)2.10
Axial load factors : Y3()3.13
Axial load factors : Y0()2.06
Constant e()0.32

Refer.

(Refer.)Mass(kg) 385
JTEKT

2025/06/01