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


Bearing No. EE843221D/290/291D

Specification data (main dimensions, etc.)

d(mm)558.800
D(mm)736.600
T(mm)322.263
W(mm)322.263
r(min.)(mm)6.4
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)6370
Basic load ratings : C0r(kN)16100
Fatigue load limit : Cu(kN)1430
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)607 mm
Da(max.)(mm)712 mm
Da(max.)(mm)692 mm
S(min.)(mm)9.5 mm
ra(max.)(mm)6.4 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)371 kg
JTEKT

2026/07/19