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


Bearing No. EE641198D/265/266D

Specification data (main dimensions, etc.)

d(mm)501.650
D(mm)673.100
T(mm)387.350
W(mm)400.050
r(min.)(mm)6.4
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)7150
Basic load ratings : C0r(kN)17300
Fatigue load limit : Cu(kN)1550
Axial load factors : Y2(mm)2.15
Axial load factors : Y33.20
Axial load factors : Y02.10
Constant e0.31

Mounting dimensions,weight (reference)

da(min.)(mm)538 mm
Da(max.)(mm)650 mm
Da(max.)(mm)628 mm
S(min.)(mm)9.5 mm
ra(max.)(mm)6.4 mm
rb(max.)(mm)3.2 mm
Axial load factors : Y2(mm)2.15 mm
Axial load factors : Y33.20
Axial load factors : Y02.10
Constant e0.31
Mass(Refer.)(kg)386 kg
JTEKT

2026/07/22