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


Bearing No. 4CR420A

Specification data (main dimensions, etc.)

d(mm)420
D(mm)600
B(mm)440
C(mm)440
Fw(mm)470
r(min.)(mm)5
r1(min.)(mm)5
Basic load ratings : Cr(kN)7780
Basic load ratings : C0r(kN)17700
Fatigue load limit : Cu(kN)1670

Mounting dimensions,weight (reference)

da(min.)(mm)442 mm
Da(max.)(mm)578 mm
da(min.)(mm)560 mm
ra(max.)(mm)4 mm
rb(max.)(mm)4 mm
Mass(Refer.)(kg)420 kg
JTEKT

2026/07/19