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


Bearing No. 78FC55400AW

Specification data (main dimensions, etc.)

d(mm)390
D(mm)550
B(mm)400
C(mm)400
Fw(mm)434
r(min.)(mm)5
r1(min.)(mm)SP
Basic load ratings : Cr(kN)5510
Basic load ratings : C0r(kN)12400
Fatigue load limit : Cu(kN)1190

Mounting dimensions,weight (reference)

da(min.)(mm)410 mm
Da(max.)(mm)528 mm
da(min.)(mm)510 mm
ra(max.)(mm)4 mm
rb(max.)(mm)4 mm
Mass(Refer.)(kg)296 kg
JTEKT

2026/07/07