The paper analyzes influence of kerosene medium to performance of hydraulic component and hydraulic system,puts forward feasibility and attention problem of using kerosene medium in hydraulic system of aluminium strip and foil cold rolling mill,introduces design method of using kerosene medium hydraulic system.

The fatigue failure of working roller in aluminium foil mill was ana1ysed.

The life of double-column angular contact thrust ball bearing is very lower and it was easily damaged owing to superheat on operation side of the work-roll in 2350 high speed aluminium foil mill, which was generated by oversize axial force and castastrophic non-axial load.

The influence of foil mill accuracy on strip flatness;

In practical production,it is easy to take place the fire and equipment accidents due to super temperature of work roll bearings box in aluminum cold rolling mill and foil rolling mill.