hydrocylinder

The mill comprises roll changing hydrocylinder (1), with rolling mill group (3), roll changer (2), post (4), worm wheel lifting gear (5), U-shaped frame (7), rotation ear (8) and bolt (9).

The familiar structures of loose core and ejector of hydrocylinder in injection mold were introduced. The calculating method of selecting hydrocylinder and the key points in using it were discussed.