Patent ID: 6408668
Filing Date: 2002-06-25
Classification: B21B

Abstract:
A supporting or intermediate roll in a rolling mill for rolling flat rolling stock, comprising: a cylindrical roll core; a tubular roll sleeve connected in a rotationally fixed manner to the roll core so as to engage coaxially around the roll core; and hydraulically axially displaceable supporting bodies arranged between the roll sleeve and the roll core so as to support the roll sleeve against the roll core, the supporting bodies being formed with at least two annular pistons which are arranged symmetrically in relation to a center of the roll and are sealed in relation to the roll core on an inside of the roll sleeve, the annular pistons have a plurality of annular supporting bearings which are arranged on an outer circumference of said pistons, are spaced apart from one another in a longitudinal direction of the roll and against which an inner surface of the roll sleeve can be positioned, the annular pistons being telescopic pistons that bear further annular pistons which can be controlled independently and on which further spaced-apart annular supporting bearings are formed so that it is possible to change spacings of the supporting bearings in relation to the support bearings arranged on other annular pistons and positions of said supporting bearings in relation to the longitudinal extent of the roll, by displacement of the annular pistons.