HYDRAULIC PISTON CONSISTING OF ROLLED SHEET METAL, METHOD FOR PRODUCING THE SAME AND AN INTERMEDIATE PRODUCT OBTAINED BY SAID METHOD

摘要

The invention relates to a tumbler-shaped hydraulic piston (10) consisting of rolled sheet metal, comprising an open end (12), a lateral wall (16) with a cylindrical external surface (18) and an internal surface (22), in addition to a piston base (14). The external surface (18) of the lateral wall (16) is provided with an annular groove (20) in a section that adjoins the open end (12). To ensure a light construction that is highly stable and easy to produce, the part of the internal surface (22) adjoining the open end (12) and extending axially beyond the annular groove (20) is cylindrical and the thickness of the lateral wall (16) reduces from the section (24) of the internal surface (22) to the piston base (14) in a uniform manner.