Lifting post

摘要

A lifting jack consists of two concentric tubes (1, 2) of different diameter with a power system sliding the tubes with respect to each other along a common longitudinal axis (4). The tubes (1, 2) are separated by a bearing (7) which is fixed to the end of one pipe. The bearing (7) consists of two parts (6, 19) with interfaces (15, 23), one width (B) of which is adjustable.