Bobst Bielefeld Gmbh

Jörg Fortmann

Alexander Sudermann

A clamping shaft () for a rotationally driven part () is described. It comprises at least one fluid chamber () being located inside a shaft body () and being delimited by a piston () and a cylinder part (). Additionally, the fluid chamber () is delimited by an elastic clamping region () having a first diameter if the piston () and the cylinder part () are in a first relative position, and a second diameter if the piston () and the cylinder part () are in a second relative position. Furthermore, a preloading unit () is provided, biasing the piston () and the cylinder part () towards the second relative position. Moreover, a printing cylinder unit () of a printing machine is presented comprising such a clamping shaft (). Also, a method for operating a clamping shaft () is explained.

Clamping shaft, printing cylinder unit and method for operating a clamping shaft

A bearing assembly () is described. It is suitable for supporting a printing cylinder or an anilox roll in a printing machine and comprises at least one roller bearing () being configured for receiving a shaft () associated with the printing cylinder or the anilox roll. Additionally, it has a first support part () carrying the roller bearing () and a second support part () being a carrier element of the printing machine or being configured for being mounted to a carrier element of the printing machine. Furthermore, a fluid chamber () is provided acting between the roller bearing () and the second support part (). Moreover, a printing machine is presented wherein a shaft () associated with a printing cylinder or an anilox roll thereof is supported by such a bearing assembly ().

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Herford, Germany

Jörg Fortmann