Roller of a printing machine comprising a device for generating an axial oscillating movement of the rotating roller

A roller (01) for a printing press comprising:

• a roller shaft;
• a roller shell supported by said roller shaft for rotation about said roller shaft and for axial oscillating movement along said roller shaft;
• a device within said roller shell and connected to said roller shell and to said roller shaft to generate said axial oscillating movement of said rotating roller shell;
• and
• a drive (11, 12, 14, 23) for said device to generate said axial oscillating movement of said rotating roller shell, said drive including a pump (11) which is usable to place a working fluid in said pump under a working pressure, said pump (11) being situated inside said rotating roller shell of said roller (01), said pump being driven by rotation of said rotating roller shell, said working fluid placed under pressure by said pump being provided by said pump to said drive and being usable, in said drive, to actuate said device for generating said axial oscillating movement of said rotating roller shell.