Rotary drive for a hydraulic tool

摘要

A rotary drive for a hydraulic tool includes a housing; a hydraulic connection on the housing; and a rotatable hollow shaft in the housing, having an axially extending center passage duct and being connected with a nozzle carrier. A sleeve is inserted from a hydraulic connection end of the housing into the passage duct. A seal consisting of at least one separate ring seal rests in a sealing manner on the wall of the passage duct and on the sleeve. A device exerts pressure on the seal.