Pole pipe for actuator device used in axial piston machine for mobile hydraulic drive in hydraulic hybrid power train of hybrid vehicle e.g. passenger car, has main portion that is radially and inwardly provided with coating portion

摘要

The pole pipe (24) has a main portion that is radially and inwardly provided with a coating portion, and is encapsulated with a plastic material. An extension portion of coating portion is provided constantly in radial direction. The coating portion is formed from a friction-reducing material. A metal film of pole pipe is made of nickel. An armature (8) is overlapped with the coating portion in axial direction. An independent claim is included for an actuator device.