When a hydraulic vane pump is working, which of the following is in contact with the vanes?() (1) the rotor (2) the internal surface of the housing (3) the external surface of the housing
When a hydraulic vane pump is working, which of the following is in contact with the vanes?() (1) the rotor (2) the internal surface of the housing (3) the external surface of the housing
As for a hydraulic single action vane pump, the inner wall of the stator is usually of () shape.