This article introduces the basic principle of keyed propeller fitting,analyses and calculates the required axial amount of indentation, and gives the specific operating procedure of hydraulic fitting in detail to communicate with colleagues.

The typical fixing modes are presented.

Its dynamic characteristic and the relationship s between the active force of the actuator and the parameters of the passive iso lator under different installation method for the actuator were analyzed .

This paper studies the dynamic characteristic of two layer active vibration isolation system of the power plant and the influencing relationships between the active force of actuator and the parameters of passive isolator under the different installation way of the active isolation actuator.