The robust choice
Ring type actuators based on a hollow cylindrical design. Compared with stack type actuators, ring actuators have a higher bending stability, better heat management efficiency and allow access to the systems axis. Given the same volume of PZT material, a ring actuator has a larger total diameter, which results in increase in stability against bending and buckling forces applied to the actuator. Their overall larger surface also removes heat quicker from the system, which allows them to run at much higher frequencies then stack type actuators can achieve without overheating. The hpower ring Series is offered with or without preload, and optional casing.
Our ring actuators can achieve a motion range of 0µm - 130µm, while generating maximum forces of up to 35kN.
The hpower rings can be customized with low temperature modification, thermostability and cooling options and even an axial cable exit, giving you more freedom and flexibility with your application design.