The motion of the piezoceramic actuator is based on crystalline effects and is not subject to any wear. Unlike other piezomotor principles, the coupling of the piezo actuators to the runner is not subject to sliding friction effects; the feed is achieved by the physical clamping and lifting of the actuators.
PICMAWalk drives have already proved their endurance over 100 km continuous running under load (standard test environment under normal atmospheric conditions).