Compact and Precise
A typical example of such a drive is the so-called PiezoMike linear actuator N-470. The linear actuator has a motion resolution of typically 20 nm and can align optical components with utmost precision.
Powerful and Long-Term Stable
The PiezoMike linear actuator keeps a position with long-term stability, is vibration-proof and shock-resistant. It provides a holding force of >100 N and a feed force of >20 N, making it the ideal choice for “set-and-forget” applications.
The N-470 achieves its high holding and feed force and high resolution by combining a piezomotor with mechanical thread translation. When at rest, the drive is self-locking and requires no current.
PiezoMike linear actuators run a billion steps, 20 meters or turn the screw 20,000 times. PI has specified the lifetime so that after this operating time, the initial step size will decrease by a maximum of 30 %. Even after longer downtimes, the N-470 ensures a reliable start-up.