ring actuators series R and RA motion up to 50 µm free inside diametero (9 mm to 14 mm) sub nm-resolution blocking force up to 4000 N µsec response time flexible epoxy insulation applications: micro positioning laser beam steering scanning systems for atomic force microscopes piezoelectrical pumps fiber positioning laser tuning fig.: RA 14/24 SG with including mirror fastener Piezoelectric ring actuators consist of a large number of contacted ceramic rings. Based on their design they provide a 9 mm or 14 mm free inside diameter. Those make them especially suitable for integration into the laser beam line. Ring actuators are available with housing, series RA, and without housing, series R. The R series of actuators are not pre-loaded. They are not suitable for dynamic applications. The RA series of actuators are internally preloaded by a mechanical spring making them ideal for dynamic applications. As an option actuators of the series RA, are available with strain gage sensor for motion control. . A free inside diameter makes these actuators especially suitable for all optical applications such as laser beam steering or other mechanical components. Compared with a small tube actuator the ring actuator achieves a higher stiffness and double extension. The ability to generate a large force and be subjected to high mass loading make them particularly useful for machine tools and dynamic scanning systems. Actuators with housing are always delivered with mirror fastener. Actuators without housing (Series-R) will be glued. They can be connected on the ceramic top and ground plate only. During installation and use, it is important not to subject the actuator tip to non axial forces. Actuators with housing (Series-RA) are normally fastened with screws or clamps to the bottom plate. They can also be assembled on housing directly. Please avoid tensile forces greater than the given preload!

technical data: ring actuators without casing and without preload series R motion open loop (±10%)* resolution open loop*** blocking force voltage range technical data: ring actuators with casing and with preload series RA motion open loop (±10%)* resolution open loop *** resonant frequency blocking force voltage range cable length spanner flats weight series RA with integrated measurement system motion closed loop (±0.2%) resolution closed loop cable length m * typical value measured with NV 40/1 CLE amplifier. ** typical value for small electrical field strength. *** the resolution is only...