A new addition to the PIMag line of precision positioning stages with magnetic direct drives has been announced by PI (Physik Instrumente). The compact ultra-precise V-551 motorised linear translation stage comes equipped with an integrated absolute-measuring, 2nm resolution encoder. High velocity to 500mm/sec and quick acceleration is provided by a newly developed ironless magnetic linear motor, resulting in high accuracy and smooth motion. Precision crossed roller bearings with anti-creep cage assist guarantee guiding accuracy (1 µm straightness / flatness per 100 mm).
Ironless non-cogging linear motors provide very smooth motion, and a high dynamic velocity range along with rapid acceleration. They are suited to applications where high or extremely constant velocity is required, such as optics inspection, metrology, photonics, interferometry, and semiconductor test equipment. The frictionless, zero-wear motor drives are also popular in fast automation applications, where reliability and maximum uptime are crucial. The V-551 is available with several travel ranges up to 230 mm.
Together with PI’s compact C-891 controller, the V-551 stage forms a flexible and affordable positioning system. A lower cost stage variant that swaps the absolute encoder with a high-resolution incremental encoder is also available, as well as custom designs for OEMs with higher resolution, peak force, and different travel ranges.