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Q-521 linear positioner

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A new miniaturised, piezo-driven linear positioner, the Q-521, has been introduced by Precision positioning systems specialist Physik Instrumente. Joining PI’s existing Q-Motion linear and rotary positioning solutions product line, the ultra-compact Q-521 is only 21mm wide, and comes with travel ranges of 12mm, 22mm, and 32mm.

Several options are available for the Q-521 stage series, including economical open-loop designs, low-cost closed-loop versions, and high-end feedback sensors providing 1nm resolution. Vacuum compatible stages, and UHV and a non-magnetic option are also available.

Stick-slip drive motors, lacking gears, are powered by the natural difference in the static and dynamic friction coefficients found between two surfaces. This direct linear motion drive principle reduces the number of components that can wear, making the stages more compact, reliable and cost efficient. PI stages and drives can be customised for larger production quantities, while the self-clamping motor design provides long-term, power-off, position-hold capabilities without the need for a brake.