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  • M-122 Mini Translation Stage
Aug 2007
PI (Physik Instrumente) L.P., Air Bearings and Piezo Precision MotionRequest Info
AUBURN, Mass., Aug. 27, 2007 -- The M-122 palm-top-sized precision translation stage combines small dimensions, high speeds and very high accuracy at a competitive price, according to its maker, PI (Physik Instrumente) LP. It features a space-saving, folded drive train with the servomotor and drive screw side by side.
The M-122.2DD miniature translation stage (shown to scale next to a golf ball) features a precision linear encoder and a highly efficient ball screw for high speed and accuracy.
Equipped with a noncontacting optical linear encoder and a preloaded, precision-ground ball screw, these stages can provide much higher accuracy and better repeatability than conventional stepper-motor stages or rotary encoder-equipped servomotor stages, PI said.

Features & Advantages:

  • Long travel range: 25 mm (1 in.)
  • Smallest ball-screw stage with linear encoder at 60 x 86 x 20 mm
  • Servomotor direct drive provides up to 20 mm/sec
  • Significantly better dynamic response than stepper-motor drives
  • 0.1-µm resolution optical linear encoder for higher linearity and repeatability
  • Cross-roller bearings for high load capacity and excellent guiding accuracy
  • Recirculating ball screw has much lower friction than conventional lead screws
Pi said typical applications for the M-122 include metrology, quality assurance testing, micromachining, photonics packaging, and fiber positioning.

M-122 stages can be driven with the low-cost, networkable, C-862 Mercury servomotor controller/driver. For multiaxis applications, the C-843 PC board is available, PI said.

The stages can be combined to form very compact XY and XYZ systems. Due to its low-friction, the backlash-free ball screw yields significantly higher mechanical efficiency than lead screws, and allows maintenance-free, high duty-cycle operation at high velocities -- up to 20 mm/sec, according to the company.

For more information, visit:; e-mail:

PI (Physik Instrumente) LP
16 Albert St.
Auburn, MA 01501
Phone: (508) 832-3456
Fax: (508) 832-0506


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The science of measurement, particularly of lengths and angles.
The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
A type of motor that acts as the control element in a servomechanism. It is powered by an amplifier circuit and drives the load with linear or rotary motion.
translation stage
A small optical mounting platform that is usually mobile on ball bearings and can be driven manually or by motor to provide precision movement along two axes.
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