Miniature Rotary Tables – High Resolution Rotation Stages

The continuous need for miniaturization in industry and research requires smaller precision motorized rotation stages for many alignment applications in optics, photonics and medical design. Motorized miniature rotary stages from PI are available with different motor drive principles to suit various requirements. For the smallest size, closed-loop piezo motors are integrated into the miniature rotation stages. These direct-drive motors provide high speed and repeatability and are free of backlash. A direct measuring encoder for position feedback is integrated in the miniature rotary table body for high position accuracy. Depending on the technology used, table diameters are as small as 18.5mm. The more traditional mini rotation stages use stepper motors and closed-loop servo motors driving the rotation platform via a worm gear that increases motor torque and resolution. It also locks the rotary platform into place when the motion controller is turned off. The stepper motor rotary stages can provide resolution in the arcsecond range when driven with a micro-stepping motor controller such as the Mercury compact, low cost single axis stepper motor controller.

Miniature Precision Stepper Motor Rotary Stages and Motorized Closed-Loop Servo Rotation Stages

DT-34 Small Rotation Stage
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DT-34 Small Rotation Stage
Worm Gear, Servo & Stepper
  • 10mm aperture, 20mm turn table
  • 700µrad min. inc. motion
  • 195-675°/sec max. velocity
  • 1.5kg load 
RS-40 Small Rotation Stage
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RS-40 Small Rotation Stage
Worm Gear, Servo & Stepper
  • 20mm aperture, 34mm turn table
  • 87µrad min. inc. motion
  • 7°/sec max. velocity
  • 2kg load 
DT-80 Small Rotation Stage
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DT-80 Small Rotation Stage
Worm Gear, Servo & Stepper
  • 40mm aperture, 64mm turn table
  • 70µrad min. inc. motion
  • 40°/sec max. velocity
  • 2kg load 

Miniature Precision Motorized Rotary Stages with Direct Drive Piezo Motor

U-651 Low Profile Ultrasonic Motor Stage
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U-651 Low Profile Ultrasonic Motor Stage
Direct Drive, Direct Encoder
  • 36mm aperture, 110mm turn table, 14mm height
  • 12-27µrad min. inc. motion
  • 540°/sec max. velocity
  • 2kg load
  • Ultrasonic motor, self locking
The U-628 ultrasonic-motor-driven small rotation stage provides high velocity to 720°/second. It is equipped with an optical, direct metrology encoder, and due to its self-clamping motor design, boasts very high position stability.
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U-628 Miniature Ultrasonic Motor Stage
Direct Drive, Direct Encoder
  • 7mm aperture, 50mm turn table, 19mm height
  • 51µrad min. inc. motion
  • 720°/sec max. velocity
  • 0.5kg load
  • Ultrasonic motor, self locking
With Ø30mm and Ø20mm, respectively the U-624 and U-622 are even more compact versions of the U-628 rotary stage.
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U-624 Miniature Ultrasonic Motor Stage
Direct Drive, Direct Encoder
  • 28.5mm turn table, 12mm height
  • 105µrad min. inc. motion
  • 720°/sec max. velocity
  • 0.1kg load
  • Ultrasonic motor, self locking
With Ø30mm and Ø20mm, respectively the U-624 and U-622 are even more compact versions of the U-628 rotary stage.
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U-622 Miniature Ultrasonic Motor Stage
Direct Drive, Direct Encoder
  • 18.5mm turn table, 10mm height
  • 525µrad min. inc. motion
  • 720°/sec max. velocity
  • 0.03kg load
  • Ultrasonic motor, self locking
The Q-600 series of miniature rotary stages are based on the stick-slip motor principle. The Q-632, a 32mm stage, boasts an ultra-low profile of only 7mm.
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Q-632 Q-Motion® Miniature Rotation Stage
Inertia Motor, Direct Encoder
  • 30mm turn table, 10mm height
  • 3µrad min. inc. motion
  • 45°/sec max. velocity
  • 0.1kg load
  • Piezo inertia motor, self locking

Related Products and Additional Resources