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2-Axis RTTA (Rotary & telescopic extension) 2-Axis RTTA (Rotary & telescopic extension) 1

2-Axis RTTA (Rotary & telescopic extension)

The 2-axis RTTA provides 360° rotation and 760mm linear extension within an ultra-compact footprint. Typically <1mm deflection at full arm extension with 10N load, linear reproducibility of <0.2mm and rotational reproducibility of <0.2mm. Motorization options available.


  • 760mm extension
  • Typically <1mm deflection at full extension under 10N load
  • Rotational reproducibility <0.2mm
  • Linear reproducibility <0.2mm
  • Clean, UHV performance
  • Competitively priced compared to conventional designs

The 2-axis RTTA provides a cost-effective solution for radial distribution sample transfer applications providing arm rotation and arm extension.

A high torque magnetically-coupled MagiDrive precisely rotates the transfer arm to align with the desired chamber port. A second MagiDrive is used to drive the innovative telescopic mechanism to provide an arm extension of 760mm to transport the sample in and out of the desired satellite chamber.

The 2-axis RTTA can be motorized using stepper or SMART motors. Alternatively the RTTA can be configured to accept any standard NEMA23 motor.

Dimensional Drawings

Specification Table

Model RTTA 2-Axis
Mounting Flange CF100 152mm (6") OD CF
Min radial port flange size for arm CF100 152mm (6") OD CF
Min radial port size and clear bore required for assembly installation CF150 203mm (8") OD CF and 150mm bore
Rotation motion Unlimited manual and +/-180° motorized
Minimum chamber ID 630mm
Minimum chamber free height 102mm
Arm extension 760mm
Arm extension from port of 630mm ID chamber 688mm*
Arm stiffness at full extension Typically <1mm deflection for 10N load
Rotational reproducibility 0.2mm at full extension
Bakeout temperature 250°C (with motors removed)

* Contact us for detailed drawings, STEP files and installation guidance.

RTTA - Radial Telescopic
Transfer Arm Demo
Click to view a video demonstration of how the RTTA - Radial Telescopic Transfer Arm works.
Product Datasheet
Click for downloadable datasheets on the RTTA 2-Axis.
Manipulation and Motion FAQ
Click here for answers to some of the most common questions we are asked.
Contact Us
Contact Us
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