Linear transfer arm with rotating inner shaft

The DAPP, XDAPP & SDAPP range

Our DAPP & XDAPP range consists of high-performance magnetically coupled devices, designed for safe and efficient sample transfer. The products in this range combine linear motion (outer shaft) with independent rotary movement (inner shaft). They’re ideal for systems where a secondary motion is required to actuate an end-effector mechanism. With that in mind, this range includes end-effectors to transfer industry-standard flag and puck sample holders.

For demanding UHV applications, we recommend the XDAPP option with rolling metal & ceramic bearings. This facilitates smooth, low friction actuation with minimal outgassing.

For higher load applications we recommend the SDAPP with the larger 31.7mm diameter shaft. This includes a CF63 mounting flange as standard, with a maximum cantilevered load of 50Nm.

Key Specifications

  • Linear only main shaft motion with independent inner shaft rotation
  • Unrivalled 140N axial coupling strength (180N for the SDAPP)
  • Bakeable to 250°C without having to remove the outer magnets (DAPP and XDAPP version)
  • Exceptional axial stiffness 
  • No backlash under low load
High-performance magnetically coupled sample transfer arms.

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If you would like to discuss your project with our engineering team, please contact us.