MPP - linear unguided motion

UHV Design’s MPP series

Unguided linear motion

This range of unguided linear motion solutions is ideal for low load applications in high/ultra-high vacuum. The vacuum shaft is free to rotate, avoiding possible conflict with an internal chamber mechanism. These devices are available in CF16 and CF35 flanges and six stroke lengths (from 50mm to 300mm). Includes manual, pneumatic and motorised actuation options - with additional switches to prevent over-travel.

Key Specifications

  • Unguided linear motion of the vacuum shaft
  • Vacuum shaft free to rotate
  • High power-to-size ratio
  • No bellows - smooth operation
  • No thrust due to vacuum
  • Over 90 N (20 lbf) linear thrust
  • Entire unit bakeable to 250°C
MPP - linear unguided motion

Product Downloads

Manipulate slides or pivot arms

MPPs provide linear motion of an unguided vacuum shaft (free to rotate). This is used to manipulate slides or pivot arms where a guided system may interfere with the mechanism. Please note that although the vacuum shaft is free to rotate, the MPP does not provide rotation. The range can be actuated manually, pneumatically or motorised with DC or stepper motors. Additionally, switches can be provided to prevent over-travel and to aid system interlocks.

Advanced magnetic-coupling

Utilising UHV Design’s magnetic coupling technology, this device removes the need for edge-welded bellows ‘stacks’ - usually incorporated within traditional push-pull designs. Crucially, their elimination maximises vacuum integrity, providing a robust, cost-effective solution. Unlike a bellows-sealed device, the MPP offers the additional advantage of not being subject to thrust due to vacuum. This results in a smooth, free-moving, operation.

Product configuration tool

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