MPPL - linear guided motion

Our MPPL series

Smooth linear guided motion

These magnetically-coupled push-pull devices provide linear guided motion solutions. They’re perfect for low-load applications in high and ultra-high vacuums. The MPPL is provided on CF16 flange as standard, with strokes from 50mm to 300mm. Manual, pneumatic and motorised actuation options - complete with additional switches to prevent over-travel and aid system interlocks - are also available.

Key Specifications

  • Internally-guided linear motion
  • Guaranteed rotation-free motion
  • No bellows - smooth operation
  • No thrust due to vacuum
  • Over 90 N (20 lbf) linear thrust
  • Entire unit bakeable to 250°C
MPPL - linear guided motion

Product Downloads

Manual, pneumatic or motorised

The MPPL provides internally-guided linear motion of the vacuum shaft, guaranteeing rotation-free motion. Importantly, the high axial thrust coupling produces no torque. That means when the thimble rotates externally, it doesn’t apply a rotational force internally. Consequently, this functionality will always ensure the smoothest motion. 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 MPPL offers the additional advantage of not being subject to thrust due to vacuum. This results in a smooth free-moving, user-friendly operation.

Product configuration tool

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