Guided linear motion

Magnetically-coupled push pull devices providing linear guided motion solutions for low-load applications in high vacuum and ultra-high vacuum provided on CF16 flange as standard with strokes from 50mm to 300mm. Manual, pneumatic and motorised actuation options with additional switches to prevent over-travel and aid system interlocks are available.
 

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The MPPL provides internally-guided linear motion of the vacuum shaft, guaranteeing rotation-free motion. Furthermore, the high axial thrust coupling produces no torque and so external rotation of the thimble does not apply a rotational force internally, ensuring smooth 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.
The MPPL provides a simple and intrinsically safe alternative to bellows push pull systems. Utilising UHV Design’s magnetic coupling technology the magnetic push pull removes the need for edge-welded bellows stacks, incorporated within traditional push pull designs. Their elimination maximises vacuum integrity, providing a robust, cost-effective solution. Also, unlike a bellows-sealed device, the MPPL is not subject to the thrust due to vacuum, resulting in smooth, free-moving operation.