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Sample Manipulation & Motion

MPP Series

The MPP 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 conflict with the mechanism.

MPPL Series

The MPPL provides internally guided linear motion of the vacuum shaft guaranteeing rotation- free motion.

MPPRL Series

The MPPRL provides linear and rotary motion of the vacuum shaft.


The range provides a simple and intrinsically safe alternative to bellows push pull systems. Utilizing magnetic coupling technology the Magnetic Push Pull removes the need for edge-welded bellows 'stacks', incorporated within traditional 'push/pull' designs. Their elimination maximizes vacuum integrity, providing a robust, cost effective solution. Also, unlike a bellows-sealed device, the range is not subject to the thrust due to vacuum, resulting in smooth, free-moving operation.

The range can be actuated manually, pneumatically or motorized with DC or stepper motors. Additionally, switches can be provided to prevent over-travel and to aid system interlocks.

Coupling Technology

The Magnetic Push Pull series benefits from a high power-to-size ratio, inherited from coupling technology pioneered by UHV Design for the 'PowerProbe' sample transfer arms. The result is a rigid linear coupling with over 90N (20 lbf) linear thrust and torque in excess of 0.4Nm (0.29 lbft), as seen in the graphs below.

Contact Us - Linear Positioners - Magnetically Coupled