Please select your country or region to be
directed to the appropriate Lesker site.

Sample Manipulation & Motion

Linear Positioners - Magnetically Coupled

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