Magnetic Push-Pull Positioners (MPP Series)

Lesker Magnetic Push-Pull Positioners (MPP Series)

The Kurt J. Lesker Magnetic Push-Pull range encompasses a series of magnetically coupled "push-pull" linear and linear/rotary actuators. This compact range is specifically designed for low load applications such as specimen transfer, thermocouple 'contacting', or manual shutters. These components provide a rugged but cost-effective solution for manipulation in high or ultra high vacuum applications.

Features

• Three series offering combined linear/rotary motion, linear-only motion, and linear motion with free rotation
• Linear stroke from 50mm - 200mm max
• Rigid linear coupling with over 90N (20lbf) breakaway force
• Magnetic-coupling design eliminates the thrust due to vacuum acting on a conventional bellows-sealed arrangement
• High cycle, bellows-free design
• Compact design ensures a smaller envelope than most competitive bellows-sealed systems
• Manual, pneumatic, DC, and stepper motor actuator options
• Smooth operation
• Fully bakeable to 250° C
• Mini ConFlat^® standard mounting flange with 70mm (2.75") CF option

Three Series

MPRL (rotary and push-pull linear actuation)

• Offers a combination of linear and rotary translation to the vacuum shaft
• Utilizes a unique magnetic coupling, based on the MagiDrive™ and PowerProbe technology
• Breakaway torque in excess of 0.4Nm and over 90N linear thrust before coupling separation

MPL (push-pull linear-only translation)

• Offers linear-only translation of the vacuum shaft, which is guided internally, guaranteeing rotation-free motion.
• 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.
• This range can be actuated manually, pneumatically, or motorized. Additionally, switches can be provided to prevent over-travel and to aid system interlocks.

MP (push-pull linear translation with freely rotating shaft)

• Offers linear actuation of an unguided vacuum shaft
• Used to manipulate slides or pivot arms where a guided system may conflict with the mechanism (please note, though the vacuum shaft is free to rotate the drive does not provide rotation)
• This range can be actuated manually, pneumatically, or motorized. Additionally, switches can be provided to prevent over-travel and to aid system interlocks.

Lesker Magnetic Push-Pull Positioners (MPP Series)