The key features of this new range of magnetic rotary drive s are:

• Vacuum enclosure machined from single piece of 316 stainless steel.
• No vacuum seals or bellows - no catastrophic leaks to atmosphere.
• Exceptional torsional rigidity.
• Zero angular backlash under low load/acceleration.
• Cannot be damaged by application of excessive torque.
• Long service life.
• Bakeable to 250°C.
• Stepper motor kit can be user-fitted in minutes.

Many vacuum processes require a sample or other component to be rotated. This can range from something as simple as spinning an attenuating chopper wheel to accurately moving a sample face from one analyzer to another.

MRD Series Magnetic Rotary Drives uses a high strength rare-earth magnetic coupling to transfer the rotational forces into the vacuum envelope. This is achieved without the use of dynamic seals or bellows. The vacuum enclosure, complete with CF flange, is machined from a single billet of material. Therefore many of the problems associated with conventional stainless steel drive bellows, such as leaks to atmosphere, are completely eliminated.

MRD Series Magnetic Rotary Drives employ high strength rare-earth magnets to give exceptional levels of torsional rigidity. However, if the recommended input torque is exceeded, the magnetic coupling will "cog" over to the next position. As there is no actual mechanical connection the drive will not be damaged. All MRD Series Magnetic Rotary Drives are extremely robust and utilize large, highly specified bearings to ensure long service life. AlL drives are fitted with magnetic shielding as standard.

MRD Series Magnetic Rotary Drives are available in both manual & motorized options. The motor kits are designed to be easily removed or replaced in minutes for bakeout purposes, and motor kits can be easily retrofitted to manual drives.

Magnetic Rotary Drives

High precision, ultra high vacuum Magnetic Rotary Drives for industry & research.
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