Rotary Vacuum Feedthrough

Product Features
  • UHV compatible
  • Rated for continuous rotation at up to 1,200 RPM
  • Estimated lifetime of at least 2,000 hours (with balanced 100g load)
  • Rated for bakeout at up to 150° C


The NEC magnetic coupled rotary feedthrough is ideal for applications requiring the transmission of high speed rotary motion into ultra-high vacuum environments. It is used to measure beam cross sectional shape.



The NEC rotary feedthrough consists of two magnets on opposite sides of a stainless steel plate. Ultra high vacuum compatible ball bearings supply support for a rotating shaft in the vacuum volume. There is no physical break across the vacuum barrier. It is designed to support a torque of 10 in-oz.

This feedthrough mechanism is very similar to the rotary feedthrough used on the NEC Beam Profile Monitor (BPM), which is used to turn a wire through an ion beam.

Related Documents
Rotary Feedthrough