MDC heavy duty linear motion feedthroughs are designed to provide controlled linear displacement of larger or heavier in-vacuum samples and components. These feedthroughs utilize a basic manual rotary actuator that does not include position indication; instead, position is verified by visual inspection of the sample or device inside the vacuum environment.

A robust heavy duty acme thread lead screw delivers 1 inch (25.4 mm) of linear travel for every six revolutions of the actuator knob, allowing for fine adjustment under load. Unlike standard feedthroughs, heavy duty models feature a reentrant welded bellows design that enhances durability and mechanical strength in demanding vacuum applications.

Constructed from high-grade UHV compatible materials, these feedthroughs are mounted using industry standard Conflat® compatible MDC metal seal flanges, ensuring reliable sealing and integration into ultra-high vacuum systems.

Industry Applications

These heavy duty feedthroughs are ideal for manipulating large vacuum samples and components in fields like materials science, surface analysis, semiconductor manufacturing, and ultra-high vacuum research. Their rugged design and reliable manual control make them well-suited for applications requiring stable, high-load linear motion within demanding vacuum environments.