MDC’s pneumatic linear motion feedthroughs are designed for fast-action, two-position motion control in vacuum environments—ideal for shutters, gates, and positioning mechanisms. These devices deliver rapid on-off, in-out, or open-close movements using a durable pneumatic actuator.

Each unit features an adjustable linear travel stop, modified via a top-end adjustment knob. The range is 0" to 1" (0 to 25.4 mm) for 1" models and 1" to 2" (25.4 to 50.8 mm) for 2" models. A jam nut secures the set position. For visual accuracy, a laser-etched graduated scale in 0.025" (0.635 mm) increments is displayed on the body, with a black anodized finish for high-contrast visibility.

Built from UHV and HV compatible materials, the design includes welded stainless steel bellows and linear bearing shaft supports for consistent, leak-tight motion. These feedthroughs are compatible with Conflat® CF flanges and ISO KF Kwik-Flange™ mounts and include an air control solenoid valve capable of up to 100 PSIG (6.9 bar) operating pressure.

Industry Applications

Ideal for in-vacuum automation, shutter actuation, sample loading, and test chambers, MDC’s pneumatic feedthroughs support applications in semiconductor fabrication, surface science, and plasma research. Their adjustable stroke, clean operation, and fast cycling performance make them a dependable choice for HV/UHV environments where speed and precision are critical.