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Heavy Duty, Tunnel Access

  • 2 to 6 inch linear travel
  • Manual actuator
  • Linear position lock
  • UHV compatible materials
  • Welded bellows seal
  • Bakeable to 100ºC
  • Del-Seal™ CF port mounts

Heavy duty tunnel access, push-pull linear motion feedthroughs allow linear displacement of heavy samples and components. The push-pull shaft is hollow providing tunnel access for instrumentation leads such as those used for thermocouple temperature measurements and other low voltage electrical applications. The vacuum nose piece is shipped with a blank 1-1/3" Del-Sealº CF mini flange which can be removed or modified to accept electrical feedthroughs as required. These devices do not provide position indication. Sample or component position must be verified visually through a viewport. Sample linear position can be fixed with an integral position lock knob mounted on the actuator housing. Unlike conventional motion feedthroughs, heavy duty models employ reentrant welded bellows construction allowing the use of sturdier and larger diameter shafts. Models with two-, four- and six-inch maximum travel are offered on 2-3/4" Conflat® compatible Del-Sealº CF metal seal flanges. 

  Flange / Actuator body 304ss / Anodized aluminum
  Shaft seal AM 350 welded bellows
 Vacuum Range  1x10-11 Torr
 Temperature Range*  -20ºC to 100ºC
 Axial load 20 lb max.
 Lateral load  20 lb @ 4" extension max.
* UHV units are bakeable to 230ºC with actuator removed. 
For conversion tables click here

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This product references the following part numbers: 667000, 667001, 667002