GM (Gifford-McMahon)


4K Cryocooler series
The RDK-305D2 two-stage Gifford-McMahon Cryocooler is one of SHI’s smaller-capacity 4K Cryocoolers, with a second-stage capacity of 0.4 W @ 4.2 K (50/60 Hz). It operates with both air and water-cooled helium compressors.

These 4K Cryocoolers can be found cooling a wide variety of analytical and experimental devices, and offer a very cost effective alternative to open-cycle liquid helium systems.

Standard Scope of Supply

  • RDK-305D2 Cold Head
  • F-40L/H or FA-40L/H Compressor
  • Helium Gas Lines – 10 m (33 ft.)
  • Cold Head Cable – 10 m (33 ft.)
  • Power Cable – 3-6 m (10-20 ft.)1 or 2-8 m (6-27 ft.)2
  • Tool Kit