The 0/40 is a single-stage, gifford mcmahon coldhead. It is the smallest, most compact and cost effective GM coldhead in our Coolstar range, with a cooling power of 40W at 77K. It operates with our water cooled helium compressor, the K450.


  • Base Temperature (Unloaded): 30K
  • Cooling Power at 77K
    • Normal Speed (72 RPM): 42W
    • High Speed (90RPM): 57W
  • Time to Cooldown Bare Coldhead to 77K: <11 MIN
  • Increase in cooldown time for each 100G copper added: 2 MIN
  • Weight: 5.6 KG
  • Dimensions: 219 x 155 x 207 MM


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