Tested Working Superconductor Technologies STI Hybrid 98 Cryogenic Cooler KF40 NW40 Cryocooler Cryo Cooler DIY Liquid Nitrogen
Used see photos. Resonant frequency may differ slightly from the images above. Our test setup shows a large (>200 deg C) cooling differential between the cold finger and the radiator fins.
See video of a technician starting the cooler up from room temp to cryogenic temperatures: youtube.com/watch?v=7bPH-7qvzmI
Note: for long-term use, a fan is required to carry heat load away from radiator fins. Cryocooler is the only thing included in purchase: wiring harness, variac, and temperature meter are not included in sale (if you need them, reach out and we can sell them to you separately). Do not over-drive the coolers or damage may result. We do not accept returns for parts damaged by user error.
Superconductor Technologies Hybrid 98 closed-cycle Stirling cryogenic cooler with KF/NW40 (KF40) vacuum interface; tested working. In our check it ran normally and pulled down to cryogenic temps; this platform is built to hold a cold stage in the liquid-nitrogen regime (~77 K class) for long-duration operation. Typical use cases: cooling HTS/superconducting RF filter assemblies (these units were famously used in SuperLink-style cryo filter cans), building a compact cryostat cold finger for detectors/low-noise electronics, and general cold-trap/cryopumping duties in a vacuum system (water vapor cleanup, condensables, gas capture experiments). Practical integration notes: it’s a helium closed-cycle cooler that has a resonance frequency right around 60 Hz, and the warm end needs serious heat rejection (good forced air; some people add a water jacket).
