4K Cryocoolers

First introduced in 1995, the RDK-Series 4K Gifford-McMahon Cryocoolers are the most reliable and versatile systems available in the marketplace.

SHI’s 4K Gifford-McMahon Cryocoolers are recognized as the most reliable and versatile systems available in the marketplace. They feature high cooling capacities, compact designs and are orientation-free. Models like the RDK-408D2 are the standard for MRI and other superconducting magnets. 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.

RDK-101D 4K Cryocooler Series

Standard scope of Supply

  • RDK-101D Cold Head
  • HC-4E2, CNA-11B/C or Zephyr® Compressor
  • 3 m (10 ft.) Helium Gas Lines
  • 6 m (20 ft.) Cold Head Cable
  • Tool Kit

Specifications

Specifications
Power Supply 50 Hz 60 Hz
2nd Stage Capacity1 0.1 W @ 4.2 K
1st Stage Capacity1 3.0 W @ 60 K 5.0 W @ 60 K
Minimum Temperature2 < 3.0 K
Cooldown Time to 4.2 K2 150 Minutes
Weight 7.2 kg (15.9 lbs.)3
Maintenance 10,000 Hours
  • 1.With HC-4E2 and Zephyr compressors, 2nd stage capacity is 0.16/0.2 W @ 4.2 K (50/60 Hz). 1st stage capacity is 3.0/5.0 W @ 45 K (50/60 Hz).
  • 2.Lowest temperature and cooldown time are for reference only. (Dependent upon ambient temperature, cooling water temperature, etc.)
  • 3.Cold Head only. Drive unit weighs 1.0 kg (2.2 lbs.)

Specifications subject to change without notice.

RDK-305D 4K Cryocooler Series

Standard scope of Supply

  • RDK-305D Cold Head
  • FA-40L/H Compressor
  • 10 m (33 ft.) Helium Gas Lines
  • 10 m (33 ft.) Cold Head Cable
  • Tool Kit

Specifications

Specifications
Power Supply 50 Hz 60 Hz
2nd Stage Capacity 0.4 W @ 4.2 K
1st Stage Capacity 15 W @ 40 K 20 W @ 40 K
Minimum Temperature1 < 3.5 K
Cooldown Time to 4.2 K1 120 Minutes
Weight 16.0 kg (35.3 lbs.)
Maintenance 10,000 Hours
  • 1.Lowest temperature and cooldown time are for reference only. (Dependent upon ambient temperature, cooling water temperature, etc.)

Specifications subject to change without notice.

RDK-205D 4K Cryocooler Series

Standard scope of Supply

  • RDK-205D Cold Head
  • CKW-21A Compressor
  • 10 m (33 ft.) Helium Gas Lines
  • 10 m (33 ft.) Cold Head Cable
  • Tool Kit

Specifications

Specifications
Power Supply 50 Hz 60 Hz
2nd Stage Capacity 0.5 W @ 4.2 K
1st Stage Capacity 3.0 W @ 50 K 4.0 W @ 50 K
Minimum Temperature1 < 3.5 K
Cooldown Time to 4.2 K1 90 Minutes
Weight 14.0 kg (30.9 lbs.)
Maintenance 10,000 Hours
  • 1.Lowest temperature and cooldown time are for reference only. (Dependent upon ambient temperature, cooling water temperature, etc.)

Specifications subject to change without notice.

RDK-408D2 4K Cryocooler Series

Standard scope of Supply

  • RDK-408D2 Cold Head
  • CSA-71A, F-50L/H, F-70L/H, CNA-61C/D or FA-70L/H Compressor
  • 6 m (20 ft.) Helium Gas Lines [10 m (33 ft.) with CNA-61C/D Compressor]
  • 6 m (20 ft.) Cold Head Cable [10 m (33 ft.) with CNA-61C/D Compressor]
  • Tool Kit

Specifications

Specifications
Power Supply 50 Hz 60 Hz
2nd Stage Capacity 1.0 W @ 4.2 K
1st Stage Capacity 40 W @ 43 K 50 W @ 43 K
Minimum Temperature1 < 3.5 K
Cooldown Time to 4.2 K1 60 Minutes
Weight 18.0 kg (39.7 lbs.)
Maintenance 10,000 Hours
  • 1.Lowest temperature and cooldown time are for reference only. (Dependent upon ambient temperature, cooling water temperature, etc.)

Specifications subject to change without notice.

RDE-412D4 4K Cryocooler Series

Standard scope of Supply

  • RDE-412D4 Cold Head
  • F-40L/H, F-50L/H, FA-40L/H or CSA-71A Compressor
  • 20 m (66 ft.) Helium Gas Lines
  • 6-20 m (20-66 ft.) Cold Head Cable
  • Tool Kit

Specifications

Specifications
Power Supply 50 Hz 60 Hz
2nd Stage Capacity1 1.25 W @ 4.2 K
1st Stage Capacity1 53 W @ 43 K 60 W @ 43 K
Minimum Temperature2 < 3.5 K
Cooldown Time to 4.2 K2 60 Minutes
Weight 20 kg (44.1 lbs.)
Maintenance 10,000 Hours
  • 1.With F-40 and FA-40 compressors, 2nd stage capacity is 1.0 W @ 4.2 K (50/60 Hz). 1st stage capacity is 42/48 W @ 43 K (50/60 Hz).
  • 2.Lowest temperature and cooldown time are for reference only. (Dependent upon ambient temperature, cooling water temperature, etc.)

Specifications subject to change without notice.

RDE-415D 4K Cryocooler Series

Standard scope of Supply

  • RDE-415D Cold Head
  • CSA-71A, F-50L/H, F-70L/H, CNA-61C/D or FA-70L/H Compressor
  • 20 m (66 ft.) Helium Gas Lines or 6 m (20 ft.) Helium Gas Lines with Buffer Tank [10 m (33 ft.) with CNA-61C/D Compressor]
  • 6 m (20 ft.) Cold Head Cable [10 m (33 ft.) with CNA-61C/D Compressor]
  • Tool Kit

Specifications

Specifications
Power Supply 50 Hz 60 Hz
2nd Stage Capacity 1.5 W @ 4.2 K
1st Stage Capacity 35 W @ 50 K 45 W @ 50 K
Minimum Temperature1 < 3.5 K
Cooldown Time to 4.2 K1 60 Minutes
Weight 18.5 kg (40.8 lbs.)
Maintenance 10,000 Hours
  • 1.Lowest temperature and cooldown time are for reference only. (Dependent upon ambient temperature, cooling water temperature, etc.)

Specifications subject to change without notice.