4K Cryocoolers

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.

Specifications
Cold Head Model RDK-101D RDK-305D RDK-205D RDK-408D2 RDK-415D
1st Stage Capacity 50 Hz 3.0 W @ 60 K 15 W @ 40 K 3.0 W @ 50 K 40 W @ 43 K 35 W @ 50 K
60 Hz 5.0 W @ 60 K 20 W @ 40 K 4.0 W @ 50 K 50 W @ 43 K 45 W @ 50 K
2nd Stage Capacity 50 Hz 0.1 W @ 4.2 K 0.4 W @ 4.2 K 0.5 W @ 4.2 K 1.0 W @ 4.2 K 1.5 W @ 4.2 K
60 Hz 0.1 W @ 4.2 K 0.4 W @ 4.2 K 0.5 W @ 4.2 K 1.0 W @ 4.2 K 1.5 W @ 4.2 K
Minimum Temperature1 <3.0 K <3.5 K <3.5 K <3.5 K <3.5 K
Cooldown Time1 50 Hz <150 <120 <90 <60 <60
60 Hz <150 <120 <90 <60 <60
Weight 7.2 kg
(15.9 lbs.)2
16.0 kg
(35.3 lbs.)
14.0 kg
(30.9 lbs.)
18.0 kg
(39.7 lbs.)
18.5 kg
(40.8 lbs.)

Specifications subject to change without notice.

Note: “RDK” prefix denotes individual cryocoolers, while “SRDK” prefix denotes a complete system. For example, SRDK-415D-A71A is the complete model number for an RDK-415D Cold Head with a CSA-71A Compressor.

1 For reference only. Refer to individual performance specifications.
2 Cold head weight only. Refer to individual performance specifications for weights of additional parts.

Options
Compressor Options
RDK-101D RDK-305D RDK-205D RDK-408D2 RDK-415D
CKW-21A
F-50
F-70
CNA-11
CNA-31
CSA-71
CNA-61

Service and Support

With product service centers located in strategic locations around the world, we can offer the fastest turnaround to our customers while lowering your shipping costs.

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