4 K Cryocoolers — SHI 0.5 W Compressor Unit

The Sumitomo CKW-21A compressor is compatible with the 0.5 W cold head system (Model RDK-205D). It is equipped with casters for ease of transport.

Standard configuration


Input power cable5 m
Flexible gas lne10 m supply and return
Cold head power cable6 m
Water connector3/8 NPT male for 1/2 (ID) hose
RDK205 mechanical drawing RDK205D typical load map 60 Hz RDK205D typical load map 50 Hz
Janis — a Lake Shore Company
CKW-21A helium compressor

Compressor Unit Model CKW-21A Specifications

Minimum flow rate200 L/h
Temperature range4 to 28 °C
Electrical powerAC 200 V, 3-phase
Electrical power consumptionSteadyMaximum
50 Hz     2.8 kW3.3 kW
60 Hz     3.4 kW3.7 kW
WeightApproximately 100 kg
Dimension400 D × 450 L × 461 H (mm)

Specifications are subject to change without notice.