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CKW-21A Indoor Water-Cooled Compressor Series

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About the CKW-21A

The CKW-21A Compressor is SHI’s smallest three-phase compressor.  This low-volt, water cooled compressor operates at 2.7-3.3/3.5-4.0 kW (50/60 Hz), and pairs with SHI’s RDK-205D 4K two-stage Gifford-McMahon Cryocooler.


Electrical Supply13 Phase
200 V, 50/60 Hz
Power Consumption22.7-3.3 kW at 50 Hz
3.5-4.0 kW at 60 Hz
Ambient Temperature35-35 ºC (41-95 °F)
Cooling Water (Inlet)3.0-3.5 L/min.
(0.8-0.9 gal./min.)
4-28 °C (39-82 °F)
Dimensions(HxWxD)471 x 401 x 450 mm
(18.5 x 15.8 x 17.7 in.)
Weight70 kg (155 lbs.)
Maintenance20,000 Hours
1 Power may differ depending upon the cold head used.
2 Typical power consumption
3 Cooling capacity may degrade if ambient temperature is above 28 °C (82 °F).

Specifications subject to change without notice

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