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The new 6-cylinder GEA Bock HG56e compressor

Date: 10 March 2016

With the GEA Bock HG56e series, it is a case of entirely new compressors – these combine state-of-the-art technology with the GEA design features that have been proven for decades. These replace the previous 4-cylinder series, the HG5 and also partly the HG6. Compared to their predecessors, the new 6-cylinder compressors offer an even higher level of efficiency as well as greater quietness during operation. With the HG56e series, three sizes cover the range from 73.8 m³/h to 100.4 m³/h displacement (at 50 Hz).


A modern valve plate system, the latest generation of electric motors and an improved gas flow in the compressor increase the overall level of efficiency. The proven oil pump lubrication is used in all compressors, and this enables a greater range of speed control to be achieved in the operation of the frequency converter. The emergency running properties have also been optimised - this is particularly important for operation with natural refrigerants. As usual, ease of servicing was one of the main priorities in the development of the new HG56e compressors: the stators can be changed on site without special tools.