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Types HP (motor code) kW Displacement at 50 Hz (1450 rpm) m³/h Former types
EX-HG88e/2735-4 3G HC 70 50 237.9 EX-HG8/2830-4 3G HC
EX-HG88e/2735-4 S 3G HC 80 60 237.9 EX-HG8/2830-4 S 3G HC
HG HC ATEX Compressors 3G (zone 2)

Bock also offers semi-hermetic compressors certified according to ATEX machine category 3.

Within the European Union, electrical and mechanical machinery operated in explosive atmospheres must comply with the so-called ATEX (ATmospheres EXplosibles) conditions.

The models in the HG Series are the basic compressors for ATEX versions.

The varieties

ATEX Classification
- European explosion protection marking as per directive 2014/34/EU
- Machine group II
- Category 3 > zone 2 for use in explosive atmosphere caused by gas
- Explosion sub-group IIC or IIB
- Compressor rated for temperature class T3 (max. 200°C)