Supermarket refrigeration

Semi-hermetic compressors - single and two-stage

Gas and air-cooled compressors: The HG and HA series from BOCK

For more efficiency and durability in compressor and refrigeration system. For highest quality standards and reliability. The BOCK reciprocating compressors of the HG and HA series are always developed according to the latest technical standards and with a view to the environment, resource conservation and sustainability.

The HG series stands for semi-hermetic gas-cooled reciprocating compressors, the HA series stands for semi-hermetic air-cooled compressors.

BOCK HG and HA series

BENEFITS AND COMPONENTS

Here is a brief overview of the main advantages of our optimised HG and HA series with the most important components: On the following pages you will find everything you need to know about HG and HA reciprocating compressors.

Semi-hermetic compressors
BOCK compressor HG88e
BOCK compressor HG22e

Optimised compressor components

for even more performance and comfort

Optimised power unit
  • Reliable emergency operation
  • Resistance to damage caused by insufficient lubrication
  • Robust crankshaft design
  • Low friction, wear resistant plain bearings
  • Low oil throw
  • Aluminum connecting rods with high-strength piston pin bearings

 

Maintenance-free strainer
  • Easily removable oil strainer for easier maintenance and increased availability
Reliable oil supply
  • Oil pump lubrication independent of direction of rotation
  • Minimal oil throw
  • Service-friendly oil strainer
  • Oil pressure monitoring possible
  • Oil sump with large volume
  • Oil level regulator connection as standard
  • PTC oil sump heater, self-regulating for HG12 to HG34e
  • Constant heating capacity for HG44e, HG66e and HG88e
Electronic motor protection INT69 G

INT69 G Functions:

  • Motor temperature monitoring
  • Hot gas temperature monitoring (accessories)
  • Restart lockout
  • Reset function
Digital capacity control DCR14
(HG34e / HG44e / HG56e / HA34e / HA44e)
  • Digital control
  • Possibility of high switching frequency
  • Nearly stepless power regulation
  • Economical alternative to frequency converter

 

HG Mobile Webinar Image

Webinar Mobile Aluminium Compressor

Full Electric HG-Alu compressor for mobile applications

Learn everything about BOCK full electric HG compressors for synthetic and natural refrigerants in our online webinar. In the interactive presentation, we look...

Online-Webinar German

Read more
HG Mobile Webinar Image
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Webinar Mobile Aluminium Compressor

Full Electric HG-Alu compressor for mobile applications

Learn everything about BOCK full electric HG compressors for synthetic and natural refrigerants in our online webinar. In the interactive presentation, we look...

Online-Webinar English

Read more
BOCK compressor HG66e

Semi-hermetic compressors UL recognized

The BOCK UL-HG compressor series for USA and CANADA

The new UL-HGe series is a stand-alone series that incorporates all the advantages of the suction gas cooled HG series, which has been proven for decades, and...

BOCK aluminium compressor HG22e for mobile applications

ALUMINUM COMPRESSORS FOR MOBILE USE

COMPRESSORS FOR BUS, RAILROAD, AIR CONDITIONING AND TRANSPORT COOLING OF THE HG-SERIES

Suction gas cooled aluminum reciprocating compressors from BOCK, based on the classic HG compressor series in grey cast iron, are specially designed for mobile...

BOCK two-stage compressor HGZ7

Semi-hermetic compressors, two-stage gas-cooled HGZ

BOCK HGZ-compressor series

Based on the HG series, BOCK has developed a two-stage compressor series for extended use in low temperature cooling. The HGZ compressor series provides a...

BOCK air-cooled compressor HA22e

Semi-hermetic compressors, single-stage - air-cooled -

The Bock HA compressor series

The semi-hermetic HA series from BOCK was specially developed for low temperature cooling and prevents excessively high final displacment temperatures. The...

BOCK compressor HG34e

semi-hermetic compressors gas-cooled

The Bock HG compressor series, single-stage & gas-cooled

The HG series is based on a classic, suction gas-cooled compressor technology according to the latest state of the art. Smooth running, service-friendliness,...

BOCK UL compressor range

Product brochure

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