Semi-hermetic aluminium compressors for mobile use

Overview
Software
Related applications
Learning

Innovative HG-series compressors: Lightweight solutions for mobile cooling

Danfoss BOCK®'s HG-series aluminum compressors are ideal for mobile refrigeration. They're 40% lighter, low-profile for vehicle roofs, and feature a robust K-design valve plate for bus air conditioning and electric applications.

They handle large inclination angles of the vehicle with special oil management, and the K valve plate has a proven track record in vehicle applications.

Features and benefits of HG compressors for mobile use

Lightweight design thanks to the all-aluminum construction, enhancing mobility and efficiency.

Increased performance: The 2-pole version offers a significant performance gains and improved capabilities for various applications.

Space-efficient: these compressors feature a compact design with a reduced-height terminal box, making them ideal for space-constrained environments.

Enhanced safety: BOCK® mobile aluminum compressors meet EN45545's highest fire protection class HL3, ensuring top-tier safety for railway air-conditioning systems.

Available for R134a, R513A, R452A, R1234yf, R290, as well as R404A, R407A/C/F.

Product features (quick overview)

Available as 2- and 4-cylinder compressors in cast iron or all-aluminum lightweight construction
Semi-hermetic compressors with 2-pole drive motor:
Based on the HG standard compressors with their outstanding advantages and features, versions with 2-pole drive motor are available with up to 70% increased cooling capacity with the same external dimensions. This is made possible by doubling the speed at the same mains frequency. Together with the robust and reliable BOCK® K valve plate, this results in the optimal solution for bus air conditioning and many other mobile applications.
Lightweight aluminum construction 40% lighter than cast iron version
Power control also possible digitally in wide bandwidth
Reliable and efficient reciprocating piston technology with optimized valve plate system and low oil throw
Highly efficient 4-pole and 2-pole electric motors
Wear-resistant and durable power unit

Unique benefits

Powerful and compact 2-pole drive motor (2,900 1/min - 50 Hz)
Reduced overall height (300 mm) with optional terminal box
Lockable metal terminal box for access restriction
Terminal blocks with enhanced serviceability and rail approval, resistant to shock and vibration
Fire protection class HL3 According to rail standard EN 45545-2
Pressure circulation lubrication with oil pump as standard
Electronic motor protection

Reliable oil-supply

Oil pump lubrication independent of direction of rotation
Minimal oil throw
Service-friendly oil strainer
Oil pressure monitoring possible
Large-volume oil sump
PTC oil sump heater, self-regulating for HG12 to HG34e

For power-intensive applications: 2-pole drive motor

The 2-pole design compressors offer unparalleled refrigerating capacity for power-intensive applications like mobile air conditioning. Available in both cast iron and lightweight aluminum construction, these compressors also come with optional low terminal boxes and a reduced overall height of 300 mm.

With valve plates K and N

K valve plate advantages:

Specially designed for bus air-conditioning
Exceptional operational safety with loosely guided annular disc packs
Working valves made of high-quality, impact-resistant spring steel
Resilient and reliable under constant speed and pressure fluctuations, as well as exposure to liquids
Lightweight, aluminum valve plate for weight optimization

N valve plate advantages:

Worldwide proven valve design with reed lamellas clamped on one side
High-quality, impact-resistant spring steel valves
Suitable for universal use in mobile applications
Cost-effective and simpler alternative to the K version
Valve base plate made of steel

Looking for spare parts?

BOCKSHOP Spare parts catalog

SEARCH. CLICK. FIND.

The online spare parts catalog allows you to find the right spare parts and accessories for BOCK compressors and units with just a few clicks.

Go to BOCKSHOP

Software

Compressor selection tools - VAP

The VAP tool is ideal for finding the appropriate compressors for mobile applications. By inputting the required refrigerating capacity and operating conditions, the tool will display compatible components right away. In the VAP tools you will also find additional details about the suggested compressors.

Go to tool - VAP for Mobile applications

Related applications

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Bus and train air conditioning

Danfoss provides bus & train air conditioning parts for energy-efficient systems. Visit us here - and learn more about our transport air conditioning systems.
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Reefer container

At Danfoss we have all the refrigeration solutions, experience and know-how to act as a competent and trustworthy partner for the global container industry.
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Truck, trailer and van refrigeration

Danfoss is a world-leading provider of trailer, truck & van refrigeration products. Visit us here - and learn why to choose our energy-efficient solutions.

Learning

Join the CO₂ Technology Training at our Training Center in Frickenhausen

On-site CO₂ Basic training with the tour of the training application, available in English and in German.

Gain a good awareness knowledge about CO₂ technology and register to one of our face-to-face courses. A complete transcritical supermarket cooling system, incl. heat recovery, air conditioning, parallel compression and ejector is available at our training center in Frickenhausen.