Menu 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 refrigeration applications due to their lightweight construction. They are approx. 40% lighter and have a reduced overall height, making them particularly suitable for roof mounting on vehicles. Together with the robust K-design valve plate, which was specially developed for bus air conditioning, they are the first choice for electric applications. With the special oil management, the mobile aluminum compressors are also suitable for large inclination angles. Incidentally, the K valve plate developed by BOCK has already been used successfully hundreds of thousands of times in our vehicle compressors. BREADCRUMB Home Products Mobile Applications gas-cooled compressors for mobile applications HG MOBILE ALUMINUM COMPRESSORS FOR VEHICLES ARE AVAILABLE IN THE FOLLOWING VERSIONS: As 2- and 4-cylinder compressors in cast iron or all-aluminum lightweight construction Semi-hermetic compressors with 2-pole drive motor SEMI-HERMETIC 2-POLE ALUMINUM COMPRESSORS 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. APPLICATION: Bus and train air-conditioning Transport refrigeration Mobile cooling SEMI-HERMETIC ALUMINUM COMPRESSORS ADVANTAGES AT A GLANCE PRODUCT QUICK CHECK Reliable and efficient reciprocating piston technology with optimized valve plate system and low oil throw 40% lighter than cast iron version due to lightweight aluminum construction Highly efficient 4-pole and 2-pole electric motors Wear-resistant and durable power unit Power control also possible digitally in wide bandwidth MORE BENEFITS Particularly powerful and compact due to 2-pole drive motor (2,900 1/min - 50 Hz) Even more compact: reduced overall height of 300 mm due to optional terminal box Lockable metal terminal box for access restriction Terminal blocks with increased serviceability and railroad approval, shock and vibration resistant Fire protection class HL3 according to railroad standard EN 45545-2 also with special track painting Pressure 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 SEMI-HERMETIC ALUMINUM COMPRESSOR WITH 2-POLE DRIVE MOTOR FOR PARTICULARLY POWER-INTENSIVE APPLICATIONS For particularly power-intensive applications in refrigeration, such as mobile air conditioning, Bock offers compressor variants in 2-pole design. The 2-pole drive motor ensures a speed of 2,900 1/min (for comparison: 4-pole 1,450 1/min) and a refrigerating capacity that is unprecedented in this size. HG34 reciprocating compressors in 2-pole design are available in cast iron and lightweight aluminum construction. Like the standard series, the HG34 is optionally available with a low terminal box and an overall height of 300 mm. COMPRESSOR PERFORMANCE INCREASED TO THE MAXIMUM: THE BOCK VALVE PLATES K AND N K valve plate The K valve plate was specially developed by BOCK for mobile air-conditioning applications. Due to the use of annular lamellas, it is designed for higher loads and is extremely robust against speed and pressure fluctuations as well as the effects of liquids. It has already been used hundreds of thousands of times in bus air conditioning and is the worldwide benchmark for quality and reliability. BOCK K VALVE PLATE ADVANTAGES AT A GLANCE: Specially developed for bus air-conditioning Highest operational safety: loosely guided annular disc packs prevent bending and torsional forces Working valves made of high-quality, impact-resistant spring steel Extremely resistant and reliable at constant speed and pressure fluctuations exposure to liquids Weight-optimised valve plate made of aluminium N-valve plate Electrical motor protection for 230 V and 24 V version VEHICLE COMPRESSORS FOR MOBILE COOLING BOCK FK COMPRESSORS: MARKET LEADER WITH TRADITION AND INNOVATION BOCK vehicle compressors of the FK series are the result of decades of experience and innovation. Designed for use in bus and rail air conditioning as well as... Read more BOCK CO2 STARCO2OMPRESSOR HR40: NATURALLY INNOVATIVE The innovative "star" drive design of the StarCO2mpressor opens new possibilities in electric bus and train air conditioning: space-saving roof installation... 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