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CMC CWA11-800

Used Revised Air Compressor CMC CWA11-800 40 bar


General Features of the Used Air Compressor CMC CWA11-800 40 bar


The Used Air Compressor CMC CWA11-800 40 bar delivers high performance as an oil-free, three-stage unit, ideal for industrial environments that require high-quality compressed air. CMC manufactured this model in 2010 for air compression systems operating at up to 40 bar of working pressure. Since the unit uses dry-running cylinders, it eliminates the need for internal lubrication. Therefore, operators can use it in critical applications where they must avoid any air contamination. Moreover, its robust design ensures long-term durability and operational consistency.

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Technical Operating Specifications


The Used Air Compressor CMC CWA11-800 40 bar operates with three cylinders across two compression stages. It draws air at atmospheric pressure and functions in ambient temperatures ranging from +1 to +35 °C. Consequently, the unit suits various environmental conditions. The system delivers an intake flow rate of 800 cubic meters per hour and reaches a maximum pressure of 42 bar. In addition, a 132 kW (180 HP) three-phase electric motor powers the compressor at 710 revolutions per minute, running on 400 Volts and 50 Hz. As a result, the compressor provides high efficiency and reliability, even under demanding workloads.


Cooling System and Thermal Management


To maintain optimal temperatures, the Used Air Compressor CMC uses a water-based cooling system for both the cylinders and compressed air. Specifically, copper tube and brass plate heat exchangers dissipate heat in both the intermediate and final compression phases. Furthermore, a gear-driven oil pump circulates lubricant through a dedicated heat exchanger, which enhances cooling performance. Additionally, a preheating resistor stabilizes thermal conditions during start-up. Therefore, the system reduces thermal stress and extends component life. Overall, this combination of cooling solutions ensures optimal efficiency throughout the filtration cycle.


Mechanical Equipment and Functional Components


CMC designed the Used Air Compressor CMC  with a base frame supported by four anti-vibration feet. As a result, operators can install the unit directly on the floor without additional foundation work. The W-type compressor block features dry cylinders and pistons with PTFE-loaded sealing rings. In contrast to lubricated systems, this configuration prevents oil contamination. Furthermore, stainless steel suction and delivery valves include automatic unloader mechanisms that support load/unload functionality. In terms of transmission, the motor and compressor connect via trapezoidal belts, which simplify maintenance. The intake side also includes a silenced filter, while a protective cage improves operator safety.


Safety Devices, Monitoring, and Physical Layout


The Used Air Compressor CMC integrates comprehensive safety and monitoring systems.