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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.


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

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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.