CF390MC-10.5 air compressor with high painting efficiency on site 2025

In the shipyard spraying scene, the CFAIR CF390M-10.5 diesel screw compressor can continuously output 390 cfm (11.0 m³/min) @ 10.5 bar of high-flow and high-pressure compressed air, which is 15 cfm and 0.5 bar higher than the traditional 375 cfm @ 10 bar model, significantly shortening the spraying cycle and optimizing the atomization effect, improving coating adhesion and surface finish. Its integrated after-cooling-air heat exchange and water separation system can reduce the exhaust temperature to ambient temperature - 20 °C, completely remove liquid water and droplets, ensure stable output of the spray gun, prevent condensation in the pipeline, and extend the life of the equipment. Equipped with a Cummins diesel engine with multi-point inspection and refurbishment maintenance, the output is stable and reliable, and the zero-failure high stability rate can minimize the loss of on-site downtime. Intelligent air volume control combined with speed regulation technology can reduce fuel consumption by about 20%–50% when no-load or low-load, reduce fuel consumption costs and carbon emissions, and achieve green and efficient spraying operations.

CFAIR CF390M-10.5 (CF390MK-10.5) is a trailer-type single-stage twin-screw mobile compressor with a compact design and closed structure. It has three ¾" and one 1¼" interfaces, which is convenient for multiple spray guns to operate simultaneously. The overall size of the machine is 4567 × 2027 × 2000 mm, and the weight is about 2070 kg. It has international export standard pallet packaging, which is suitable for common transportation and storage conditions at sea, shipyards and ship maintenance sites.

Performance parameters and advantages

Performance improvement and spraying efficiency

Higher flow and pressure: 390 cfm @ 10.5 bar continuous high-efficiency airflow can increase the air volume and pressure by about 4% and 5% compared with the traditional 375 cfm @ 10 bar model, significantly improving the air intake and powder discharge efficiency of the spray gun, thereby shortening the spraying cycle and improving productivity.

Optimize atomization and adhesion: According to spray process research, sufficient air pressure and air volume can ensure good atomization of the paint at the nozzle outlet, while reducing uneven particle size distribution and overspray, thereby maintaining the spray transfer efficiency at 40%-60% or higher, reducing material waste and improving coating uniformity.

Integrated aftercooling system

Efficient heat exchange and water separation: The integrated aftercooler equipped with CF390M-10.5 can instantly cool down the compressed air outlet and remove liquid water and atomized water droplets through the built-in water separator. The outlet gas temperature can be normally controlled at ambient temperature -20 °C to ensure that there is no risk of condensation in the pipeline and spray gun.

Stable output and equipment life: Dry, low-temperature compressed air can not only prevent pipeline corrosion, but also protect the valves and nozzles of the spray equipment, extend the service life of key components, and have a decisive impact on the back-end filtration and coating quality.

Engine and stability

Cummins power: Equipped with a Cummins engine, it meets the internal Stage II emission standards, provides the solid and reliable power required for 390 cfm, and can maintain the rated torque in the range of 1500-2200 rpm, ensuring the stability and continuity of air pressure during the spraying process.

Zero failure and high stability rate: Field tests and industry statistics show that the stable operation time of the whole machine can reach more than 99%, minimizing unplanned downtime and ensuring that the compact production rhythm of the shipyard is not affected.

Intelligent control and energy saving

Intelligent air volume control: CFAIR's independently developed air volume-speed linkage control algorithm can monitor the spraying air volume demand in real time and automatically adjust the engine speed to avoid excessive high speed and no-load operation.

Significant fuel saving and consumption reduction: Under no-load and 50% low-load conditions, intelligent speed regulation can reduce fuel consumption by 20%-50%. Compared with traditional constant-speed models, it can save dozens of liters of fuel per day, directly reduce operating costs and reduce carbon dioxide emissions, and help enterprises achieve green transformation.

On-site adaptability and application value

High mobility: The single-axle trailer design with puncture-proof tires is suitable for rapid deployment in shipyard corridors, decks and narrow passages without the need for additional loading and unloading equipment.

Multi-working conditions: From sand blasting, hull rust removal to zone spraying, it can provide stable, clean and low-temperature compressed air, which is widely used in offshore engineering, oil platforms, pipeline high-pressure testing and marine engineering painting.

Safety and environmental protection: It complies with many international safety and environmental protection standards such as CE, and the noise of the soundproof shell is lower than 85 dB(A), which reduces environmental interference and occupational hazards in offshore operations.

CFAIR CF390M-10.5 diesel screw compressor provides the industry's top compressed air solutions for shipyard spraying and professional painting contractors through multiple technical advantages such as higher flow pressure, integrated high-efficiency aftercooling, Cummins stable power and intelligent speed regulation and energy saving. Whether in spraying efficiency, coating quality or energy cost control, it far exceeds the traditional 375 cfm @ 10 bar model, and is the ideal choice for modern shipyards seeking efficient, stable and green painting operations.