Pneumatic system cooling device that cools compressed air to remove moisture and oil content. It cools high-temperature compressed air supplied from compressors to appropriate temperatures and separates and removes condensed water to improve performance and extend lifespan of pneumatic equipment. Integrated into pneumatic systems of injection molding machines, press machinery, automation equipment, etc., providing stable quality compressed air. Available in air-cooled and water-cooled cooling methods, selected according to processing air volume and installation environment. Unlike air dryers and air filters, this equipment specializes in cooling functions through heat exchange.