Description They are typically lighter, quieter, and more portable compared to their oil-lubricated counterparts. Oil-less compressors are commonly used in industries such as medical and dental as they deliver clean, oil-free compressed air, which is essential for sensitive applications. Input Voltage : 220V / 60 Hz Air Delivery: 9.6 CFM @ 40 PSI Working Pressure: 85-115 PSI Tank Capacity: 55 Liters Speed: 1725 RPM