Air compressor oil is a synthetic oil designed to lubricate the ball bearings and reduce carbon deposits inside a compressor. Routine oil changes prevent the compressor from overheating and reduce the overall wear and tear on the motor, which is why it’s important for owners to stay on top of maintenance. Below, the team at Compressed Air Solutions in Maryland Heights, MO, share a comprehensive guide to air compressor oil changes, so you can determine the right frequency for your compressor type.

Reciprocating Air Compressor

Reciprocating compressors use pistons driven by a crankshaft to compress gas. Routine oil changes are necessary to prevent metal-to-metal contact. As a general rule of thumb, most manufacturers recommend having the oil changed every three months or after 500 hours of operation. You can also consult the manufacturer’s manual, which should detail a recommended frequency for oil changes.

Rotary Screw Compressor

While a reciprocating compressor functions with on and off settings, a rotary screw compressor runs continuously. It uses two interlocked screws, known as rotors, to compress gas. This type of compressor is often used in large-scale industrial applications due to the continuous motion of the screws. Most manufacturers recommend changing the oil in a rotary screw compressor after 7,000 to 8,000 hours of use; however, you should check the manual for more precise guidelines.

If you’re still unsure when it’s time to change your air compressor oil, consult a technician for professional advice. For over 20 years, the team at Compressed Air Solutions in Maryland Heights, MO, has offered a wide array of services for air compressors, including evaluations, repairs, and audits. They also offer replacement parts for every make and model of compressor. Call (888) 426-4778 to speak with one of their specialists, and visit their website for more information about their full range of parts and services.