How Often Should You Change Oil in a Screw Compressor?

How Often Should You Change Oil in a Screw Compressor?

Regular oil changes are essential for maintaining the performance and longevity of a screw compressor. The oil not only lubricates the rotating elements but also cools, seals, and cleans the interior of the compressor. Neglecting oil replacement can lead to overheating, reduced efficiency, and costly breakdowns.

Why is oil replacement important?

During operation, oil degrades due to heat and moisture. Old or contaminated oil loses its lubricating and cooling properties, which may cause wear of bearings and rotors. Regular oil changes ensure longer compressor life and stable performance.

Recommended oil change intervals

For standard CORMAK screw compressors, the recommended schedule is:

• first change after approximately 500 hours of operation,
• subsequent changes every 2000–3000 hours or once a year, depending on usage.

In dusty, humid, or high-temperature environments, more frequent changes are advisable. Always replace the oil filter and oil separator at the same time.

How to change compressor oil?

• Disconnect power and let the compressor cool down.
• Drain old oil through the outlet valve.
• Replace the oil filter and separator.
• Refill with the recommended oil.
• Run the compressor and check the oil level.

Why choose CORMAK compressors?

CORMAK screw compressors combine reliability, efficiency, and easy maintenance. Built with durable components, they deliver consistent performance and long service life. Explore the full range of CORMAK compressors and service accessories today.