For the oil-lubricated screw air compressors, lubricating oil not only plays the role of sealing, cooling, noise reduction, lubrication, etc. but also serves as hydraulic oil for adjusting the movement of components.
There are three kinds of Lubricating oil: Mineral oil, synthetic oil, and Semi-synthetic oil.
These years, the use of general mineral oil is restricted, and the use of semi-synthetic oil and synthetic oil is increasing.
Synthetic oil has become a general recommendation and quality assurance choice. Of course, the price is also very high. The advantages which can extend the life of bearings and equipment:
A wider operating temperature range
- Less sludge and gel formation
- Lower oil volatility leading to reduced lubricant consumption
- Stable performance and lower maintenance costs
For the recommended use time of the different oil
- The compressor oil formulated with the common solvent refined mineral oil: 1000 hours.
- The compressor oil of the hydro refined mineral oil: 2000-4000 hours.
- The synthetic compressor oil: 4000-8000 hours.
- If we check and maintain the running lubricating oil, the oil using time will be longer.
When selecting the oil, please check the compatibility with sealing materials.
At the same time, when replacing the lubricating oil, we need to clean the air compressor system.