Air Compressor Oil Number

Air compressors are essential equipment used in various industries and applications to convert power into potential energy stored in pressurized air. To ensure their proper functioning and longevity, it is important to lubricate them with the right kind of oil. Air compressor oil plays an important role in reducing friction, dissipating heat, and preventing wear and tear on vital components.

Importance of oil number

ISO VG (Viscosity Grade) Number: Air compressor oils are classified using ISO VG (viscosity grade) numbers. These numbers represent the viscosity, or thickness, of the oil at a given temperature. Density directly affects how well the oil lubricates and protects the internal parts of the compressor.

Viscosity and its effect: The viscosity of air compressor oil is important because it determines how effectively the oil can form a protective film on moving parts. Oil that is too thin may not provide sufficient lubrication, while oil that is too thick may cause increased resistance and inefficient operation.

Choosing the Right Oil Number

Manufacturer recommendations: When choosing the appropriate air compressor oil, it is essential to refer to the compressor’s manual or manufacturer’s guidelines. They will specify the ISO VG number or viscosity grade recommended for your particular compressor model. Following these recommendations will ensure optimum performance and longevity of the equipment.

Operating conditions

Operating conditions also affect the selection of air compressor oil number. For example, in environments with extreme temperatures or high humidity, a different oil viscosity may be required to maintain proper lubrication and safety.

Benefits of using the correct oil number

Enhanced performance: Using the correct air compressor oil number ensures that the compressor operates smoothly and efficiently. Proper lubrication reduces friction, resulting in lower energy consumption and longer tool life.

low maintenance cost: There is less wear and tear on well-lubricated air compressor components, resulting in lower maintenance and repair costs. Using the correct oil number regularly can prevent costly breakdowns and equipment downtime.


In conclusion, air compressor oil numbers, represented by ISO VG numbers, play an important role in maintaining the performance and reliability of an air compressor. By understanding the importance of oil viscosity and following the manufacturer’s recommendations, users can ensure that their air compressors perform optimally and last longer. Regular checking and changing of the oil along with proper maintenance will help in achieving efficient and trouble-free compressor operation.

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