Difference between oil-free air compressor and oil injector

The main differences between oil-free air compressors and oil injectors are reflected in the lubrication method, the use environment and the application field. The following is a specific analysis:

lubrication method:

oil-free air compressor: by using high molecular weight polymers or other oil-free lubrication technology to reduce the friction between metals, this way no oil pollution.

Oil injection machine (assuming that this refers to the oil-injected air compressor): It is used to lubricate mechanical parts by injecting grease, reducing wear during high-speed friction, and also providing cooling for the machine.

Use environment:

oil-free air compressor: It is suitable for occasions that require a high degree of cleanliness, such as medical, food, pharmaceutical and other industries, because it will not produce oil pollution.

Oil-injected air compressor: It can better adapt to the occasions of high strength, high temperature and high compression ratio, such as general industry, construction and other fields.

Structure and application:

oil-free air compressor: usually adopts miniature reciprocating piston or screw type, centrifugal structure, and is equipped with high-quality bearings and precision gears to ensure the precise fit of the rotor and long-term efficient operation. This type of compressor can continuously produce clean oil-free compressed air during operation.

Oil-injected air compressor: The structure may be more complicated, and issues such as oil mist separation and oil and gas cooling need to be considered.

In summary, there are significant differences between oil-free air compressors and oil-injected air compressors in terms of lubrication methods, applicable environments, and structural characteristics. These differences make the two compressors have their applicable occasions and advantages.