How to Choose an Air Compressor

air compressor

If you are looking for an air compressor, you have a few options. Positive displacement air compressors, Roto-dynamic air compressors, and Oil-free air compression systems are all options to consider. Let’s look at the differences between each. Which type will work best for your needs? You can find out here! Continue reading for tips and tricks for choosing an air compressor. Once you’ve chosen the model, you’re ready to make your purchase.

Roto-dynamic air compressors

Centrifugal and roto-dynamic air compressors are a common type of compressor. Both types of compressors use the same basic design: a rotor disc with a fixed casing that rotates. The rotor keeps on rotating as the fixed casing’s eccentric inner material allows the sliding plates to slide. When the plates begin to rotate apart from the center of the compressor, they take hold of vast quantities of air. As the plates converge, the air is compressed.

The primary differences between centrifugal and roto-dynamic air compressors are their operating ranges. Centrifugal compressors deliver the most volume for the least power. Roto-dynamic air compressors are more efficient and have a more narrow operating range. Axial air compressors are smaller and are generally better suited for low to moderate pressures. They are more expensive than axial air compressors but provide an adequate supply of air for a wide variety of applications.

Positive displacement air compressors

A positive displacement air compressor reacts champion air compressors to a change in discharge pressure or higher input energy by reducing the volume of compressed air. It then shuts off when the maximum pressure inside the holding tank is reached. The compressor uses pistons, screws or scrolls to adjust the pressure inside the holding tank. In other words, it’s like a piston-powered car. Positive displacement air compressors are usually sealed to keep ambient air out of the compression chamber.

The basic principle of a positive displacement air compressor is simple. The compressor draws air into the chamber by rotating a piston. As the piston moves, the enclosed volume in each chamber reduces. The pressure inside each chamber rises, and the piston releases the compressed air through a valve. When the piston stops moving, the port opens, releasing the compressed air. Positive displacement air compressors are commonly used in industrial settings. They are easy to manufacture, have fewer moving parts, and can be found in a variety of prices.

Oil-free air compressors

Oil-free air compressors use no oil to lubricate the moving parts and control the waste heat generated by the machine. The oil in these models does not come in contact with the air compressor itself, but it is contained within the gearbox. These gearboxes are designed to last for years without needing oil or grease replacement. This is why oil-free air compressors are less noisy than standard units. Here are some of the advantages of oil-free air compressors.

A class 0 oil-free air compressor is a high-quality option, which guarantees 100 percent oil-free air. Although oil-free compressors typically cost more initially, they can be the most suitable option for sensitive applications. They also provide the cleanest air, as no oil or contamination can reach the end product. Oil-free air compressors, however, are technically not completely oil-free, but contain oil-removing filters to eliminate any contamination. Some manufacturers use oil-free air compressors that are certified as ISO 8573-1 CLASS 0 (2010). The company also holds ISO 22000 certification for its oil-free production facility in Antwerp, Belgium.