Rotary Screw Air Compressors

What You Should Know About Rotary Screw Air Compressors

A rotary air compressor is designed to be used in industrial and commercial applications. They are made to supply a continuous amount of air to items like jackhammers, pneumatic pumps, and sandblasters. Here is what you should know when searching for an affordable rotary screw air compressor for sale for your application.

The rated horsepower ratings for a screw air compressor listed on eBay are 3, 5, 5.4, 7.5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 75, 100, 125, 150, 200, 250, 300, 350, 400, and 450. With this many choices, it is necessary you choose a screw type air compressor that meets your horsepower needs as closely as possible.

The horsepower is related to the ability of the screw air compressor to fill its tank with air. You should have a motor with enough horsepower to fill the compressor's tank so you do not run out and have lengthy downtimes while the tank fills back up with air. How much air gets used is determined by the cubic feet per minute (CFM) and the pounds per square inch (PSI) of air the equipment and tools you are using require. You want to measure the total amount of CFM and PSI your tools and equipment need and choose a compressor with enough horsepower to produce both.

Peak horsepower is the highest amount of horsepower the rotary screw air compressor will produce to meet its needs to start up and get everything running. The compressor will only hit its peak rating during this process, and then it will start running at its rated horsepower. The rated horsepower is what the compressor will shift down to after everything has started up. When choosing a rotary screw air compressor to meet your needs, you should choose one based on the rated horsepower and not the peak one.

There is typically a wide selection of new and affordable used rotary screw air compressor with dryer listed on eBay, including those made by Brehob, ALMiG, Air Compressor Works, Universal Air Products, Thomas Products, and Durr MEGTEC. In addition to the horsepower ranges listed above, the amount of PSI the compressors produce ranges from 100 psi to 210 psi. The air tank capacity of the air tanks on the compressors are 53, 60, 80, 120, and 240 gallons.