Rotary Screw Compressor Rebuilds

North Texas Screw Compressor services specializes in rotary screw compressor repairs and rebuilds. We offer premium services at the lowest cost available on the market, changing the screw compressor industry each repair at a time. Some of the screw compressor applications we serve include:

  • Industrial ammonia refrigeration
  • Industrial R-22
  • 134a
  • R-170
  • Natural gas (clean and dirty)
  • C02

When it comes to rotary screw compressors, airends operate constantly—making it inevitable to eventually succumb to wear and tear. However, a broken rotary screw compressor means down time for the entire business or operation, potentially losing a lot of money. If your rotary screw compressor isn’t working, don’t halt your business operations; call North Texas Screw Compressor Services. We assess your screw compressor function and system conditions to maximize the rate of return on your investment. Any downtime at your operation from a compressor issue means serious production problems that result in operations and costs overages. 

Our experience repairing and rebuilding rotary screw compressors spans a wide range of industries, including:

  • Pharmaceutical production
  • Cold storage
  • Food processing plants
  • Beverage production
  • Chemical production
  • Natural gas
  • Recycled methane power plant production

Rotary Screw Compressors Explained

Also called a twin screw compressor, a rotary screw compressor is an air compressor that utilizes a rotary-type positive displacement mechanism (which is called a rotary screw) airend. Rotary screw compressors are most commonly used in commercial and industrial operations, where significant volumes of pressure are required to operate large machinery.

A rotary screw compressor’s compression process is not to be confused with a piston compressor. The rotary screw airend produces compression in a constant, sweeping motion. As a result, there is very little pulsation or surging of flow, a common occurrence with piston compressors. Additionally, rotary screw compressors use two intertwined helical shaped screws (known as the rotors) to compress the air. These rotors are designed to tolerate large amounts of pressure, even to the point where the vanes on the rotors are almost touching.

For oil-based rotary screw compressors, the lubricant covers the space between the rotor vanes. This provides a hydraulic seal and transfers mechanical energy between both the male and female rotor. Air enters the system via the suction of the airend and flows through the rotor vanes as the screw rotors rotate. The intertwined rotors force the air and oil through the airend, which eventually exits the end of the screws. Then, the air and oil separate. This process cools the air, and filters the oil to be rerouted back into the airend in a closed system.

When it comes to a dry-running rotary screw compressor, timing gears maintain the male and female rotors to maintain precise alignment. Gas enters via the suction side of the rotary screws, and moves through the threads as they rotate. The meshing rotors then force the gas through the compressor, exiting at the end of the screws. This is different from an oil-flooded rotary screw compressor, which bridges the space between the rotors and transfers mechanical energy between the driving and driven rotor.

The effectiveness of the rotary screw compressor mechanism depends on the fitting spaces between the helical rotors, between the rotors and the chamber for sealing the compression cavities. Of course, some leakage is inevitable. Therefore, high rotational speeds are required to minimize the ratio of the leakage flow rate and the over-effective flow rate.

North Texas Screw Compressor Services

North Texas Screw Compressor Services is the premium screw compressor repair service in North Texas. We offer professional services at the lowest cost in the industry, making sure any and all businesses can continue operations without lingering downtime. To schedule a visit or for more information, contact us today.

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