About Rotary Screw Air Compressors
How Rotary Screw Air Compressors Work
- C-Aire is North America's largest distributor of BOGE rotary screw, scroll, and variable speed air compressors.
- A rotary screw compressor includes two intermeshing rotors in housing that have an inlet port at one end and a discharge port at the other end.
- Most rotary screw units are single-stage.
- Motors run continuously. The inlet port is closed when the desired PSI is achieved and opens again as needed.
- Lubricant injected into the compression chamber serves three functions:
- Lubricates the intermeshing rotors and bearings
- Removes most of the heat
- Acts as a seal in the clearances between the meshing rotors and housing
- Air exiting the rotors passes through a sump/separator. Directional and velocity changes are used to separate most of the liquid.
- The remaining aerosols in the air are separated by a coalescing filter, resulting in generally 2-5 parts per million of lubricant carryovers.
- Lubricant (carrying much of the heat from air compressing) passes through the cooler before returning to the rotators.
- Rule of thumb: every 1 HP produces 4 CFM
- Duty cycle can be 100% (80% minimum, designed for continuous use)
- Lower cost of compressed air (energy cost)
- Complete package: air is cooled, filtered through a Coalescing Filter, vibration-free
- Higher initial cost
- Requires professional maintenance
- BOGE's screw compressors offer maximum reliability, highly efficient operation, and extremely easy maintenance. Whether with oil-injection cooling or oil-free, frequency-controlled, belt-driven, or directly coupled - these sturdy machines form the backbone of the industry.
Rotary Screw Compressor Specification Table
C-Aire's rotary screw compressor specification table shows the commonly needed specs for all of the CL series rotary screw compressors. For more information about the other BOGE compressed air systems, please reach out to us by using the form at the bottom of the page. To enable full-screen mode, click on the outward arrows in the bottom right of the table.
BOGE Compressed Air Systems
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