Rotary Screw Compressors
Bellville
Airpower is an importer and manufacturer of many makes and types of direct and belt rotary screw driven compressors in Bellville. Driven by: direct on-line, star-delta, inverter / variable speed energy efficient permanent magnet electric motors.
Our Range of Rotary Screw Compressors in Bellville
USAir 10 Screw Compressor
Details
Input power: 380/400 Volt Three phase, 50 Hz, 7.5 kW, 10 hp.
Maximum pressure: 13 bar, 189 psi.
Dimensions: L 1180mm x W 770 mm x H 1000 mm
Airpower recommend these units for heavy industrial work.
USAir 20 Screw Compressor
Details
Input power: 380/400 Volt Three phase, 50 Hz, 15 kW, 20 hp.
Maximum pressure: 13 bar, 189 psi.
Dimensions: L 1380mm x W 970 mm x H 1300 mm
Airpower recommend these units for heavy industrial work.
USAir 30 Screw Compressor
Details
Input power: 380/400 Volt Three phase, 50 Hz, 22 kW, 30 hp.
Maximum pressure: 13 bar, 189 psi.
Dimensions: L 1380mm x W 970 mm x H 1300 mm
Airpower recommend these units for heavy industrial work.
Why use a rotary screw compressor?
Unlike piston air compressors, screw compressors have no valves or other oscillating mechanical forces to cause imbalances. A screw compressor can operate at high speeds while combining a large flow rate with small exterior dimensions. There are two primary rotary screw compressor versions; oil-free and oil-injected. For each version, there are options of fixed speed or variable speed drive operation.
What is a screw compressor and how does it work?
Developed in the 1930s, screw technology is a type of rotating positive displacement compressor or rotary compressor, with a male and female rotor driven either by the male rotor or timing gear. The male and female rotors spin in opposite directions. This draws air into the pockets of the screws. These pockets of air are forced towards the outlet. This is a positive displacement operation. There are no oscillating parts and the reciprocating compressor is a very efficient way to compress air. The variable speed drive units, adjust the speed of the rotors, to only deliver the volume of air consumed. This minimizes the electrical power consumed.
Download our Screw Compressor User Manual Here
Refrigerated Dryers
Refrigerated air dryers from 750 liters/min up to 17000 liter/min ex-stock. Larger ex overseas. Dew point 4°C under pressure. Automatic drain pre and manual drain after filters.
Screw Compressors
Screw compressors have no valves or other mechanical forces to cause imbalances unlike piston compressors.
Compressor Components
Airpower keeps universal spare parts for compressors. Pressure switches, non return valves and safety valves are universal to all compressors. Bottom entry filters/ regulators, electric motors and starters can be used for many makes of compressors.
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