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A rotary screw compressor uses two intermeshed helical rotors (screws) within a precisely machined stator to compress air. Clearances between the rotors and the stator are very small and are usually sealed by injected lubricant. As the rotors turn, their helical grooves trap air and seal against the stator wall. The volume of these grooves decreases as the rotors turn and mesh together, compressing the air while moving it to discharge port.

Rotary screw compressors are built as packages which consist of the compressor unit (air end), lubrication system, cooling system, capacity control system, and discharge air cleanup system.

     
 
 

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Sullivan Palatek Rotary Screw Air Compressors Champion Rotary Screw Air Compressors Compair Hydrovane Rotary Screw Air Compressors

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  Direct Drive Rotary Screw Compressors    
   

Standard Direct Drive

       
 

Simplicity of design and durability of components assures a long service life for our standard direct drive rotary screw air compressors.

  • Fewer but larger bearings
  • Slower operating speeds
  • Lower noise levels
  • 15 to 200 HP Units available
       
  Request Additional Information
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Geared Direct Drive
 

Cal Supply's Driect Drive Greared Rotary Screw Air Compressors are built with optimized rotor speed in mind. This allows for a greatly enhanced performance in a given motor size.

  • Increased output and efficiency
  • No belt losses
  • 30, 40 and 50 HP Units Available
       
  Request Additional Information
  Updraft Cooler Direct Drive                    
 

In our Direct Drive Updraft Cooler Rotary Screw Compressors vertical cooling air flow simplifies exhaust ducting or heat reclamation and reduces the clearance required around the machine.

  • Prevents recirculation of hot exhaust air
  • Reduces package footprint
  • 40, 50 and 60 HP Units Available
       
  Request Additional Information
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  Small Belt Drive Rotary Screw Compressors        
 

Cal Supply's Small Belt Drive Rotary Screw Air Compressors deliver more CFM per horsepower (HP) than reciprocating air compressors at pressures below 125 PSI.

  • Compact design
  • Quiet enclosures available
  • Capable of 100% duty cycle
  • Easy to maintain
  • 5, 7.5, 10 and 15 HP Models Available
       
  Request Additional Information                        
                                     
  Variable Speed Rotary Screw Compressors    
 

Variable speed technology allows compressor output match system demand by changing compressor speed.

  • Most efficient at loads of 70% or less
  • Considerable Energy Savings
  • Eligible for rebates from many utility companies
  • 15 through 300 HP Units Available
       
  Request Additional Information        
                                   
  Variable Displacement Rotary Screw Compressors  
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In a Single Stage Variable Displacement Rotary Screw Compressor output is matched to system demand by changing the internal volume (displacement) of the compressor.

  • Most efficient at load levels of 70% or more
  • Considerable Energy Savings
  • Eligible for rebates from many utility companies
  • 50 through 350 HP Units Available
       
  Request Additional Information                        
                                     
  Oil Free Rotary Screw & Scroll Compressors     Back to Top  
 

Oil Free Rotary Scroll Compressors

  Rotary Scroll Compressor      
 

These machines are the perfect fit for small to medium sized medical, dental, labratory, pharmaceutical and electronics applications

  • Noise levels as low as 49 dB(A)
  • Minimal Vibration
  • Air Cooled
  • Pressures as high as 140 PSIG
  • Easy installation and maintenance
  • 3 through 40 HP Packages Available
       
  Request Additional Information                        
                                     
  Two Stage Oil Free            
 

Two stage oil free compressors maximize efficiency in larger sizes.

  • Cooling water is required
  • Offers the cleanest possible compressed air
  • 125 through 400 HP Units Available
 
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  Packaged Rotary Screw Compressed Air Systems       Back to Top  
 

Packaged rotart screw compressor systems offer pre-piped and wired components to minimize installation costs as well as make relocation easy.

  • 5 to 30 HP Units Available
       
                     
  Request Additional Information        
                     
                         
 
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