25-300 HP Rotary Direct Drive

Challenge: How to design and manufacture powerful, but economical and reliable air compressors, while reducing the number of components needed, compared to a gear-driven unit.

Myth: Some air compressor users confuse gear-driven with direct-drive and believe that a "gear-driven" unit qualifies as "direct-drive." (They are not the same.)

Learn from us: The one-to-one direct drive units provided by Kaeser are true "direct-drive" air compressors. In Kaeser direct drive packages, one-to-one drive reduces the number of components needed, thus increasing reliability and service life. For example, in Kaeser's ASD packages, the motor is directly connected to the airend with a maintenance-free coupling, providing maximum transmission efficiency. The airend and motor are connected by a casting which is doweled and pinned to assure perfect alignment. The one-to-one direct drive units feature a low noise radial fan and a "split cooling air flow" design that dramatically reduces noise levels and provides optimum cooling.

Hope Air Systems responds: The Kaeser ASD/BSD/CSD/DSD/ESD series of direct drive air compressors offers a wide range of capabilities to meet any critical manufacturing requirement. Kaeser has selected oversized airends specifically matched to produce the required output in flow and pressure. Compared to compressors using small, high-speed, gear-driven airends, the one-to-one drive provides triple savings:

• no-loss power transmission
  
• lower power consumption
  
• reduced maintenance and downtime costs

Let's consider a direct drive system:

• ASD Series:
  • 25 HP to 40 HP
    
    
• BSD Series:
  • 40 HP to 60 HP
    
    
• CSD Series:
  • 60 HP to 125 HP
    
    
• DSD Series:
  • 100 HP to 200 HP
    
    
• ESD Series:
  • 250 HP to 300 HP

The Kaeser one-to-one direct drive series of rotary screw air compressors feature many design innovations and benefits:

• Two-stage 4 micron air intake filter extends airend life
  
• Optimized, high-efficiency separation system
  
• Oversized airends
  
• Direct coupling of motor to airend
  
• High efficiency electric motor
  
• Powerful radial fan for improved air flow
  
• Sound proofing enhanced by split cooling air flow

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