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Oil Free Rotary Screw

Results
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Pressure:

100 to 150 psi

Flow:

5.3 to 48.28 cfm

Motor power:

50 to 420 HP
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Pressure:

100 to 150 psi

Flow:

5.1 to 50.07 cfm

Motor power:

50 to 420 HP
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Pressure:

100 to 150 psi

Flow:

14.6 to 53.6 cfm

Motor power:

125 to 215 HP
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Pressure:

100 to 150 psi

Flow:

28.0 to 50.7 cfm

Motor power:

250 to 450 HP
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Pressure:

up to 100 psi

Flow:

1.7 to 34.8 cfm

Motor power:

.75 to 5 HP
White Paper
Compressor Selection Guide
A Complete Reference for Choosing the Right Industrial Air Compressor

High-Purity Oil-Free Rotary Screw Air Solutions

Oil-free rotary screw compressors are the preferred choice for industries where air quality directly affects product integrity, safety, and compliance. Even minimal oil carryover can cause production downtime, contamination, equipment failure, or costly recalls — which is why many facilities rely on true oil-free technology to guarantee consistent, clean, and reliable compressed air.
Oil-free compressors operate without oil in the compression chamber, fully eliminating the risk of oil entering your air supply. This makes them ideal for high-purity environments such as food and beverage production, pharmaceutical manufacturing, electronics, healthcare, and other applications where air quality is mission-critical. Gardner Denver’s oil-free rotary screw systems are designed to deliver stable performance, low noise levels, and long-term reliability with minimal maintenance.

Advanced features such as two-stage compression, optimized cooling, and optional variable speed technology help maximize energy efficiency and reduce operating costs. Integrated smart controls, including iConn remote monitoring, provide real-time insights into system performance, ensuring uptime and giving operators complete visibility of their air system.

Whether your priority is air purity, operational safety, or total cost of ownership, oil-free rotary screw technology offers a dependable solution backed by strong engineering and a focus on long-term system efficiency.

Compressor Ratings by Technology & Type

RECIPROCATING  (SMALL)

ROTARY SCREW

ROTARY VANE

FEATURE OR ISSUE

2-STAGE

FIXED SPEED,
1-STAGE

VARIABLE SPEED,
1-STAGE

FIXED SPEED,
2-STAGE

VARIABLE SPEED,
2-STAGE

FIXED SPEED

VARIABLE SPEED

Compressor Efficiency – Full Load

3

4

3

5

4

3

2

Compressor Efficiency – Part Load

3

3

4

3

5

2

3

Low Installation Cost

5

4

4

3

3

4

4

Low Noise Level

2

5

5

4

4

5

5

Low Maintenance Cost

5

4

4

3

3

4

4

Small Footprint

5

4

4

3

3

5

5

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