QSI
QSI
QSI 50-400 hp Premium Industrial Compressors
Quincy Compressor provides you with the industry’s most reliable air compressor on the market. Robust airends, and multiple option configurations ensure that a QSI is the correct solution for any application. Industrial duty QSI air compressors take all aspects of compressor ownership and optimize them in order to provide you with the best ROI in the market.
At a Glance
- Air or water cooled
- Best specific power
- Sound level as low as 66 dBA
- 10-Year Royal Blue Warranty
- Premium Serviceability
Up Close
- 220-2011 cfm
- 100-175 psig
- 100,000+ airend
- Competitive options
- Industrial Duty
- Color Touch Screen
Quincy QSI Key Features
When you invest in Quincy QSI compressors, you’ll experience up to 100,000 hours of dependable service — over double the average life span of lower-quality products. Our factory-tested rotary screw compressors operate between 50 and 400 horsepower (hp) and are optimized for minimal maintenance and maximum uptime. The QSI is available in both air- and water-cooled configurations.
Our rotary screw air compressors are designed with many innovative features to optimize your applications, including:
- A self-sustained base frame that eliminates the need for floor anchoring.
- Forklift holes to facilitate easy placement without the use of a crane.
- Vertical draft cooling for reduced ducting cost and complexity.
- Hinged doors and detachable panels for easier access to consumables.
- A needle valve that enables oil sampling during operation.
- A separator element designed for minimal replacement frequency.
- A user-friendly color touch screen.
- Low sound emissions for minimal noise pollution.
Applications of Rotary Screw Air Compressors
The Quincy QSI is designed to take on applications that require full airflow capacity in harsh operating conditions, such as hot, cold, dirty or outdoor environments. Rotary screw compressors like the QSI are useful in many industries:
- Food and beverage
- Manufacturing
- Construction
- Mining
- Oil and gas
- Automotive
- Chemical
- Pharmaceutical
- Energy
- Heating, ventilation and air conditioning (HVAC)
- Agriculture
Quincy QSI Compressor Performance
Our rotary screw QSI compressors exhibit high operational efficiency and performance by producing an output of 100-175 pound-force per square inch (psi) and an airflow volume of 220-2,011 cubic feet per minute (CFM). These single-stage oil-injected compressors feature sound-insulated bodywork and a gearbox driven by a powerful electric motor. The gearbox includes a microprocessor control system so users can adjust system performance without the need for complex codes.
A Quincy direct drive air compressor is an investment in the long-term success and profitability of your business. We strive to deliver products that last longer and provide more reliable performance throughout their operational life. Quincy QSI air compressors are engineered to provide upwards of 100,000 hours of service — more than double the expected lifespan of its lower-cost competitors. In addition to lasting longer, our products also have fewer maintenance requirements and increased average uptime. These key benefits translate to a faster return on your investment as well as greater productivity overall.
QSI Fixed Speed Technical Specs
| Model No. | HP | KW | PSI | ACFM | Length | Width | Height | Weight lbs. | DBA |
| QSI-50 | 50 | 37 | 100/110 | 240.9 | 67 | 37.7 | 65.8 | 2217 | 66 |
| QSI-50 | 50 | 37 | 125/128 | 215.1 | 67 | 37.7 | 65.8 | 2217 | 66 |
| QSI-60 | 60 | 45 | 100/110 | 296.3 | 67 | 37.7 | 65.8 | 2236 | 66 |
| QSI-60 | 60 | 45 | 125/128 | 267.1 | 67 | 37.7 | 65.8 | 2235.5 | 66 |
| QSI-75 | 75 | 55 | 100/110 | 390.2 | 75.8 | 49.9 | 78.8 | 3545 | 74 |
| QSI-75 | 75 | 55 | 125/128 | 357.9 | 75.8 | 49.9 | 78.8 | 3545 | 74 |
| QSI-100 | 100 | 75 | 100/110 | 512.3 | 75.8 | 49.9 | 78.8 | 3650 | 76 |
| QSI-100 | 100 | 75 | 125/128 | 467.1 | 75.8 | 49.9 | 78.8 | 3650 | 76 |
| QSI-125 | 125 | 90 | 100/110 | 614.7 | 75.8 | 49.9 | 78.8 | 3765 | 78 |
| QSI-125 | 125 | 90 | 125/128 | 548.5 | 75.8 | 49.9 | 78.8 | 3765 | 78 |
| QSI-150 | 150 | 110 | 100/110 | 769.0 | 112.0 | 77.0 | 83.0 | 7186 | 74 |
| QSI-150 | 150 | 110 | 125/128 | 678.3 | 112.0 | 77.0 | 83.0 | 7186 | 74 |
| QSI-175 | 175 | 132 | 100/110 | 870.0 | 112.0 | 77.0 | 83.0 | 7400 | 74 |
| QSI-175 | 175 | 132 | 125/128 | 791.0 | 112.0 | 77.0 | 83.0 | 7400 | 74 |
| QSI-200 | 200 | 160 | 100/110 | 996.9 | 112.0 | 77.0 | 83.0 | 7524 | 74 |
| QSI-200 | 200 | 160 | 125/128 | 917.5 | 112.0 | 77.0 | 83.0 | 7524 | 74 |
| QSI-250 | 250 | 185 | 100/110 | 1297.0 | 142.0 | 81.0 | 89.0 | 10700 | 82 |
| QSI-250 | 250 | 185 | 125/128 | 1228.0 | 142.0 | 81.0 | 89.0 | 10700 | 82 |
| QSI-300 | 300 | 220 | 100/110 | 1603.0 | 142.0 | 81.0 | 89.0 | 10941 | 82 |
| QSI-300 | 300 | 220 | 125/128 | 1498.0 | 142.0 | 81.0 | 89.0 | 10941 | 82 |
| QSI-350 | 350 | 260 | 100/110 | 1805.2 | 150.0 | 81.0 | 89.0 | 12300 | 84 |
| QSI-350 | 350 | 260 | 125/128 | 1655.0 | 150.0 | 81.0 | 89.0 | 12300 | 84 |
| QSI-400 | 400 | 315 | 100/110 | 2011.3 | 150.0 | 81.0 | 89.0 | 12300 | 85 |
| QSI-400 | 400 | 315 | 125/128 | 1830.8 | 150.0 | 81.0 | 89.0 | 12300 | 85 |
Rotary Screw QSI Maintenance
Our direct drive air compressors have minimal upkeep requirements due to their long-lasting filters, helping companies reduce downtime on the job site. They also offer easy access to serviceable parts, making the maintenance process faster.
You can maintain your Quincy QSI 1,000 or 500 compressor with genuine parts and lubricants from Quincy Compressor. We carry rotary screw fluids with exceptional friction protection, viscosity maintenance and extended rotor and bearing life. You can also purchase genuine Quincy components to experience increased uptime and efficiency with lower costs and longer service intervals.
Backed by an Industry-Leading Warranty
When you purchase an air compressor from the Quincy QSI series, you’ll receive Quincy’s 10-Year Royal Blue Warranty. This complete warranty covers your unit’s airend for 10 years and all major parts for five years, including:
- Variable speed drives
- Air/fluid receivers
- Drive motors
- Drive couplings
- Coolers
For additional coverage, you can invest in one of our extended warranty packages.
Contact Us to Learn More About the QSI Rotary Screw Air Compressor Line
The local authorized Quincy Compressor dealer in your area offers a complete lineup of QSI rotary screw air compressors for sale. Your dealer can also provide routine maintenance and repair service to keep your compressor up and running.
Find the Quincy dealer in your area or contact us directly if you have specific QSI questions.
Click the link to learn more about rotary screw air compressor horsepower.
Learn more about what makes Quincy Compressor a top rotary screw air compressor manufacturer.
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Learn more about rotary screw air compressor maintenance.