QSI Industrial Rotary Screw Air Compressor Register your Compressor Literature Library Sales & Service Locator Careers Parts Order Tracking Newsletter Sign Up Contact Quincy (251) 937-5900 Request A Quote Request A Quote Search Menu Menu Products Rotary Screw Air Compressors QGD QGDV QGS QGSV QGV QSI Reciprocating Piston Compressors QR-25 QP QT Climate Control Single Stage Portable Air Compressor Air and Nitrogen Boosters QB – Oil Lubricated QDS Odyssey – Oil-Free Oil-Free Compressors QOF Scroll WIS Water Injected QOFT Tooth QOF Screw Coaire Scroll Vacuum Pumps QCV & QCLP – Dry Claw QSV – Oil Sealed Screw QV – Oil Sealed Vane Vacuum Filters QV – Oil Sealed Vane Systems Air System Piping AIRnet Air Treatment Dryers Air Filtration Condensate Management Vacuum Filters Industrial Gas Generators Nitrogen Generators Oxygen Generators Natural Gas Compressors QRNG Custom Engineered Packages Contact Us Today! Locate a Distributor Contact Us Machine As A Service (QOTA) Contact Us Today! 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Locate a Distributor Contact Us Sales & Service Locator Quincy Direct Locations Menu Products Rotary Screw Air Compressors QGD QGDV QGS QGSV QGV QSI Reciprocating Piston Compressors QR-25 QP QT Climate Control Single Stage Portable Air Compressor Air and Nitrogen Boosters QB – Oil Lubricated QDS Odyssey – Oil-Free Oil-Free Compressors QOF Scroll WIS Water Injected QOFT Tooth QOF Screw Coaire Scroll Vacuum Pumps QCV & QCLP – Dry Claw QSV – Oil Sealed Screw QV – Oil Sealed Vane Vacuum Filters QV – Oil Sealed Vane Systems Air System Piping AIRnet Air Treatment Dryers Air Filtration Condensate Management Vacuum Filters Industrial Gas Generators Nitrogen Generators Oxygen Generators Natural Gas Compressors QRNG Custom Engineered Packages Contact Us Today! Locate a Distributor Contact Us Machine As A Service (QOTA) Contact Us Today! Locate a Distributor Contact Us American Made Air Compressors American Made Air Compressors Quincy Parts and Services Quincy Service Complete Guardian Protective Guardian Preventive Guardian Parts Guardian Fixed Price Services Parts and Fluids Contact Us Today! Locate a Distributor Contact Us Airend Reconditioning and Care Airend Overhaul Pump Overhaul Piping Solutions Air System Piping Connectivity and Remote Monitoring ICONS ICONS CLAMP ECONTROL+ Gateway+ Machine As A Service (QOTA) Contact Us Today! Locate a Distributor Contact Us Leak Detection Resources White Papers & Case Studies Contact Us Today! Locate a Distributor Contact Us Air Compressor Systems: The Basics Contact Us Today! Locate a Distributor Contact Us Converters & Calculators Flow Converter Volume Converter Pressure Converter Temperature Converter Climate Control Compressor Sizing Analysis Simplex & Duplex Compressor Starts per Hour scfm to required inlet acfm Variable Speed Compressor Storage Compressed Air System Storage Rotary Screw Compressor Coolant Carry Over Pump Up Calculator Safety Data Sheets (SDS) Contact Us Today! Locate a Distributor Contact Us Performance Data Sheets Contact Us Today! Locate a Distributor Contact Us Green and Efficient QGV Power$ync Net$ync II Refrigerated Dryers – Old Desiccant Dryers Condensate Purifiers Drains Financing Contact Us Today! Locate a Distributor Contact Us Glossary Contact Us Today! Locate a Distributor Contact Us Blog Contact Us Today! Locate a Distributor Contact Us Videos Contact Us Today! Locate a Distributor Contact Us Literature Library Contact Us Today! Locate a Distributor Contact Us Register Your Compressor Contact Us Today! 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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. Contact Us 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 Locate A Distributor Download The Brochure Key Features Applications Performance Model Specs Easy Maintenance Warranty Video 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 37 100/110 275.1 67 37.7 66 2217 77 QSI-50 50 37 125/128 240.6 67 37.7 66 2217 77 QSI-60 60 45 100/110 338.6 67 37.7 66 2236 81 QSI-60 60 45 125/128 293.4 67 37.7 66 2236 81 QSI-75 75 55 100/110 390.2 75.8 49.9 78.8 3545 72.7 QSI-75 75 55 125/128 357.9 75.8 49.9 78.8 3545 72.7 QSI-100 100 75 100/110 512.3 75.8 49.9 78.8 3650 74.5 QSI-100 100 75 125/128 467.1 75.8 49.9 78.8 3650 74.5 QSI-125 125 90 100/110 614.7 75.8 49.9 78.8 3765 76.7 QSI-125 125 90 125/128 557.5 75.8 49.9 78.8 3765 76.7 QSI-150 150 110 110/110 769 112 77 83 7186 74 QSI-150 150 110 125/128 678.3 112 77 83 7186 74 QSI-175 175 132 110/110 870 112 77 83 7400 74 QSI-175 175 132 125/128 791 112 77 83 7400 74 QSI-200 200 160 100/110 996.9 112 77 83 7524 74 QSI-200 200 160 125/128 917.5 112 77 83 7524 74 QSI-250 250 185 100/110 1273 142 81 89 10700 80.5 QSI-250 250 185 125/128 1205 142 81 89 10700 80.5 QSI-300 300 220 110/110 1603 142 81 89 10941 80.5 QSI-300 300 220 125/128 1498 142 81 89 10941 80.5 QSI-350 350 260 110/110 1805.2 150 81 89 12300 82.5 QSI-350 350 260 125/128 1655 150 81 89 12300 82.5 QSI-400 400 315 100/110 2011.3 150 81 89 12300 83.5 QSI-400 400 315 125/128 1866 150 81 89 12300 83.5   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. Learn more about  high pressure screw air compressors . Learn more about  rotary screw air compressor maintenance . Locate A Distributor Quick Links Products Locate Sales & Service Download Literature Register Your Compressor Knowledge Center Blog Career Opportunities Join our mailing list! 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