Industrial Air Compressors
Whether you need a rotary screw air compressor for heavy-duty commercial use or a reciprocating air compressor for a small workshop or construction work, Bi-State Compressor has a compressor to suit your needs.
We are proud to be the sole Quincy Authorized Factory Distributor of industrial air compressors in the St. Louis Metro Area. Not only have they been the global leader in air compressor technology for almost 100 years, they have also established a reputation of high reliability and innovation.


Quincy Air Compressors

Reciprocating Units
For over 80 years, Quincy Compressor has manufactured and designed high-performance systems that are recognized as the foremost industry standard in reliability. Bi-State Compressor carries a variety of industrial air compressors from Quincy, including pressure lubricated reciprocating compressors and piston air compressors. Learn more about reciprocating units.

QR-25
The Quincy QR-25™ is recognized throughout the industry as the leader, unmatched by any compressor in the field, and backed by the most comprehensive five-year warranty in the business. The QR-25 is pressure lubricated in all critical areas, runs at slower speeds and features durable cast iron construction for longer life and less downtime. Available in single and two stage options, this compressor is 100% duty cycle rated. It is pressure lubricated and manufactured with cast iron cylinders and valve seats for durability. It also features:
• Manually reversible oil pump
• Intake unloaders reduce work
• Low maintenance requirements
• Rebuildable components
• Loadless starting
• 1-25 HP
• 175 PSI Working pressure
• Five Year limited warranty
QR-25

QP
The Quincy QP series is designed for tougher 175 PSI applications where traditional splash lubrication just won’t measure up. This two-stage, heavy-duty, cast-iron compressor has an oil pump for pressure lubrication to the crankshaft, bearings and connecting rod up to the wrist pins. The pressure lubricated system allows for a smoother continuous operation. Coupled, with an attractive price, QP balances cost effectiveness with longer life to maximize your investment. Other benefits include:
• Fully pressure lubricated
• Cast-iron crankcase, cylinder and flywheel
• High efficiency intercooler
• Positive displacement oil pump
• 175 PSI Working pressure
• 3 to 15 HP
QP

QT
Leading the industry with the most actual cubic feet per minute (ACFM) per brake horsepower, the Quincy QT™ ensures more air while consuming less energy in the production process. This two stage compressor features a splash lubrication system and is 100% duty cycle rated. A one-piece aluminum head optimizes strength and dissipates heat, while Quincy’s unique valve design provides the highest volumetric efficiency available. It also features:
• Two-piece connecting rods
• High efficiency intercoolers
• Industrial class bearings
• Loadless auto stop/start
• Cast iron crankcase/cylinders
• 175 PSI Working pressure
• 5 to 15 HP
• One Year Standard Warranty
QT

Climate Control
Climate control is a very demanding market with diverse operating conditions, custom performance expectations and bottom-line accountability. Of course, consistently exceeding these stringent expectations has positioned Quincy Compressor as the leader in this market. Quincy Climate Control Systems are easy to quote, order, install and service. Quincy climate control compressor systems offer the following features:
• Ultra-dynamic gap rings
• Cast iron construction
• Two-piece connecting rods
• ASME-coded receiver tanks
• Balanced flywheel
• ½ – 20 hp, up to 100 psig service
• Single & Two Stage
• 2 ppm carryover factory certified
• High efficiency intercooler
• Intake filter/silencer
Climate Control

Single Stage
Quincy Compressor’s Single Stage series is the perfect compressor for commercial applications and do it yourself (DIY) projects around the home or garage. Single Stage series compressors feature a cast iron cylinder, crankshaft and valve plate for strength and durability. The aluminum head and design of the fins help to dissipate heat to keep the compressor running as cool as possible for longer life. Single Stage piston compressors are 100% factory tested at full pressure and shipped with ISO 150, 40 weight lubricant. They also feature:
• Start/stop pressure switch
• Cast iron cylinder & crankshaft
• Aluminum head
• Fully enclosed belt guard
• 7.1 to 12.4 acfm @ 100 psig
• 110 to 135 psi working pressure
• ASME safety valves
• Manual tank drain
• One-Year Warranty
Single Stage

Rotary Screw Air Compressors
Quincy lubricated rotary screw compressors are engineered to deliver extremely high-quality air, ensuring uninterrupted system operation while being fully NFPA 99 compliant. Quincy Air Compressor Systems are engineered to be the most cost effective in the industry, with a number of units that are fully customizable and can be designed to provide the most efficient system for the right environment. Learn MoreRotary Screw Air Compressors

QGS
The Quincy QGS offers superior compressed air performance in a compact, modern design. With a continuous 100% duty cycle, this rotary screw compressor operates without the elevated vibration and sound levels normally associated with typical piston compressors. A small footprint and lower sound levels provide increased installation flexibility, making the QGS ideal for most applications.
• 5-30 hp, Belt Drive
• 8,000 hr. premium synthetic fluid
• Standard quiet enclosure
• Integrated dryer option
• True Blue 5-Year Warranty
QGS

QGD
With a direct-drive airend design, industrial-grade enclosure and simple, intuitive controls, the Quincy QGD is designed to provide reliable compressed air under the most demanding conditions. Backed by Quincy Compressor’s 10-Year Royal Blue Warranty, the Quincy QGD carries the same rugged construction that has inspired customer loyalty for generations
• 20-50 hp, Direct Drive
• 90-226 acfm, 100-150 psig
• Expandable PLC Control
• Ease-of-maintenance design
• Industrial-grade enclosure
• 10 Year Royal Blue Warranty
QGD

QGDV 15-30 hp Gear Drive Compressors
A variable speed air compressor is equipped with a specially designed drive that controls and adjusts the operating speed. This offers a number of benefits, including delivering more constant pressure, protecting against power surges and lowering energy consumption. Many variable speed air compressor owners experience a significant reduction in their energy costs over time.
At a Glance
- Airlogic 2 Advanced control
- NEMA Premium TEFC Motor is standard
- Ease of serviceability
- Sound level as low as 66 dBA
- 5-Year True Blue Warranty
Up Close
- 70-141 acfm @ 125 psig
- 150 psig
- No belts
- Network up to 6 machines
- Premium Efficiency Airend
QGDV

QGV
The Quincy QGV provides the most stable pressure available from a compressor with 85% turndown. At the heart of all QGV compressors is a direct-drive airend with 100,000 hour design, providing low cost of ownership, easy maintenance and reliable operation. Enjoy real-time performance monitoring with graphical analysis and full-color, touch-screen control.
• 20-200 hp, Direct Drive
• 14.3-998 acfm, 75-150 psig
• Variable speed-85% turndown
• Very low power consumption
• 10 Year Royal Blue Warranty
QGV

QSI
Quincy Compressor provides you with the industry’s most reliable direct drive air compressor on the market. Robust direct drive airends, and multiple option configurations ensure that a QSI is the correct solution for any application. Industrial duty direct drive QSI air compressors take all aspects of compressor ownership and optimize them in order to provide you with most efficient compressor in the market, maximizing your return on investment.
• 20-350 hp, Direct Drive
• 90-1500 acfm, 100-150 psig
• Air or Water Cooled
• Quiet Technology
• Low specific power saves money
• 10 Year Royal Blue Warranty
• PowerSync Technology
QSI

Kobelco Oil Free Rotary Screw Air Compressors
The Kobelco KNW Series oil-free rotary screw air compressor is designed, manufactured, assembled, and tested in the United States and is delivered ready for operation. The two-stage rotary screw compressor provides completely oil-free air because no oil is allowed in the compression chambers. A factory trained field representative will supervise installation and start-up. This same representative will also train your maintenance personnel in the operation and maintenance of the assembly. Our commitment is to provide a trouble free, reliable installation of which we can both be proud. Since 2010 these products have been constructed in a “green” facility that utilizes over 1000 solar panels to produce 52% of the company’s electricity; highlighting the company’s commitment to energy conservation and the environment. From their commitment to the environment to their commitment to customer service, you can be sure that your Kolbeco Oil Free Rotary Screw Air-Compressor will meet your compressed air needs.

Air Cooled
Kobelco air cooled compressors employ a new patented Super Rotor design, which is acknowledged to be the most efficient, two-stage, oil-free rotary screw air compressor on the market. This new asymmetric rotor profile provides the lowest power consumption per cubic foot of compressed air.
Air Cooled

Water Cooled
The compressor air-end is a heavy-duty, two-stage design with each stage driven by a common gear. These components are arranged in a single modular design to form a compact unit which is mounted on vibration isolators to a structural steel base. No special foundation considerations are required.
Water Cooled

Fixed Speed
Precision machined timing gears are mounted on each rotor shaft to maintain accurate clearances between the rotors. The bearings are anti-friction type for long life and smooth operation. The electric motor is directly coupled to the input drive shaft through a flexible coupling.
50 Hz:
• H Series Air Cooled Two Stage, 24 to 2567 m3/hr
• H Series Water Cooled Two Stage 124 to 3572 m3/hr
60Hz:
• H Series Air Cooled Two Stage, 72 to 1552 cfm
• L Series Air Cooled Two Stage, 73 to 1559 cfm
• H Series Water Cooled Two Stage, 72 to 2155 cfm
• L Series Water Cooled Two Stage, 73 to 2389 cfm
Low Pressure, Single Stage, Fixed Speed -60hz
• S Series Air-Cooled Single Stage 35 psig max.
• S Series Water-cooled Singe Stage 35 psig max.
• H Series Air Cooled Two Stage, 24 to 2567 m3/hr
• H Series Water Cooled Two Stage 124 to 3572 m3/hr
60Hz:
• H Series Air Cooled Two Stage, 72 to 1552 cfm
• L Series Air Cooled Two Stage, 73 to 1559 cfm
• H Series Water Cooled Two Stage, 72 to 2155 cfm
• L Series Water Cooled Two Stage, 73 to 2389 cfm
Low Pressure, Single Stage, Fixed Speed -60hz
• S Series Air-Cooled Single Stage 35 psig max.
• S Series Water-cooled Singe Stage 35 psig max.
Fixed Speed

Variable Speed
The state-of-the-art programmable logic controller maximizes operating efficiency and versatility. Kobelco’s sound attenuated enclosure assures quiet operation. Doors are hinged and pinned allowing easy removal for inspection and maintenance.
60 Hz:
• H Series VFD, Air-Cooled Two Stage 60 to 1559 cfm
• H Series VFD, Water Cooled Two Stage 60 to 2155 cfm
• L Series VFD Air-Cooled Two Stage 60 to 1559 cfm
• L Series VFD Water Cooled Two Stage 60 to 2155 cfm
60 Hz:
• H Series VFD, Air-Cooled Two Stage 60 to 1559 cfm
• H Series VFD, Water Cooled Two Stage 60 to 2155 cfm
• L Series VFD Air-Cooled Two Stage 60 to 1559 cfm
• L Series VFD Water Cooled Two Stage 60 to 2155 cfm
Variable Speed