Reciprocating/Piston
Pressure Lubricated Reciprocating/Piston Air Compressors
A reciprocating air compressor is a positive displacement compressor that uses a crankshaft-driven piston and cylinder to compress the air. A single-stage reciprocating piston compressor works by drawing the air into the cylinder where it is compressed in a single piston stroke of approximately 120 PSI and then sent to a storage tank. A two-stage compressor includes an additional step where the air is compressed by a second, smaller piston to a pressure of up to 175 PSI.
QR-25
Our premium, top-of-the-line pressure lubricated piston air compressor is the QR-25. It’s a heavy-duty compressor that is pressure lubricated in all critical areas and delivers up to 25 hp. Available in single- and two-stage versions, the QR-25 is designed to operate at slower speeds and is equipped with intake loaders that minimize work. The rugged cast iron construction ensures a long life expectancy, less downtime and easier maintenance. Other key features include loadless starting, a manually reversible oil pump and rebuildable components. Seen as the industry standard in piston compressor technology, the performance of Quincy’s QR-25 is legendary.
- 1-25 hp
- 3-95 acfm, 20-500 psig intermittent
- Single & Two Stage
- Cast iron full pressure lubricated
- 5-Year limited warranty
QP
The QP is a two-stage pressure lubricated air compressor featuring a working pressure of 175 PSI for your more challenging air compression applications. Key QP features include a cast iron crankcase, flywheel and cylinder, reliable positive displacement oil pump and high efficiency intercooler. The QP is available in a “standard” configuration Pro Unit, as well as a “fully loaded” Max Unit.
- 3 to 15 HP
- 175 PSI Working pressure
- Oil filter and pressure gauge
- Fully pressure lubricated
QT 
Our two-stage splash lubricated QT piston air compressor models are designed to deliver higher volumes of air while also consuming less energy. The special valve design provides the highest possible volumetric efficiency and features super-strong stainless steel valves. The balanced counter-weighted crankshaft ensures smooth operation and fewer maintenance headaches. The cast iron construction also assures a long compressor lifespan. As with our QP line, the QT is available in Pro Unit and Max Unit options.
- 5-15 hp
- 17-206 acfm, 175 psig maximum
- Two Stage
- Cast iron splash lubricated
Climate Control
Our application specific air compressor models include climate control systems that are designed and engineered for efficient and effective climate control in all types of operating environments. The options include Simplex Splash Lubricated Tank-Mount models that include an ASME pressure relief valve, a pressure gauge, a manual shut-off at tank discharge and a manual tank drain. A Duplex Splash Lubricated Tank-Mount model with a Duplex Control Panel and optional dryer is also available.
- 0.5-20hp
- 4-88 acfm, up to 100 psig service
- Single & Two Stage
- 2 ppm carry over factory certified
Single Stage
Our stationary and portable single-stage piston air compressors are ideally suited for commercial compressed air applications and smaller DIY projects. Despite their small size, they feature a rugged cast iron construction that ensures maximum durability. Key product features include a cast iron cylinder and crankshaft, an aluminum head and a fully enclosed belt guard.
- 4 to 12.4 acfm
- 110 to 145 psi
- Single Stage
