Quincy 325 Two-Stage Air Compressor Pump
Quincy 325 Two-Stage Air Compressor Pump
A high-performance, pressure-lubricated reciprocating pump designed for continuous duty. Features a heavy-duty cast iron construction, 400–900 RPM operating range, and a maximum continuous pressure of 200 PSI (intermittent up to 500 PSI). Delivers approximately 17–19 CFM at 175 PSI depending on configuration.
Technical Specifications
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Model: 325 (QR-25 Series)
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Number of Cylinders: 2
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Number of Stages: 2
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Bore (Low Pressure): 4.5 in
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Bore (High Pressure): 2.5 in
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Stroke: 3 in
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Speed Range: 400 – 900 RPM
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Max Continuous Pressure: 200 PSI
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Max Intermittent Pressure: 500 PSI
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Oil Capacity: approx. 1.5 – 1.6 Liters (54 oz)
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Lubrication Type: Pressure Lubricated (Positive Displacement Oil Pump)
Quincy 325 Two-Stage Air Compressor Pump
The Quincy 325 is part of the QR-25 series, recognized as the industry standard for durability and ease of maintenance. It utilizes a slow-speed design to reduce heat and wear, resulting in a longer operational life compared to higher-RPM units. The pump is fully rebuildable, featuring individually accessible valves and a positive displacement oil pump for consistent lubrication to all critical components.
Key Features
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Cast Iron Construction: Head and cylinders are manufactured from high-tensile cast iron for maximum thermal stability and strength.
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Pressure Lubrication: Includes a manually reversible oil pump and an automotive-style spin-on oil filter (on select configurations) for superior protection of bearings and rods.
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Loadless Starting: Equipped with hydraulic or head unloaders to minimize motor strain during startup.
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Slow-Speed Operation: Operates at lower RPMs than standard compressors, producing more CFM per horsepower with less heat generation.
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Maintenance Friendly: Features individual valve pockets for easy inspection and service without removing the cylinder head.
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