Quincy Air Compressor Max 15 HP 120 Gallon Two Stage 230V 3 Phase

The Quincy QT MAX 15 HP compressor combines a 15 HP motor with a splash-lubricated cast-iron two-stage pump, 120-gallon horizontal receiver, and 175 PSI maximum pressure. The pump operates at a deliberately low 1,750 RPM, reducing piston speed, heat, and mechanical wear while keeping operating noise lower than faster-running compressor designs. Quincy rates this pump for more than 50,000 hours of service, making its slow-running configuration a key reason to consider it for demanding shop applications. The package also includes a magnetic starter with thermal overload protection and a low-oil cut-off switch for added protection against electrical overload and low lubrication conditions.

The pump’s oversized oil reservoir supports its splash-lubrication system, while the oil sight glass makes routine level checks straightforward. Keeping the pump at a conservative speed helps the splash system distribute oil effectively without requiring a separate oil pump or filter. Air management is equally important: a high-efficiency finned intercooler cools compressed air between the two stages, reducing the temperature entering the second stage and helping the pump handle sustained operation. Integrated air-cooled aftercoolers then lower discharge temperature before the air reaches the receiver, allowing more moisture to condense at the compressor instead of downstream in the shop air lines.

This compressor is well suited to established automotive repair shops, fleet and municipal workshops, fabrication facilities, and body shops with 230V three-phase power and a need for substantial air reserve. The 120-gallon receiver stores compressed air at up to 175 PSI, providing additional reserve when several tools or workstations draw air simultaneously and allowing the compressor to remain unloaded longer between cycles. The result is a system designed around slow pump speed, high storage capacity, effective cooling, and protection features that support long-term shop use.

Why the Pump Runs at 1,750 RPM

The 1,750 RPM pump speed is intentionally conservative. Lower piston speed helps manage heat and wear during operation, while the large cast-iron pump delivers the required output at a slower speed.

The tradeoff is size and weight: this unit weighs 923 lbs and requires a solid installation area.

Splash Lubrication & Oversized Reservoir

This pump uses splash lubrication with an oversized oil reservoir. Oil is distributed through the crankcase by connecting-rod dippers, eliminating the need for a separate oil pump or oil filter.

The oil sight glass makes level checks simple, and maintaining the correct oil level is especially important with a splash-lubricated pump.

Intercooler & Aftercooler

A high-efficiency finned intercooler cools the air between compression stages, helping control temperatures through the two-stage compression process.

Integrated air-cooled aftercoolers reduce discharge temperature before air reaches the receiver, allowing more moisture to condense at the compressor instead of downstream in the air system.

Will It Fit?

• Footprint: 78" L × 28" W
• Height: 55"
• Weight: 923 lbs
• Power: 230V, 3-phase, 42 A
• Tank outlet: 1"
• Receiver: 120 gallons

Allow service clearance around the drain, oil fill and belt guard. The unit must be installed on a level, solid surface.

Quincy does not publish a specific breaker size for this build. Have a qualified electrician size the electrical feed, disconnect and overcurrent protection according to the installation conditions and local code.

Customer responsibilities: site preparation, electrical feed, disconnect and connection to the shop air main. This product page is not an installation specification.

Pressure & Air Reserve

Rated for 175 PSI with a 120-gallon horizontal receiver. The larger receiver provides stored air capacity between pump cycles and helps maintain available air when multiple tools are drawing simultaneously.

Ideal Applications

• Repair shops with 230V three-phase power
• Fleet and municipal workshops
• Fabrication and body shops
• Shops replacing smaller or failed compressors

What's Included

• Splash-lubricated cast-iron two-stage pump
• 15 HP motor
• 120-gallon horizontal receiver
• Magnetic starter with thermal overload protection
• Integrated air-cooled aftercoolers
• High-efficiency finned intercooler
• Oil sight glass
• Low-oil cut-off switch

Not included: air dryer, shop piping, point-of-use filtration, regulators, disconnect or electrical feed.

Specifications

Certification, Stated Clearly

The manufacturer’s records list the receiver under the ASME pressure-vessel code and list CSA among the unit’s markings. These should be interpreted separately: ASME relates to the pressure vessel’s construction and testing, while CSA relates to applicable product/electrical safety requirements.

Neither marking certifies the complete machine for every installation. If your insurer, fleet policy or local jurisdiction requires a specific listing, confirm the requirement against the unit’s data plate before purchase. We can help review the factory documentation if needed.

Before You Order — Please Confirm

• Automatic tank drain: One specification lists an automatic electronic tank drain, while another says no drain valve is fitted. If a factory-installed automatic drain is important to you, confirm the configuration before ordering.
• Air delivery: No verified CFM figure is published for this specific listing. We have a value for the model, but the source does not provide a verifiable unit of measure, and we will not copy a rating from a different voltage configuration. Ask us for the factory-rated CFM.
• Cooling fan: The product description mentions a temperature-controlled variable-speed fan, but our specification data does not confirm it. We have therefore left the claim out until verified.

Shipping & Delivery

Ships by freight to the lower 48 states, with the live rate calculated at checkout. At 923 lbs, the compressor ships palletized, so plan for a forklift, loading dock or freight-terminal pickup. Residential deliveries may incur an additional fee.

Inspect the compressor before signing. Check the tank, feet, guards, gauges and cooler fins, and document any damage on the bill of lading with the driver present.

Warranty

The compressor includes a 1-year factory warranty, with potential extension to a 3-year Quincy “No Bull” warranty under the manufacturer’s published terms.

The warranty handbook governs eligibility and conditions, so confirm that your installation meets the requirements rather than assuming the extended coverage applies automatically.

If a failure occurs, contact us before opening or disassembling the pump. Allow the manufacturer to evaluate the issue before performing major repairs, as unauthorized disassembly can affect warranty eligibility.

Warranty Details