Quincy Air Compressor 80 Gallon

The Quincy 5 HP two-stage compressor combines an industrial cast-iron pump with an 80-gallon receiver and 230V single-phase operation, giving shops that lack three-phase service access to a compressor built for demanding use. Its 60-amp breaker requirement is especially useful when planning an installation because you can check your existing electrical capacity before committing to the machine. The pump runs at just 942 RPM and is rated for more than 60,000 hours, with a belt drive that reduces pump speed and isolates the crankshaft from direct motor shock loads.

The two-stage design compresses air in steps, with a high-efficiency fin-and-tube intercooler cooling the air between the low- and high-pressure stages before the second stage completes compression to a maximum of 175 PSI. A mounted air-cooled aftercooler then reduces discharge temperature before the air enters the receiver, encouraging moisture to condense in the tank instead of traveling into the shop's piping and tools. The cast-iron pump body provides mass around the working components, while aluminium heads help dissipate heat. Graphite cylinder and head gaskets are designed to maintain sealing at the temperatures and pressures generated during operation.

This compressor is a strong fit for home and hobby garages, independent repair shops, rural workshops, and restoration or fabrication spaces that have 230V single-phase service but do not want to invest in a three-phase upgrade. The combination of a large receiver, two-stage compression, and 175 PSI capability suits applications where steady pressure matters throughout longer work sessions. It is particularly useful for older commercial buildings, farm shops, and serious home garages where electrical service is the limiting factor rather than the need for industrial-grade compressed air.

A Slow-Running Pump

The motor runs at 942 RPM, with the belt drive reducing pump speed for the compressor’s duty. Quincy rates the pump for more than 60,000 hours.

The pump uses a cast-iron body with aluminum heads, belt drive, and an industrial two-stage design. The package also includes an oil sight glass and spin-on oil filter for routine maintenance.

Two Stages, Cooled Between and After

Compression occurs in two stages. Air passes through the low-pressure cylinder, then the high-efficiency fin-and-tube intercooler, before entering the high-pressure cylinder. Maximum rated pressure is 175 PSI.

A mounted air-cooled aftercooler reduces discharge temperature before the air reaches the receiver, helping moisture condense in the tank rather than downstream piping. Graphite cylinder and head gaskets are specified for sealing at operating temperatures and pressures.

Will It Fit?

• Electrical: 230V single-phase with a 60-amp breaker. Confirm panel capacity before ordering.
• Footprint: 37" W × 24" D.
• Height: 74" overall. Allow additional clearance for service.
• Weight: 680 lbs dry. Install on a level slab and anchor as required.
• Outlet: 3/4" tank outlet.
• Access: Measure doorways and the delivery route. Account for crate dimensions, not just the machine.

Site preparation is the buyer’s responsibility. Confirm electrical capacity, slab and anchoring requirements, ventilation, permits and inspections with your electrician and local authority before installation.

Perfect For

• Home and hobby shops with 230V single-phase power
• Repair shops without three-phase service
• Farm and ranch workshops
• Restoration and fabrication work requiring an 80-gallon receiver and steady compressed air

What’s in the Box

• Vertical 80-gallon receiver
• Two-stage cast-iron pump with aluminum heads
• 5 HP industrial motor
• Magnetic starter with thermal overload protection
• Fin-and-tube intercooler
• Mounted air-cooled aftercooler
• Spin-on oil filter
• Stainless steel reed valves with valve bumpers
• Graphite cylinder and head gaskets
• Oil sight glass

Not included: air dryer.

Specifications

Certification, Stated Plainly

The receiver is built to the applicable North American pressure-vessel code, and the machine carries a CSA mark.

Supplier data also references a North American third-party electrical listing, but the record is not clear enough for us to state the specific listing with confidence. If your insurer or local inspector requires a named listing mark, ask us before ordering and we’ll confirm what is shown on the data plate.

Confirm Lubrication & Drain Before Ordering

Published information conflicts on two important points:

• Lubrication: The manufacturer’s feature list describes a fully pressure-lubricated system with a gerotor positive-displacement oil pump, while the structured specification lists splash lubrication. These are different designs. If pressure lubrication matters to your purchase, confirm the shipping configuration with us first.
• Tank drain: The feature list and detailed specifications state an electronic automatic tank drain, while a summary field lists none. If an automatic drain is required, confirm that it is fitted to the unit being shipped.

Shipping & Delivery

Palletized freight to the lower 48. Plan for a forklift or loading dock, as the carrier delivers to the truck. Terminal pickup is also available for sites without unloading equipment.

Residential delivery carries an additional fee. Tell us the delivery type when ordering so the freight quote is accurate.

Inspect the crate and machine before signing. Photograph damage such as a split skid, leaning load or dented sheet metal, and record it on the bill of lading while the driver is present.

Warranty

Quincy provides a 1-year factory warranty for consumer and commercial use. Purchasing the EWK-4 Maintenance Kit with the compressor extends coverage to the 3-year “No Bull” warranty, including on-site service and labor. The unit must also be registered with Quincy for the extension to apply.

Warranty Details