The Quincy QP Pro 10 HP reciprocating air compressor uses a fully pressure-lubricated, cast iron two-stage pump with a spin-on oil filter, giving it a key maintenance advantage over splash-lubricated compressors. The pump is rated to 175 PSI and runs from a 230V three-phase supply, while the horizontal 120-gallon-style tank configuration keeps the overall machine at approximately 78" L × 28" W × 55" H. Note: published materials list two different model codes—5103DS12HCA23 and 3103DS12HCA23—so confirm the exact build before ordering if a specific model number appears on your quote or purchase order.
The full-flow oil filtration system continuously removes wear particles from the circulating lubricant, helping keep the oil cleaner throughout the service interval and protecting internal pump components from abrasive contamination. The spin-on filter can be replaced quickly without specialized tools, while the oil sight glass provides an easy way to check the lubricant level during routine maintenance. Published information conflicts on whether a low-oil-pressure shutdown is included, so that feature should be confirmed before purchase if it is important to your application.
The horizontal configuration is a practical choice for shops with limited ceiling height, including bays beneath mezzanines, low roofs, or overhead door tracks. Its approximately 55" overall height keeps service points accessible at standing level, while the 78" length makes it better suited to facilities with available wall or floor space. With an 850-lb operating weight and 230V three-phase electrical requirement, the QP Pro is a strong fit for professional automotive shops, service facilities, and other applications requiring a durable two-stage compressor with straightforward long-term maintenance.
The case for lying down
A horizontal receiver solves a ceiling-height problem, not a floor-space problem. At about 55 inches tall, this machine can fit beneath a mezzanine, under a low roof, or in a bay where a vertical tank would interfere with an overhead door track. It also puts the service points closer to working height — the drain, sight glass, filter, belt guard and outlet are all within easier reach, which makes routine maintenance more convenient.
The trade-off is footprint. At 78 inches long, it requires a substantial strip of floor space, typically along a wall. If your building is short on floor space rather than ceiling height, the vertical version of this compressor may be the better choice.
Airflow, and a rule we keep
The manufacturer's specification lists a delivered-air figure at 175 PSI, but does not attach a unit of measure to the published number. We do not put performance figures on the page when we cannot verify exactly what they represent. For that reason, there is no airflow number listed here.
If your application is close to the compressor's capacity — particularly if you are sizing it around a specific tool list — ask us before ordering. We can confirm the applicable performance figure in writing for this build rather than have you make an important sizing decision from an ambiguous specification.
Siting and supply
Install the compressor on level, solid concrete with sufficient clearance for cooling airflow and routine service. Plan the route into the building before delivery: at nearly 6½ feet long, this is a machine that needs a clear approach through the doorway, not a last-minute attempt to maneuver around a tight corner.
The unit weighs approximately 850 lbs. Confirming that the floor, clearances and access route are suitable is the customer's responsibility, but it only takes a tape measure and a few minutes to verify before ordering.
Electrical supply is 230V, 3-phase, with a magnetic starter fitted. Quincy does not publish a specific breaker size; its specification directs customers to consult a certified electrician. The appropriate conductor and breaker sizing depends on factors including the installation's run length and applicable local electrical code, so have the electrical requirements confirmed before installation.
Specifications
| Model |
5103DS12HCA23 (a second code is also published - see above) |
| Motor |
10 HP, 230 Volt, 3-phase |
| Maximum pressure |
175 PSI |
| Pump |
Two-stage, belt drive, cast iron cylinders with aluminum head |
| Lubrication |
Fully pressure lubricated with spin-on oil filter and sight glass |
| Low oil shutdown |
Disputed - confirm with us before you order |
| Tank |
120 gallon, horizontal |
| Tank outlet |
3/4 inch |
| Length |
78 inches |
| Width |
28 inches |
| Height |
55 inches |
| Weight |
850 lbs |
| Warranty |
1-year factory warranty |
Perfect For
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Shops that keep equipment for years and treat oil changes as scheduled maintenance rather than something to put off.
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Low-ceiling buildings where a vertical receiver simply will not fit.
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Independent workshops with 230V, 3-phase power already available.
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Work areas where the compressor needs regular access, allowing routine service without having to move the machine.
What Is In The Box
The compressor arrives assembled, with the pressure-lubricated two-stage pump, motor, belt drive and belt guard mounted on the 120-gallon horizontal receiver. The magnetic starter, spin-on oil filter and oil sight glass are already fitted, and warranty documentation is included with the shipment.
You will need to provide the electrical feed and disconnect, piping beyond the 3/4-inch tank outlet, downstream filtration or drying if required for your application, isolation pads, and replacement oil and filters for future maintenance.
Certification, Stated Honestly
The manufacturer's certification record for this unit identifies an ASME-rated tank and UL and CSA marks. Those certifications describe the equipment as manufactured and supplied from the factory.
They do not certify your installation. Whether the electrical supply, disconnect, protection, ventilation and surrounding installation meet local code must be determined by a licensed electrician and, where applicable, the local authority having jurisdiction.
If your insurer, inspector or other authority requires specific compliance documentation, ask us before ordering. We would rather obtain the documentation in advance than have a paperwork issue appear during installation or sign-off.
Shipping and Delivery
Freight is available to the lower 48 states, with the shipping cost calculated at checkout based on the ZIP code entered. Residential delivery carries an additional residential fee. A commercial address with a loading dock or forklift will generally make unloading easier, while terminal pickup may be the most practical option for some locations.
Unloading is the customer's responsibility. The carrier delivers the approximately 850-lb machine to the designated delivery point; moving it from there requires suitable equipment such as a forklift, loading dock, or properly arranged terminal pickup.
Inspect the shipment before accepting it and document any visible damage on the delivery paperwork.
Warranty
This model includes a 1-year factory warranty. The warranty documentation supplied with the compressor defines the coverage, exclusions and any registration requirements. If you want to review those terms before ordering, ask us and we can provide the applicable documentation.
If something fails, contact us before dismantling or attempting repairs. Opening the pump, motor or starter can complicate a warranty claim even when the underlying fault appears obvious. Keep all removed parts and document the issue with photographs so the claim can be evaluated properly.
