Quincy Air Compressor 50 HP Tankless Rotary Screw with Dryer

The Quincy QGS 50 HP rotary screw compressor with integrated refrigerated dryer is built for facilities that need continuous compressed air with built-in moisture control. Part #4152016908 ships configured for 460V 3-phase power and includes a conversion kit for 230V 3-phase, allowing the same unit to support either electrical supply when converted by a licensed electrician. Rated for a 100% duty cycle, this gear-driven rotary screw package is designed to run continuously and connects to a separate receiver tank, which must be selected based on your system requirements. Note: no storage tank is included, and the unit measures approximately 71.3" L × 32.7" W × 61.3" H with a shipping weight of 1,437 lbs.

The gear-driven airend eliminates belt tensioning and replacement while reducing mechanical losses between the motor and compressor, making it well suited for long operating hours. The integrated refrigerated air dryer removes moisture before compressed air enters your distribution system, helping protect piping, pneumatic tools, and finished work from water contamination. Additional features include an aftercooler, Infologic2 Basic Controller, oil sight glass, spin-on fluid filter, and low-oil shutdown protection. The controller provides pressure, temperature, and dewpoint monitoring, programmable operation, auto-restart capability, and networking support for up to six QGS units.

This compressor is a strong fit for production facilities, automotive and industrial shops, paint operations, blasting applications, and plants requiring reliable dry air throughout the workday. It is especially useful for businesses that already have air storage or want to size their receiver separately rather than purchase a fixed package. Because this is a large industrial unit, installation requires proper floor support, ventilation, electrical planning, and service clearance around the cabinet before delivery.

Will It Fit? Siting & Power

Floor and access. The cabinet measures 71.3" L × 32.7" W × 61.3" H and weighs 1,437 lbs. Plan for proper rigging, a level pad, and service clearance around the hinged doors and removable panels.

Electrical. Rated for 230/460V AC, 3-phase. Quincy does not publish amp draw or breaker size; the specification directs buyers to consult a certified electrician. Your electrician should size the feeder and overcurrent protection from the machine nameplate before delivery.

Heat and ventilation. With a 100% duty cycle, this machine is designed for continuous operation and requires appropriate room ventilation. Confirm the installation site can handle the compressor's heat output before delivery.

Tankless by Design

Tank capacity is listed as 0 gallons, and no receiver is included. This is intentional. On a rotary screw compressor, the receiver primarily smooths demand fluctuations and supports the air treatment system rather than serving as a buffer for piston cycling.

If you already have a receiver—or want to size one around your actual demand—buying it separately gives you that flexibility. If you do not, budget for one: this tankless package is not a complete air system by itself.

Gear Drive & Integrated Dryer

The airend is gear driven, eliminating scheduled belt tensioning and replacement.

A refrigerated air dryer is integrated into the package, removing moisture from the compressed air before it reaches your plant piping. The unit also includes an aftercooler, oil sight glass, low-oil shutdown on both engine and pump, and a spin-on fluid filter.

The Infologic2 Basic Controller is programmable, supports auto-restart, and can network up to six QGS units. The display provides pressure, temperature and dewpoint readings.

Perfect For

• Production shops — 100% duty cycle for continuous operation.
• Facilities with existing air storage — no redundant receiver.
• 230V or 460V three-phase sites — conversion kit included.
• Paint, blasting and instrument air — integrated refrigerated dryer included.

What's in the Box

• Gear-driven QGS rotary screw compressor
• Infologic2 Basic Controller and display panel
• 100% duty cycle TEFC motor
• Integrated refrigerated air dryer
• Aftercooler
• Oil sight glass and spin-on fluid filter
• Low-oil shutdown on engine and pump
• 230V-3 conversion kit; unit ships wired 460V-3

Not included: receiver tank, installation, wiring or commissioning.

Specifications

Certification, Stated Honestly

The specification sheet records an ASME certification for this unit. ASME coding normally applies to a pressure vessel, but this configuration ships without a receiver tank. If your inspector or insurer requires an ASME-coded vessel, that requirement applies to the receiver you connect to the compressor. Ask us to confirm exactly what the certification on this SKU covers before ordering.

Our product data does not record an independent electrical or equipment safety listing for the packaged machine. If your jurisdiction, insurer or corporate standard requires a third-party listing, verify that requirement before purchase.

Shipping & Delivery

Ships by freight within the lower 48 states, with shipping calculated at checkout based on your delivery address. At 1,437 lbs, this is a dock-or-forklift delivery. If you cannot unload it at your site, terminal pickup is an alternative.

Residential deliveries incur a residential fee where applicable.

Inspect the crate before signing. Photograph any damage and record it on the bill of lading while the driver is present. A clean signature can make concealed-damage claims difficult to pursue.

Warranty

Standard coverage is 1 year for consumer and commercial use. An extended 3-year factory warranty is available, while the True Blue 5-Year Warranty applies when the machine is commissioned by a Quincy-authorized start-up provider.

Because the longest warranty depends on authorized commissioning, arrange this before the machine is energized.

Warranty Details