EMAX 7.5 HP 120-Gallon 24 CFM Three-Phase Rotary Screw Air Compressor with 30 CFM Refrigerated Dryer and Swing Arm, 208–230V, ERIK070003-208

The EMAX 7.5 HP three-phase rotary screw air compressor pairs a continuous-duty screw air end with an integrated refrigerated air dryer on a 120-gallon horizontal receiver tank, finished in matte black. It is built for shops and light-industrial operations that run air tools, equipment, or a production line through the workday and need steady, dry air without a piston compressor's constant start-stop cycling.

At its core is an oil-injected rotary screw air end engineered for a 100% duty cycle, so it runs continuously instead of loading and unloading like a reciprocating pump. Screw air ends are built to produce continuous, steady airflow, which suits applications where consistent pressure matters more than short peak bursts. This unit is rated at 24 CFM, with a maximum working pressure of 145 PSI.

The refrigerated dryer sits alongside the compressor cabinet on a swing-arm mount. The dryer hinges away from the compressor so the cabinet opens up for service, which keeps routine maintenance and component access straightforward even in a tight equipment room. EMAX uses this swing-arm mount across its 5 HP through 20 HP package models.

The integrated dryer is rated to handle 30 CFM of airflow and removes moisture before it reaches your tools and air lines. A condenser fan circulates ambient air across the coil to cool the refrigerant that pulls heat from the compressed air, while a separate circulating fan cools the compressor oil and air-end discharge before it enters the tank — reducing wear and excess moisture in the system.

A digital controller manages operation and shows maintenance and alarm codes at a glance, with an emergency-stop button on the cabinet face. A dual-timer electric auto drain expels condensate from the receiver tank on an adjustable cycle — set anywhere from 1 to 45 minutes, with a separate setting for how long the drain stays open — and an air muffler keeps that discharge quiet. Automatic draining clears moisture without anyone having to remember to crack a manual valve.

• Continuous-duty rotary screw air end — oil-injected male and female rotors engineered for up to 100% duty cycle, delivering a steady 24 CFM through long run cycles.
• Integrated 30 CFM refrigerated dryer — removes moisture before it reaches your air lines, with a condenser fan circulating ambient air across the coil.
• Swing-arm dryer mount — the dryer hinges away from the compressor cabinet for easier service access.
• Dual-belt drive — a two-belt system using wider B- and C-width belts spreads the load across more surface area, lowering belt tension, reducing strain on the motor and compressor bearings, and cutting noise and vibration for longer service life.
• Dual-timer electric auto drain — adjustable 1-to-45-minute drain cycles with a set open duration, plus an included air muffler for quiet discharge.
• Fixed-speed operation — runs at a constant 1750 RPM rather than varying motor speed.
• TEFC motor — a totally enclosed, fan-cooled three-phase motor.

• 7.5 HP rotary screw air compressor on a 120-gallon horizontal receiver tank
• Integrated refrigerated air dryer on a swing-arm mount
• Dual-timer electric auto drain with air muffler
• Hydraulic connection hoses
• Break-in oil and filters for initial run-in
• Rotary screw compressor and refrigerated dryer manuals

Both the compressor and the dryer carry a 1-year standard warranty from the date of delivery, covering defects in materials and workmanship along with one year of warranty labor from an authorized technician. On the compressor, that standard coverage includes the rotary screw pump and all components, including the electric motor. EMAX covers ground freight on warranty parts for the first 180 days; after that, freight on warranty parts is the owner's responsibility.

Longer coverage is available through EMAX's extended and lifetime plans, which require enrolling in the plan and following the scheduled maintenance program (EMAX SMART OIL auto-ship and filter changes). The extended compressor plan raises coverage to 10 years on the rotary screw pump and 10 years on the three-phase motor, with other components covered for 5 years, and a Limited Lifetime plan on the pump is also offered. The dryer's standard 1-year coverage can be extended to 3 years under its own plan. Full terms, conditions, and maintenance requirements are in the warranty documents below.

What electrical service does it need?

The unit runs on 208–230V three-phase power. It draws 21.6 full-load amps at a 1.15 service factor, with a 132-amp locked-rotor draw, and EMAX specifies a 30-amp branch breaker. Confirm your shop has three-phase service before ordering.

Can it run continuously?

Yes. The rotary screw air end is rated for a 100% duty cycle, so it is designed to run continuously rather than cycling on and off like a piston compressor.

Does it include an air dryer?

Yes. A refrigerated air dryer rated for 30 CFM is mounted to the package on a swing arm and removes moisture before the air reaches your lines.

What maintenance does it need?

The unit ships with break-in oil and filters that should be changed at 600 hours, then on the schedule in the manual. Following EMAX's maintenance and SMART OIL program is also what keeps the extended and lifetime warranty plans in force.

This compressor ships by freight and requires three-phase electrical service and professional installation. To arrange freight delivery or talk through your shop's setup, contact sales@mygaragesupplies.com or call 307-381-1810.

• Rotary Screw Compressor Manual
• Refrigerated Dryer Manual
• Compressor Warranty
• Dryer Warranty