EMAX 7.5 HP 120-Gallon Two-Stage Air Compressor ESP07V120V1

The EMAX Silent Air ESP07V120V1 is a 7.5 HP, 120-gallon two-stage air compressor built for shops that need high airflow with reduced operating noise. It delivers 31 CFM at 100 PSI and maintains 26 CFM at the 175 PSI maximum, providing the output needed for impact tools, sanders, and spray equipment throughout the workday. Its standout feature is the patented Silent Air™ noise-suppression system, which reduces intake noise by up to 50% while keeping the pump fully accessible for maintenance. Note: requires 230V single-phase power and includes a magnetic starter.

The compressor uses a pressure-lubricated cast-iron pump designed for continuous-run applications with an estimated 70,000-hour pump life. A gear-driven oil pump delivers filtered oil directly to critical bearing points, while rifle-drilled crankshafts and connecting rods provide consistent lubrication under load. The 100% cast-iron construction, including cylinders, heads, crankshaft, connecting rods, and high-pressure piston, helps manage heat and wear during demanding shop operation. A dual-belt drive, 20-inch cast-iron flywheel, and cooling fins improve efficiency and extend component life.

A strong choice for automotive repair shops, fabrication facilities, body shops, and professional garages that need dependable compressed air for extended periods. The 120-gallon vertical tank provides additional air storage, while features like the automatic dual-timer drain, pump riser, and dual-bolt belt tensioner simplify daily operation and routine maintenance.

Features

• Pressure-Lubricated Cast Iron Pump — Unlike splash-lubricated designs, the ESP07V120V1 uses a gear-driven oil pump mounted to the rear of the crankshaft to deliver continuous oil flow to every bearing point. Rifle-drilled crankshaft and connecting rods direct oil to high-friction wear areas, while the automotive-style spin-on oil filter keeps the oil clean. A liquid-filled gauge allows quick oil-pressure monitoring, and the pump holds 2 quarts using the APP4V1043TP pump assembly.
• 100% Cast Iron Construction — Major pump components are built from cast iron, including the crankcase, cylinders, cylinder heads, connecting rods, crankshaft, and high-pressure piston. CNC-machined cylinders provide precise bore alignment and concentricity to reduce oil carryover, while deep cooling fins improve heat dissipation during high-duty-cycle operation. Solid cast iron cylinder heads use deep-bored, threaded holes for strong head retention and maintain gasket sealing without retorquing.
• Heavy-Duty Cast Iron Flywheel — The 7.5 HP pump features a 20-inch cast iron flywheel with two B-style groove belts and nine large cooling fins. The added flywheel mass stores kinetic energy to reduce amp draw, while the multi-belt design increases contact area for longer belt life and the integrated fins improve pump cooling.
• Rebuildable Pistons and Connecting Rods — High-pressure cast iron pistons withstand heavy loads and resist cylinder scoring. CNC-machined solid cast iron connecting rods provide maximum rigidity at the crankshaft end, where aluminum rods are more prone to failure. Replaceable bearing inserts and wrist pins allow the rod assembly to be fully rebuilt rather than replaced. The low-pressure pistons in the two-stage design are aluminum, operating at lower stress levels of approximately 45 PSI for improved balance and efficiency.
• Four-Ring Piston Design — Two oil-control rings remove excess oil during the downstroke, while two compression rings maintain sealing and reduce blow-by. This design minimizes oil carryover, improves efficiency, and extends ring life. A rifle-drilled oil passage delivers continuous lubrication to the piston pin and bearing.
• CNC-Machined Disc Valves — Precision surface-ground concentric-ring disc valves provide reliable sealing and longer service life compared with feather or reed-style valves. The valves are designed for quick maintenance: remove the retainer, inspect the valve, and reinstall with minimal downtime. The head design also supports automatic head-unloader systems for high-duty-cycle and continuous-run applications.
• Dual-Bolt Belt Tensioner and Pump Riser — The dual-bolt tensioner allows precise belt adjustment while maintaining proper alignment and tension without pry bars. The pump-mounting riser raises the pump to improve 360-degree airflow from the flywheel, cooling the oil reservoir and allowing airflow beneath the pump.
• Electric Auto Drain — The dual-timer electric auto drain automatically removes moisture and condensate from the receiver tank. Drain intervals are adjustable from 1 to 45 minutes, with customizable open duration settings and an included air muffler for quieter discharge.

Specifications

Warranty

EMAX covers the ESP07V120V1 with a standard 1-year warranty covering parts and labor from the date of delivery, with technical assistance provided at no charge during and after the warranty period. Coverage extends to a full 5 years when the compressor is registered and maintained using EMAX SMART OIL™ according to the required service schedule — replacing the factory break-in oil within the first 70 hours, then changing oil every 1,000 hours or 6 months, whichever comes first.

The EMAX 5-Year Extended Warranty Kit (EFKIT008AWBS), sold separately, is designed for 5–10 HP Silent Air electric models and includes the SMART OIL™, filters, and maintenance components required to maintain extended warranty eligibility.

FAQ

What electrical service does it need?
The ESP07V120V1 operates on 230V single-phase power and draws 38.9 full-load amps with a 1.15 service factor. EMAX recommends a 50-amp breaker, and the unit includes a factory-installed magnetic starter, eliminating the need for a phase converter or three-phase power.

How quiet is it really?
The Silent Air™ silencer reduces intake noise — the loudest source of compressor sound — bringing operation to at or below conversational volume. It operates up to 50% quieter than a comparable open compressor while keeping the pump and components accessible for service.

Can it run continuously?
Yes. The pump is rated for continuous-run operation with a 60% duty cycle. The cylinder heads are designed to support an automatic head-unloader system for demanding, high-duty-cycle applications.

How is it delivered?
The compressor weighs 1,049 lbs and ships freight on a solid oak pallet with crate dimensions of 48" × 46" × 87".

Documents

• Piston Compressor Manual
• Warranty Statement