EMAX ES05V080I1 5 HP Silent Air | 19 CFM | 230V 1Ph | 80 Gal

Pressure-lubricated two-stage pump | 19 CFM at 100 PSI | 80-gallon vertical tank | Single-phase

A horsepower label does not tell the whole story. The EMAX ES05V080I1 E350 Silent Air is for shops that want to step beyond an entry-level splash-lubricated piston compressor. It combines a pressure-lubricated cast-iron pump, substantial 80-gallon receiver and factory-installed Silent Air™ intake silencer.

Key Features and Benefits

• 5 HP, 19 CFM at 100 PSI: Published output for sizing pneumatic tools and equipment.
• Pressure-lubricated two-stage cast-iron pump: A significant design step up from splash-lubricated E250 models.
• 80-gallon vertical receiver: Air storage in a space-conscious footprint.
• Patented Silent Air™: Intake noise suppression with accessible service components.
• Single-phase motor: An option for facilities without three-phase electrical service.
• Vibration isolator pads: Included in the manufacturer pricing description.

Pressure-Lubricated Pump: Engineered for Long-Term Service

The E350's gear-driven oil pump supplies pressurized oil to critical internal bearing surfaces. Rifle-drilled passages in the crankshaft and connecting rods route lubricant to key wear points. An automotive-style spin-on oil filter helps remove contaminants, while a liquid-filled oil-pressure gauge provides a way to monitor lubrication. This is a significant engineering distinction from splash-lubricated compressors, although routine oil and filter changes remain essential.

Cast-Iron Construction and Rebuildable Components

EMAX describes cast-iron crankcases, heads, cylinders, crankshafts, connecting rods and high-pressure pistons in its pressure-lubricated pump family. The low-pressure piston in its two-stage pumps is aluminum for reduced reciprocating weight. The four-ring piston design uses two compression rings and two oil-control rings to support sealing and limit oil carryover.

Precision-machined concentric disc valves are designed to be removed for inspection and service. Replaceable bearing inserts and wrist pins support repairability of the connecting-rod assembly.

Heavy-Duty Flywheel and V-Belt Drive

EMAX describes a 16-inch cast-iron flywheel with six cooling fins and two B-section belt grooves for its 5 HP pressure-lubricated pump family. The flywheel supports cooling airflow and belt power transfer. Maintain correct belt tension and alignment as part of routine service.

Head Unloader Options and Duty Cycle

EMAX offers head-unloader arrangements on certain compressor configurations to unload the pump at a preset pressure while the motor continues turning. Do not assume head unloaders are installed on the ES05V080I1 without confirming its factory configuration. This feature alone does not establish a 100% duty-cycle rating.

Silent Air™: Quieter Operation Without an Enclosed Cabinet

EMAX's patented Silent Air™ system addresses noise at the intake using baffle plates and filter media. EMAX advertises noise reduction of up to 50% for the technology; actual results vary by model and installation. Unlike a fully enclosed cabinet, the system keeps the pump and motor accessible.

Watch the Silent Air demonstration and technology explanation.

E250 vs E350 vs E450: Which 5 HP Compressor Is Right?

E250 Silent Air: A value-focused splash-lubricated compressor with a 60-gallon tank. E350 Silent Air: Pressure-lubricated pump, 80-gallon receiver and the same listed 19 CFM at 100 PSI. E450 Silent Air: A further step up with automatic tank drainage, belt-tension adjustment and additional controls. The right choice depends on duty cycle and maintenance preferences, not just CFM.

Technical Specifications

Best-Fit Applications

• Automotive service and repair shops
• Cabinet shops and general woodworking
• Fabrication and industrial maintenance
• Commercial shops with single-phase electrical service

Our sizing advice: Add the CFM of tools that may run simultaneously, confirm required pressure at the point of use, and estimate how often the compressor must run. An 80-gallon tank does not compensate for insufficient pump output.

Build a Complete Compressed-Air System

For moisture-sensitive applications, consider a matched compressed air dryer and inline air filtration. Browse maintenance supplies to keep your equipment serviced. Ask us which extended-warranty service kit applies to this exact model.

Frequently Asked Questions

What makes the E350 different from the E250?

The E350 has a pressure-lubricated two-stage pump and 80-gallon tank, versus the 5 HP E250 model's splash-lubricated pump and 60-gallon tank.

How much air does it deliver?

19 CFM at 100 PSI. Select based on your equipment's simultaneous CFM, working pressure and duty cycle.

Is it single-phase?

Yes. Confirm the electrical voltage from EMAX and the nameplate before installation.

Is Silent Air included?

Yes. The patented intake silencer is installed on this model.

Does it include an air dryer?

No. Air drying and filtration are selected separately.

Would the E450 be better?

The E450 adds an automatic tank drain, belt tensioner and additional controls, while its corresponding 5 HP model has the same published 19 CFM at 100 PSI.

Is the compressor 100% duty cycle?

Do not assume continuous-duty operation. We can help assess your operating schedule and recommend the appropriate compressor.

What maintenance is required?

Follow manufacturer oil and filter service intervals, inspect belts, and drain the receiver. Warranty coverage depends on the applicable EMAX terms.

Why Buy from Compressed Air Advisors Online?

Questions about compressor sizing, installation or air treatment? Call 877-247-2381 for guidance on your application.