Description

Hertz IMPETUS 75 – 100 HP Two-Stage Rotary Screw Air Compressor – 500 CFM @ 125 PSI

Short Product Description

The Hertz IMPETUS 75 is a 100 HP fixed-speed, two-stage oil-injected rotary screw air compressor delivering 500 CFM at 125 PSI. Engineered for demanding industrial applications, the IMPETUS 75 combines a direct-coupled two-stage screw airend, IE4 high-efficiency motor, air-cooled design, and advanced compressor controls to provide dependable continuous-duty performance with excellent energy efficiency.

Product Description

The Hertz IMPETUS 75 is built for industrial facilities that require a large, reliable supply of compressed air while keeping energy consumption and long-term operating costs under control.

Powered by a 100 HP / 75 kW IE4 electric motor, the IMPETUS 75 delivers 500 CFM at 125 PSI through an advanced two-stage oil-injected rotary screw airend.

The two-stage design divides the compression process between two screw stages rather than completing the entire pressure increase in a single stage. This reduces the compression ratio across each stage, allowing the compressor to operate with lower internal forces, lower rotor speeds, and improved efficiency.

A direct-coupled drivetrain eliminates conventional drive belts, reducing transmission losses and routine maintenance. The IMPETUS 75 also incorporates high-efficiency air and oil cooling, two-stage inlet filtration, an integrated water separator, and advanced electronic controls for dependable operation in demanding industrial environments.

Select Your Configuration

Operating Pressure

125 PSI / 8.5 Bar

Air Delivery

500 CFM / 14.16 m³/min

Motor

100 HP / 75 kW

Cooling

Air Cooled

Air Connection

2" NPT

Key Features

• 100 HP / 75 kW
• 500 CFM @ 125 PSI
• Two-stage oil-injected rotary screw airend
• Fixed-speed operation
• Direct-coupled drivetrain
• IE4 high-efficiency electric motor
• Air-cooled design
• Up to 10% improved energy efficiency from two-stage compression
• Up to 10% increased airflow from two-stage compression
• Low rotor speeds for increased service life
• Integrated water separator
• Two-stage inlet air filtration
• Advanced compressor controller
• Internal Modbus communication
• Multi-compressor synchronization
• Low operating noise
• Designed for continuous-duty industrial applications
• Optional heat recovery available from the manufacturer
• Optional integrated dryer available from the manufacturer

Two-Stage Rotary Screw Technology

The IMPETUS 75 uses a two-stage screw compression system designed to improve compressed air efficiency and increase airflow.

By dividing compression between two stages, the compressor operates with a lower compression ratio across each screw stage.

Benefits include:

• Up to 10% improved energy efficiency
• Up to 10% greater airflow
• Near-isothermal compression
• Reduced axial forces
• Reduced compression forces
• Lower rotor speeds
• Lower internal mechanical stress
• Reduced vibration
• Longer airend service life
• Improved operating efficiency

The lower rotor speeds and reduced internal loading make the IMPETUS 75 particularly well suited for demanding continuous-duty applications.

Direct-Coupled Drive

The IMPETUS 75 uses a direct-coupled motor and airend configuration.

This eliminates the belts commonly found on traditional rotary screw compressors and reduces power transmission losses.

Benefits include:

• No drive belts
• No belt replacements
• No belt tension adjustments
• Reduced maintenance
• Fewer wear components
• Reduced transmission losses
• Lower vibration
• Reliable power transfer

An elastomer coupling provides dependable power transmission while helping reduce vibration between the motor and airend.

IE4 High-Efficiency Motor

The fixed-speed IMPETUS 75 is powered by an IE4 efficiency-class electric motor designed for demanding industrial operation.

Motor features include:

• 100 HP / 75 kW
• IE4 efficiency class
• Optimized motor cooling
• B-class temperature rise
• Heavy-duty industrial construction
• Designed for continuous-duty operation

The high-efficiency motor helps reduce electrical losses while delivering dependable power to the two-stage screw airend.

High-Efficiency Air-Cooled Cooling System

The IMPETUS 75 uses an air-cooled cooling system designed for reliable operation in demanding industrial environments.

Cooling features include:

• High-efficiency air and oil heat exchangers
• Radial cooling fan
• Low-speed fan operation
• Reduced cooling fan noise
• Designed for ambient temperatures up to 113°F / 45°C
• Efficient heat removal during continuous-duty operation
• No cooling-water supply required

Advanced Compressor Controller

The fixed-speed IMPETUS controller provides operators with convenient access to compressor operating information, scheduling, alarms, and system controls.

Controller features include:

• Synchronization capability for up to 5 compressors
• No external master controller required for compatible multi-compressor operation
• Programmable weekly scheduler
• Up to 3 start/stop intervals per day
• Internal Modbus communication
• User-friendly interface
• Last 20 alarms stored in alarm history
• Periodic maintenance warnings
• Maintenance log records

This makes the IMPETUS well suited for both standalone compressor installations and larger multi-compressor systems.

Two-Stage Air Filtration

The IMPETUS 75 incorporates a two-stage inlet filtration system designed to protect the compressor airend while maintaining low inlet pressure loss.

Features include:

• Initial filtration stage
• Precision filtration stage
• 99.9% particle separation efficiency
• Low pressure loss
• Initial pressure drop below 3 mbar
• Long filter service life
• Easy maintenance access

Reduced inlet restriction helps maintain compressor efficiency while protecting critical internal components.

Integrated Water Separator

The IMPETUS features an integrated moisture separator designed to efficiently remove entrained water from the compressed air stream.

Features include:

• Up to 99% separation efficiency
• Effective performance in hot and humid conditions
• Compact integrated construction
• Minimal pressure loss
• High-efficiency moisture removal

Low separator pressure loss helps preserve overall compressor efficiency.

Oil Filtration System

The IMPETUS oil filtration system is designed for easy service and reduced environmental impact.

Features include:

• Non-metallic oil filter
• Environmentally friendly construction
• Recyclable filter design
• Aluminum housing
• Compact construction
• Easy maintenance access

Low Operating Noise

The Hertz IMPETUS 75 operates at approximately 70 dB(A).

The enclosed compressor cabinet, two-stage airend, direct-coupled drivetrain, lower rotor speeds, and efficient cooling system all contribute to reduced operating noise and vibration.

Technical Specifications

Free air delivery is measured according to ISO 1217:2009 Annex C under Hertz specified reference conditions. Manufacturer specifications are subject to change without notice.

Ideal Applications

The Hertz IMPETUS 75 is well suited for applications including:

• Manufacturing plants
• CNC machining facilities
• Metal fabrication
• Automotive manufacturing
• Plastics manufacturing
• Packaging facilities
• Woodworking operations
• Food and beverage production
• Multi-shift manufacturing facilities
• Large industrial compressed air systems
• Facilities requiring approximately 500 CFM at 125 PSI

Why Choose the Hertz IMPETUS 75?

The IMPETUS 75 combines two-stage compression, direct drive, IE4 motor efficiency, and 500 CFM of air delivery in a robust industrial compressor package.

Key advantages include:

• High airflow from a 100 HP compressor
• Two-stage compression for improved efficiency
• Direct-coupled drivetrain
• No belts to maintain
• Lower rotor speeds
• Reduced mechanical loading
• Advanced compressor controls
• Efficient air-cooled operation
• Low operating noise
• Designed for continuous industrial use

For facilities with consistent compressed air demand, the fixed-speed IMPETUS 75 provides a powerful and efficient solution without the added complexity of a variable-speed system.

Why Buy from Compressed Air Advisors Online?

Compressed Air Advisors specializes in helping customers properly size and select industrial compressed air equipment.

Our team can help evaluate:

• Required CFM
• Operating pressure
• Duty cycle
• Electrical requirements
• Compressor sizing
• Receiver tank sizing
• Refrigerated or desiccant dryer requirements
• Filtration
• Condensate management
• Complete compressed air system design

Call Compressed Air Advisors at 877-247-2381 for expert application assistance.

Frequently Asked Questions

How much air does the Hertz IMPETUS 75 produce?

The fixed-speed Hertz IMPETUS 75 produces 500 CFM at 125 PSI.

What horsepower is the Hertz IMPETUS 75?

The IMPETUS 75 uses a 100 HP / 75 kW electric motor.

Is this version of the IMPETUS 75 variable speed?

No. This listing is for the fixed-speed IMPETUS 75.

Is the Hertz IMPETUS 75 a two-stage compressor?

Yes. It uses a two-stage oil-injected rotary screw airend designed to improve efficiency and airflow.

Is the Hertz IMPETUS 75 belt driven?

No. It uses a direct-coupled drivetrain.

Is this compressor air cooled?

Yes. The configuration offered on this product page is air cooled.

Is a water-cooled version available?

Hertz may offer water-cooled configurations, but this product listing is for the air-cooled model only.

What size air connection does the IMPETUS 75 use?

The compressor uses a 2" NPT compressed air connection.

What is the sound level?

The IMPETUS 75 is rated at approximately 70 dB(A).

What pressure is this compressor configured for?

This product listing is configured for 125 PSI.

Hertz Impetus 22-75kw Brochure