Delivering Compressed Air Solutions For More Than 125 Years
For more than a century, Ingersoll-Rand air compressors have helped build dams,bridges and tunnels; produce cars,appliances and electrical equipment; and package foods and pharmaceuticals.As more and more companies chose
Ingersoll-Rand air compressors, we answered the call for new technologies and updated designs, ensuring that our customers get the maximum benefits from their compressed air.

The UltraCoat Advantage
UltraCoat Protection and Performance      
When compared with other coatings,UltraCoat is a clear winner.Our customers get near-100% capacity and lower energy costs over a longer airend life.
The first step to full UltraCoat protection is the superior surface preparation of our rotors and housings. As the images show, our component surface treatments allow for the tightest possible grip for the coating. In the next step, UltraCoat is applied using robotics for the thinnest, most even coat available. Then the rotors and housings are heat-cured to solidify the bond between the
coating and the rotor or housing surface.
The SIERRA Package
NON-CORROSIVE MATERLALS

Critical components are built from noncorrosive materials to preserve the performance of the airend and protect the quality of your compressed air.
MAXIMUM COMPRESSOR PERFORMANCE
115FAMBIENT/46
46° C AMBIENT
SIERRA compressors are designed to operate in high-ambient conditions, making them suitable for locations all over the world.
ROTARY SCREW ALREND                    RUGGED MOTOR DESIGN
ROTARY SCREW AIREND                RUGGED MOTOR DESIGN
When you buy any SIERRA compressor, you get only superior, state-of-the-art rotary screw technology. No substitutions.Every SIERRA compressor incorporates a durable high efficiency motor—either an IEC motor for 50 Hz applications or a certified NEMA motor for 60 Hz applications. All SIERRA compressors operate well below the maximum service factor of our motors,ensuring reliability.

EASY SERVICEABILITY                                        QUIET OPERATION 
The SIERRA package is remarkably uncluttered, making servicing easy. All
components requiring routine maintenance are readily accessible behind easily removable panels.The combination of an inlet sound box and a low sound enclosure design keeps sound levels at a minimum. What’s more, SIERRA compressors have efficient pulsation dampeners on each stage of compression,reducing noise even further while ensuring a pulsation-free discharge for smooth air flow.Water-cooled: 76 dB(a) Max. Air-cooled:
79 dB(a) Max.

PATENTED MOLSTURE SEPARATOR DESIGN        
Designed to eliminate a problem before it starts, our patented moisture separator, with its unique vortex design, removes condensate before it enters the second stage of compression.

FACTORY-TESED
Every SIERRA compressor undergoes state-of-the-art computerized testing to
ensure that you get the best possible performance under varying conditions.    

Focused on Our Customers
Ingersoll-Rand strives to deliver value to our customers in everything we do. We stay focused on what you need, remaining true to our goal: to help you achieve the best results possible with your compressed air
Supply. By maintaining solid relationships with our customers, our dedicated sales staff and distributor network relay changing requirements to our engineering team. With this information, our engineers make design improvements that ensure that our customers get the quality compressed air
they’ve asked for. If you want a single source supplier, you can count on Ingersoll-Rand. Whether you need compressed air systems, parts and service, or technical support, we will be there to help your system run at peak efficiency now and in the future.

SIERRA：Superior Technology
The heart of the SIERRA oil-free rotary screw air compressor is our superior twostage compression module. Our rotors are precision-machined in a twenty-step manufacturing process that ensures unmatched rotor profile accuracy and repeatability. By using the highest quality bearings and precision gearing to maintain exact alignment of the rotors, you are assured of years of reliable, ef ficient service. Generously sized, anti-friction bearings easily handle all expected loads to keep the airend running smoothly. In the vital sealing arrangement, the SIERRA uses durable stainless steel for the air seals and a timeproven labyrinth design for the oil seals. This combination protects the rotors from lubrication impurities while keeping the loss of air through leakage to an absolute minimum, ensuring the continuous flow of clean, oil-free compressed air.
The precision gearing incorporated in the compression module drive design optimizes both speed and rotor timing, providing trouble-free performance over a long life. And the improved lip seal on the bull gear drive input shaft eliminates any opportunity for oil leakage into the SIERRApackage.

Solving The Need For Better Oil-Free Performance
The challenge: to give our customers an oil-free rotary compressor that operates atpeak performance throughout its lifetime.After a great deal of research, Ingersoll-Rand found that inferior rotor coatings wear away over time, leaving the rotors unprotected and susceptible to impurities in the air and to the effects of temperature variation. Eventually, this leads to reduced performance or even compressor failure.

After two years of modification and testing, Ingersoll-Rand chose the coating that consistently outperformed all others in adhesion and durability tests: UltraCoat. Now, we use UltraCoat to protect every SIERRA airend.