Centac® Centrifugal
Air Compressors

A Tradition of Proven Reliability,Efficiency and Productivity
Over 100 years of Oil-Free Innovation  
We introduced our first oil-free centrifugal compressor in 1912, and over the decades we’ve
continued to develop rugged, reliable, industry-leading compressor technologies. Ingersoll Rand
has become the leader in oil-free centrifugal compressed air because our technologicaladvances are designed for the specific performance needs of our customers’ industries.
No matter what the application, Ingersoll Rand centrifugal compressors help eliminate
inefficiencies, contaminants and breakdowns that can result in costly downtime, productliability or damage to your brand reputation, while reducing total lifecycle costs.

RELIABILITY

Superior Design, Superior Life
■■

■■

■■

Fewer moving parts means less downtime
Dynamically balanced rotor assemblies
ensure extremely low vibration
Carbon ring seals minimize air leakage

Lowers cost of ownership

PRODUCTIVITY
User-Friendly Operationand Accessibility■■■■

Easy-access components make maintenancefaster and easier
Simplified compressor design provides longerintervals between maintenanceMaximizes uptime

2Centrifugal Air Compressors

EFFICIENCY

Optimized Componentsand Systems■■■■

Multi-stage compressors combine performancewith energy savings
Advanced impeller design provides maximum
pressure control over the widest operating range

Reduces energy use and operating costs
Centac® C1000

The Centrifugal Technology
Your Industry Demands

Oil-Free, Risk FreeThe first to be certified ISO 8573-1:2001 Class 0,
our oil-free centrifugal compressors offer efficient, economicaland reliable solutions for delivering compressed air. These highperforming, versatile compressors provide 100% oil-free air in
all operating conditions.
Centac® C3000

115%

Threecent stage oilrif(no c ugal com freeapac
ity lo pressorss)

110%

Greater Capacity for Greater Efficiency

105%

over competitive two-stage, oil-free

100%

30% Energy Savings

offer up to a 15% capacity advantage

Capacity

Ingersoll Rand centrifugal compressors

95%

compressors. This advantage increases to90%

as much as 30% as our capacity remains

85%

constant, while competitive capacities

80%

decrease by up to 15%.

75%

Compeoil-f titive twreo(up t e rotary -stageso 15% ca crewpacity loss)

0500

1,00

0

2,000

Hour

s of4,00

08,000Oper
ation

16,000Centrifugal Air Compressors

32,0003Centac®...Engineered for Performance
Ingersoll Rand centrifugal compressors are designed for applications
where reliability, productivity and efficiency are essential to getting
the job done right...and the compressor’s packaged design makes it
easy to install wherever needed.
Long-Life Gears
25-year rated, uniformly hardened
gears provide extreme reliability

Efficient Impeller Design
Backward leaning impellers provide constantpressure control while maximizing efficiencyand turndown range

Moisture Separator
Stainless steel moisture separator provides
superior reliability and helps prevent
corrosion, ensuring high air qualityCoolers
Precisely engineered coolers maintaina low pressure drop and the large
surface area provides maximum
cooling efficiency. The Integral cooler
design helps the compressor keep acompact footprint**Optional external configurations available

High Capacity Bearings
Hydrodynamic bearings arecompletely non-contact,offering virtually unlimited
life and maximum efficiency
with 2-3 times the lifespanof traditional bearings

RotorsHigh grade stainless steel
rotors are fully balanced
and require no coating,providing constantperformance over time

4SealsFully floating, non-contact carbon
ring seals minimize air leakage andprevent oil from migrating into thecompressed air stream; single-pieceseal construction provides
significantly better performance
than other technologies, saving
valuable compressed airCentrifugal Air Compressors

Diffuser
Optimally designed to work with
Ingersoll Rand’s backward leaning
impellers for maximum efficiency

Advanced Centrifugal Control
Optimize Your Compressed Air Systemwith Xe-Series Controls
The Ingersoll Rand Xe-Series controller uses the latest control
algorithms to help lower energy consumption. Built-in control
logic ensures system reliability by precisely managing dischargepressure and maximizing throttle range. The controller’s
intuitive, high-resolution color display makes criticalinformation quick and easy to find. And with web-enabledalerts, the Xe-Series controller helps you maintain optimal
operation automatically.

Web-Enabled Communication■■
Start/stop/load/unload and checks parameters remotely■■
Email notification of alarms and trips■■
Built-in performance reporting and visual trending with automatedinspection logs
More Connectivity Choices■■

Communicates directly with your DCS system through Modbus■■

Ethernet connection enables communication and control through tablets,
computers or mobile devices■■

Connects seamlessly with Ingersoll Rand system controls■■

Sequences up to four additional controlled compressors with noadditional hardware

Intelligent Compressor Control■■

Constant Pressure Control - Continually maintains precise dischargepressure to adjust for sudden demand variations■■

Auto Dual Control - Provides enhanced energy savings during partialload conditions■■

Energy Smart Set Point (ESS) - Adjusts settings to balance and shareloads between multiple compressors in the same system, reducing
bypassed air and saving energy

Centrifugal Air Compressors

5

We Build Solutions
We do more than build products at Ingersoll Rand. We bring ourcustomers unmatched experience in designing comprehensive
compressed air systems that cover virtually any need.
Systems and Support to Keep You Productive
Ingersoll Rand not only designs and builds extremely efficient air systems, it solves process and business problems
as well. This helps customers succeed in today’s global economy through enhanced reliability, energy efficiency
and productivity.
No matter what your industry or location, Ingersoll Rand is committed to serving you 24/7. Our worldwide networkof distributors, engineers and certified, factory-trained technicians are a phone call away—ready to support you
with innovative, cost-effective and performance-enhancing solutions.

Controls & Automation• System Automation• Compressor Controls

Air Compressors• Small Reciprocating• Rotary Screw• Centrifugal• Specialty

Motor Control CenterCondensate Management• Oil/Water Separators• Drain Valves

Installation Solutions• Receiver Tanks• Piping

Air Treatment• Filters• Dryers
Flow Control• Electronic Controls• Pneumatic Controls

6Centrifugal Air Compressors

Low Pressure 0.35-2.10 bar g (5-30 psig)
Flow

Power

Modelm3/min

cfm

kWhp

CH5
CH6

42 - 80
90 - 160

1,300 - 3,000
3,000 - 6,000

132 - 270
270 - 430

175 - 350
350 - 600

cfm
1,600-2,350
1,900-4,200
4,500 - 7,500
6,600-10,000
9,500-15,000
16,000-30,000kW260-400
200-700
350 - 1,300
670-1,600
1,000-2,400
1,500-4,600

Standard Pressure 3.1-10.3 bar g (45-150 psig)
FlowModel
C400
C700C1000
3CII
C3000
5CII

m3/min45-67
54-119127 - 212187-280
270-420450-850

Power
hp
350 - 500
300 - 900
500 - 1,750
900-2,000
1,500 - 3,500
2,000 - 6,000

High Pressure 10.3-42.0 bar g (150-610 psig)
Flow

Power

Model

m3/min

cfm

kW

hp

2CII
C750
C1050
3C
4C

90 - 130
50 - 60115
140 - 285
255 - 425

3,000 - 4,600
1,800 - 2,100
4,000
5,000 - 10,000
9,000 - 15,000

750 - 1,300
500 - 660
1,150
1,300 - 2,250
1,500 - 3,350

1,000 - 1,750
700 - 900
1,500
1,750 - 3,000
2,000 - 4,500

Weights and dimensions are estimated and will vary with scope and options.
Performance is nominal. Please contact Ingersoll Rand for specific data.

Our Broad Range of Centac® Family Compressors

Centrifugal Air Compressors

7Ingersoll Rand (NYSE:IR) is a world leader in creating and sustaining safe, comfortable and efficient environments incommercial, residential and industrial markets. Our people and our family of brands—including Club Car®, Ingersoll Rand®,Schlage®, Thermo King® and Trane®—work together to enhance the quality and comfort of air in homes and buildings,
transport and protect food and perishables, secure homes and commercial properties, and increase industrial productivity
and efficiency. We are a $14 billion global business committed to sustainable business practices within our company andfor our customers.

www.ingersollrandproducts.com
Distributed by:Ingersoll Rand, IR, the IR logo and Centac are trademarks of Ingersoll Rand, its subsidiaries and/or affiliates. All other trademarks are the property of their respective owners.
Ingersoll Rand compressors are not designed, intended or approved for breathing air applications. Ingersoll Rand does not approve specialized equipment forbreathing air applications and assumes no responsibility or liability for compressors used for breathing air service.
Nothing contained on these pages is intended to extend any warranty or representation, expressed or implied, regarding the product described herein.
Any such warranties or other terms and conditions of sale of products shall be in accordance with Ingersoll Rand’s standard terms and conditions of salefor such products, which are available upon request.
Product improvement is a continuing goal at Ingersoll Rand. Designs and specifications are subject to change without notice or obligation.

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CBL-11-019-001