Oil-Free Rotary-Screw
Air Compressors
37-300 kW (50-400 hp)

More Than Air, a History of Innovation

1906

1910

1912

2

1933

Ingersoll Rand becomespublicly traded
company on NYSE

1920

Ingersoll Rand pioneers oil-free
centrifugal compressor technology

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1930

Technologically advanced oil-freereciprocating compressor goesto market

1940

1952

1950

The world’s first oil-free rotarycompressor is introduced

For more than 100 years, Ingersoll Rand has inspired progress bydriving innovation with revolutionary technology — creating new
standards for how the world gets work done. We introduced our firstoil-free compressor in 1912, and over the decades we’ve continued todevelop rugged, reliable, industry-leading compressor technologies.
Ingersoll Rand is the technology leader in oil-free compressed air not
only because we develop class-leading products, but also because
we know our customers’ industries,
Ingersoll Rand offers
industry’s first true variableunderstand the demands placed on
speed drive, oil-freecompressor featuring HPM®
productivity and quality, and then offer
motor technology
highly engineered system solutions thatmake sense. No matter what your product,
process, or location, Ingersoll Rand has theexpertise, the oil-free technology, and theunmatched service to meet your needs.

2003

1960

1968

1970

First packaged centrifugal
compressor is introduced(current model shown)

1980

1990

1993

2000

The 37 – 300 kW packaged rotaryscrew compressor introduced
featuring Intellisys™, UltraCoat™
rotor protectant, and 46°C design

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When High Air Purity is a High Priority

Food and Beverage

Pharmaceutical

Electronics

Oil-free compressorsthat deliver no oil into the
air stream and minimise
microbial content throughhigh-temperature compression
reduce contamination risk forfood and beverage
manufacturers.

The highly regulated
pharmaceutical industry
requires 100% total quality
built into manufacturing
processes. Compressed air
quality must be validated aspart of GMP.

High air quality
is critical in thisindustry — you can’t
afford downtime or
product spoilage
with wet or oily
compressed air.

There’s a lot riding on the quality of your air.
The presence of particles, condensation, oil, andoil vapour in a compressed air system can lead to
downtime, product spoilage and recall, damage toyour brand reputation, or worse, harmed consumers
and product liability.

4

www.ingersollrandproducts.com/ofChemical

TextileUtilities

Whether manufacturing
cleaning solutions, basestock pharmaceuticals, oranything in between, thecompressed air quality must
be of the highest purity tominimise risk of production
interruption or higher costliability.

High-tech air jet looms
require super clean, dry,
100% oil-free compressed
air, which is why Ingersoll
Rand has been a criticalsupplier to this industry formany years.

Compressed air quality
is too important
to risk, so when
specifying instrument
air for utilities, mostengineers request oilfree compressors.

No matter what industry or critical application, you
can count on Ingersoll Rand to offer solutions thatmitigate risk and ensure delivery of the highest air
purity possible.

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Oil-Free, Risk-Free

How pure is your air? One of the keys to ensuring you achieve andmaintain acceptable air quality for your critical application is to know
industry air quality standards and their allowable levels of contaminants.
The lower the particular class rating, the purer the air should be.

ISO 8573-1:2010 Air Quality Classes
Solids
Quality
Class
0
1
2
3
4
5
6

Water

OIL & OIL vapour

Max Number of Particles Per m3
Pressure Dew Point
0.1 – 0.5 micron
0.5 – 1 micron
1 – 5 micronºFºC
As specified by the end-user or manufacturer, and more stringent than Class 1
100
1
0
-100
-70
100,000
1000
10
-40
-40
N/A
10,000
500
-4
-20
N/A
N/A
1,000
37.4
3
N/A
N/A
20,000
44.6
7
N/A
N/A
N/A
50
10

mg/m3
0.01
0.1
1
5
N/A
N/A

Quality
Class
0
1
2
3
4
5
6

ISO 8573-1:2010 Class 0 specifies air quality standards for criticalmanufacturing processes within the food and beverage, pharmaceutical,
textile, and electronics industries. It is the most stringent class, covering
oil contamination in aerosol, vapour, and liquid forms.
Some compressor manufacturers have marketed
their units as being essentially oil-free, but thisisn’t necessarily the case. If you need guaranteed
pure air for your critical application, then you
need Ingersoll Rand.

6

www.ingersollrandproducts.com/ofUltraCoat —Energy Savings and Longer Life™

Compressor rotors take a beating. Over time their surfaces candeteriorate, making rotors increasingly susceptible to compressed
air impurities and temperature fluctuation, which lead to reduced
efficiency, decreased air purity, and compressor failure.
Ingersoll Rand eliminates this problem with UltraCoat,an advanced rotor and housing protection process that
ensures the most durable coating, with unmatchedadhesion and temperature resistance.
Every Ingersoll Rand oil-free rotor and housing is speciallyprepared, creating a surface texture to which the UltraCoat
micro-coating bonds with the tightest, longest-lasting
grip possible.
We also use stainless-steel and aluminum piping to link thecompressor’s intercooler with the stainless-steel second stage
rotors. This way, condensation during the cooling process won’t
cause corrosion or rust, further extending the life of the UltraCoat
coating and rotors.
Ultimately, UltraCoat delivers greater reliability in performanceand air quality, rotor longevity, increased uptime, and reduced
energy costs.

Percent of Capacity

UltraCoat

Energy Savings

Competitive Coating

0

500

1,000

2,000

4,000

8,000

16,00032,000

Hours of Operationwww.ingersollrandproducts.com/of7Unleashing the Full Potentialof Variable-Speed Technology
If you have a critical oil-free application
requiring the lowest operating cost, you can’t
afford to take chances with a compressor systemthat delivers anything but the absolute highest
quality air, reliability, and efficiency. Not a
problem with an Ingersoll Rand Nirvana — theworld’s first true variable-speed drive (VSD)
oil-free compressor system.

8

www.ingersollrandproducts.com/ofPurely better
While other variable-speed drive (VSD)
compressors also deliver stable pressure,soft-starting, and improved part-load
efficiency over fixed-speed compressors,
only Nirvana enables you to reach thefull potential of variable-speed
technology. With a Nirvana system,
you get ultra-reliability and efficiency,
virtually maintenance-free operation,
unlimited starts and stops, and peace ofmind knowing your air is 100% pure.

Nirvana HPM® Technology
Nirvana technology vs.
competitive VSD compressors
Maximised starts / stops

Nirvana technology
Constant motor efficiency
and higher power factor

Competitive VSD
compressors

Long-lasting reliability
with thousands
installed worldwide
Maintenance-free,bearingless motor design
Smooth soft-starting —starting amps always below
full-load amps

Soft-starting

HPM® has virtually no
degradation in specificpower at part-load —achieving full potential ofvariable-speed control

Improved partload efficiency
Stable pressure
control

Real savings,
real satisfaction
Energy costs can be as much as 60% of
the lifecycle cost of an air compressor.
The Nirvana system helps you reach thefull potential of variable speed throughthe absolute lowest energy cost and thehighest efficiency possible.

Stable, constantpressure control

Rotary 10-year Lifecycle Cost
100%
Energy90%
Maintenance80%

Installation

70%

Purchase price

60%
50%
40%
30%
20%

Rotary comparison at
70% average volume
capacity; 4,000 hours
per year

10%0%
Fixed-speed
Oil-free Rotary

Competitive
VSD Oil-freeNirvanaOil-freewww.ingersollrandproducts.com/of

9

Achieve a Higher Planeof Performance
There’s never been a compressor system as advanced as Nirvana.
It’s synergy in motion — a combination of transcendent, inter-dependent
technologies including the revolutionary Hybrid Permanent Magnet®
(HPM®) motor, and more than a century of proven engineering expertiseand innovation.

E
SIV

Ultra-efficient andreliable, the Nirvana
HPM® motor delivers
peerless performance,
including the ability tostart and stop limitlessly
to meet demand.

®
M
P

H

LU
C
X

E

Only Ingersoll Rand combines more thana century of proven engineering andcompression technologies withthe state-of-the-art UltraCoat surface
protection coating for unmatchedperformance and durability.

10

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PRECISIONCONTROLSCOM
TEC PRE
HN SSIO
OL N
OGY

Our advanced air system
controllers enable you
to stabilise air pressure,
reduce energy costs,
extend the life of systemcomponents, and prevent
off-quality product.

50 Hz and 60 Hz Specifications
50 Hz
Model
(HPM® Style)FAD(m3/min) at
7 bar gFAD
(m3/min) at
8.6 bar g

FAD(m3/min) at
10.3 bar g

Discharge
Air BSPT
in

Nominal
kW

Width
kW

Lengthmm

Heightmm

Weightkg

IRN37K-OF

5.66

5.07

4.50

1.5

37

1120

2080

2030

1632

IRN45K-OF

6.71

6.20

5.61

1.5

45

1120

2080

2030

1632

IRN55K-OF

9.37

8.47

7.62

1.5

55

1320

2080

1950

2045

IRN75K-OF

12.32

11.33

10.42

1.5

75

1320

2080

1950

2045

IRN90K-OF

15.1

13.4

12.1

2

90

1830

2570

2440

3222

IRN110K-OF

18.5

16.7

15.4

2

110

1830

2570

2440

3222

IRN132K-OF

21.5

20.1

18.6

2

132

1830

2570

2440

3222

IRN160K-OF

25.6

24.1

22.8

2

160

1830

2570

2440

3222

FAD
(m3/min) at
8.6 bar g

FAD(m3/min) at
10.3 bar g

Discharge
ANSI Flg
in

NominalkW

Length x Width x Heightmm

Weight
kg

Model
FAD
(m3/min) at(Induction/
Inverter Style)
7 bar g
S250-VSD

45.2

40.5

35.5

4

250

3050 x 1930 x 2440 (air-cooled)

4766

S300-VSD

48.8

46.7

43.3

4

300

3050 x 1930 x 2030 (water-cooled)4902

Models S250 and S300-VSD include the inverter shipped loose for mounting in motor control room or location of customer preference.
Inverter Unit is pre-engineered for plug-and-play and is 2000 mm H x 600 mm L x 538 mm W.

60 Hz
Model
(HPM® Style)

FAD at
100 psigcfm

FAD at
125 psigcfm

FAD at
150 psig
cfm

Discharge Air
BSPT
in

Nominal
hp

Width
in

Lengthin

Heightin

Weightlbs

IRN50H-OF

200

180

159

1.5

50

44

82

80

3590

IRN60H-OF

237

220

198

1.5

60

44

82

80

3590

IRN75H-OF

331

299

269

1.5

75

52

81.8

76.7

4500

IRN100H-OF

435

400

368

1.5

100

52

81.8

76.7

4500

IRN125H-OF

563

504

444

2

125

72

101

96.1

7088

IRN150H-OF

676

616

555

2

150

72

101

96.1

7088

IRN200H-OF

881

816

751

2

200

72

101

96.1

7088

Model
(Induction/
Inverter Style)

FAD at
100 psigcfm

FAD at
125 psigcfm

FAD at
150 psig
cfm

Discharge
ANSI Flg
in

Nominalhp

350-VSD

1,600

1,501

1,330

4

350

10485

400-VSD

1,730

1,650

1,501

4

400

10785

Length x Width x HeightinWeightlbs

Models 350 and 400-VSD include the inverter shipped loose for mounting in motor control room or location of customer preference.
Inverter unit is pre-engineered for plug-and-play and is 78.7” H x 23.6” W x 21.2” D.

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11Perfect Solutions For Critical Operations

Limitlessstarts and stops

No wasted energy
The Nirvana HPM® motor requires less power at start-up,
never operates at more than full-load amps, and shuts
down immediately at minimum speed to avoid wasted
energy. Nirvana ensures constant pressure throughout
the entire operating range. At start-up, induction motors
require a power surge of up to twice full-load current inorder to overcome initial inertia. They also run unloaded
when demand is below minimum, reducing efficiency
and driving up energy costs.

12

www.ingersollrandproducts.com/ofSpecific PowerkW / m3

Nirvana is designed to start and stop limitlessly tomeet your compressed air demands while never going
above full-load amps. HPM® motor technology also has
unmatched efficiency throughout the turn-down
range, providing savings no matter what your demand
profile requires.

Induction motor / VSD
Nirvanam3/minA revolutionary motor coupledwith advanced controls andproven compressor technologies.

Proven airends

Precision-wound

Our rotary-screw airends deliver full potential throughunparalleled rotor profile accuracy and repeatability.
Stainless-steel rotors are used in the demanding second
stage for maximum corrosion resistance. UltraCoat surface
coating is also applied to the rotors and all housing
surfaces for unmatched durability and performance.

With its precision-wound design, the Nirvana HPM®
motor eliminates inefficiencies and hot spots common
to conventional, random-wound induction motors.
These hot spots can cause insulation and motor failure.

Simpler and more reliable
The Nirvana HPM® motor has fewer moving parts,and flanges directly onto the compressor drive
shaft, making the motor more reliable and 100%
maintenance-free. Its bearing-free design eliminates
the need for greasing or replacing motor bearings. The
HPM® motor is also designed to operate continuously intemperatures up to 46°C (115°F).

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13

Two-Stage, Oil-Free
Rotary-Screw Air Compressors
The reliable workhorse
Since its introduction in 1993, the Ingersoll Rand oil-free rotary-screw compressor has earned a reputation for being a highly
reliable supplier of pure air. Its rugged design sets the standard for efficiency and durability. With an Ingersoll Rand oil-freerotary-screw compressor in your operation, you benefit from knowing you can run 24-hours a day, seven days a week with
virtually no downtime.

Superior technology
Our time-proven two-stage compression module features
precision-machined rotors and gearing, advanced
UltraCoat rotor protection, anti-friction bearings, stainlesssteel air seals, and a unique labyrinth oil seal design — allensuring years of reliable, trouble-free operation.

Oil-free heritage
Over the years, Ingersoll Rand has delivered more than
100,000 sets of oil-free rotors to industries that rely on
high-purity products such as pharmaceuticals, food andbeverages, and electronics.

Stainless-steel rotors
Ingersoll Rand pioneered the use ofstainless-steel rotors in the demanding
second stage to guarantee longer
airend life, and to safeguard thequality of your compressed air.

Inlet valve superiority
Ingersoll Rand uses hydraulic valve
actuation instead of pneumatic
controls. This eliminates the needfor periodic diaphragm replacement,
preventing unnecessary downtime
and maintenance costs.

Dual-vented seals
Our stainless-steel ring seals and labyrinth oil seals provide
dual-vented, 100% guaranteed oil-free air.

14

www.ingersollrandproducts.com/of50 Hz and 60 Hz Specifications
50 Hz (37 – 300 kW)
Model SLFAD (m3/min)at 7.0 bar gModel SMFAD (m3/min)at 8.5 bar gModel SHFAD (m3/min)at 10.0 bar g

37

6

5.1

45

7.6

55

Nominal
kW

Width
mm

Lengthmm

Heightmm

Weight
kg

N/A

1372

2248

1914

2387 / 2410**

6.5

N/A

1372

2248

1914

2497 / 2520**

9.6

8.6

7.7*

1372

2248

1914

2577 / 2600**

75

12.5

11.6

10.7*

1372

2248

1914

2682 / 2705**

90

15.9

13.6

13

1588

2692

2362 / 1841 **

3040 / 3195**

110

19.4

18

15.3

1588

2692

2362 / 1841 **3095 / 3250**

132

22.8

21.4

18.8

1588

2692

2362 / 1841 **

3274 / 3429**

150

25.9

24.6

22.1

1588

2692

2362 / 1841 **3275 / 3430**

200

35

32.6

27.4

1930

3048

2438 / 2032 **

4186

250

45.2

41.5

35.5

1930

3048

2438 / 2032 **

4306

300

43.6

43.5

43.3

1930

3048

2438 / 2032 **4366

Nominalhp

Model LFAD
at 100 psig
cfm

Model HFAD
at 125 psig
cfm

Model HH
FAD
at 150 psig
cfm

Width
in

Lengthin

Heightin

Weight
lbs

50

214

179

N/A

54

88.5

75.4

5111

60

266

229

N/A

54

88.5

75.4

5364

75

333

288

268*

54

88.5

75.4

5364

100

419

407

378*

54

88.5

75.4

5500

125

585

523

477

62.5

106

93.3 / 72.5**6437 / 6709**

150

690

690

565

62.5

106

93.3 / 72.5**6452 / 6724**

200

911

854

759

62.5

106

93.3 / 72.5**

7099 / 7385**

250

1,182

1,070

905

76

120

96 / 80**

8820

300

1,398

1,264

1,112

76

120

96 / 80**

9090

350

1,600

1,501

1,330

76

120

96 / 80**

9610

400

1,539

1,535

1,527

76

120

96 / 80**9610

60 Hz (50 – 400 hp)

FAD (Free Air Delivery) cfm and m3/min are full-package performance ratings in accordance withCAGI / Pneurop acceptance test standard PN2CPTC2 or ISO 1217:1996.
*Available in water-cooled configuration only.
**Specification given with air-cooled value first, then water-cooled.

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15

Ingersoll Rand (NYSE:IR) advances the quality of life by creating comfortable, sustainable and efficient environments. Our
people and our family of brands—including Club Car®, Ingersoll Rand®, Thermo King® and Trane®—work together to enhance
the quality and comfort of air in homes and buildings; transport and protect food and perishables; and increase industrial
productivity and efficiency. We are a $13 billion global business committed to a world of sustainable progress and enduring results.

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Distributed by:™

Ingersoll Rand, IR, the IR logo, HPM, UltraCoat and Intellisys are trademarks of Ingersoll Rand, its subsidiaries and/or affiliates. All other trademarks are theproperty of their respective owners.
Ingersoll Rand compressors are not designed, intended or approved for breathing air applications. Ingersoll Rand does not approve specialized equipment
for breathing 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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© 2015 Ingersoll-Rand Company Limited ENG52741