Fixed Speed Oil Free 37 - 300 kW

    • Looking for a rugged and reliable oil-free air compressor? Ingersoll Rand's Sierra Oil-Free rotary screw is just the unit for you. With Ingersoll Rand’s unmatched reputation for reliability and performance to count on, oil-free customers can enjoy the peace of mind so difficult to come by given their vital process and application needs.
      Key Features

      ISO Class 0 Certified
      Ingersoll Rand was the first to deliver ISO Class 0 in both rotary-screw and centrifugal technologies. ISO 8573-1:2001 Class 0 specifies air quality standards for critical manufacturing processes within the food and beverage, pharmaceutical, textile and electronics industries. It is the most stringent class, covering oil contamination in aerosol, vapor and liquid forms. Count on Sierra Oil-Free compressors to deliver pure air, unmatched energy efficiency and peace of mind.

      Advanced Compression Module Technology
      The two-stage compression module, with oil-free rotary screw technology, is the heart of the Sierra package. It makes the Sierra the toughest machine in the business. Stainless steel is used for critical sealing components, as well as for the high pressure rotor set. Combined with the use of the "ultracoating" process for the rotors and housing bores, this module design offers double protection against wear and the effects of corrosion.

      Superior Rotor Coating Design
      Decades of oil-free rotary compressor experience have taught us how vital the rotor/housing coating is to initial and lasting compressor performance. As a result, UltraCoat was designed specifically for this oil-free compressor application, with its unmatched adhesion, durability, and temperature resistance properties the key selection criteria. But the real key for the customer is the optimum long term compressor performance, through minimized coating wear and efficiency degradation. In short, this means more compressed air for the operating cost dollar.

      Ingersoll Rand Packaging The Sierra’s packaging features were designed for optimum customer benefit. The 115ºF (46ºC)ambient rating lessens the chance for nuisance shutdowns due to summer heat or dirty coolers. The package air flow materials of construction, stainless steel for cold-side piping, aluminum for the moisture separators, and the non-corrosive compression module components add to the compressor’s operating life and insure the delivery of clean compressed air.

      Flexibility
      With Sierra, the choice is yours for an air or water-cooled package. Both have been designed for optimum performance. Also, wrapped around the many standard features are a variety of package options, available to meet special application needs. Outdoor modification, low ambient protection, and complete Nema 4 are just a few of the pre-engineered choices.

Technical Specifications
Model Freq.
(Hz)
Rated Pressure
(barg / psig)
Nominal Power
(kW / hp)
Flow
(m3min / cfm)
Length
(cm / in)
Width
(cm / in)
Height Weight
SL37 50 7 / 100 37 / 50 6 / 212 225 / 89 137 / 54 191 / 75 2387 / 5236 
SM37 50 8.5 / 125 37 / 50 5.1 / 180 225 / 89 137 / 54 191 / 75 2387 / 5236 
SL45 50 7 / 100 45 / 60 7.6 / 268 225 / 89 137 / 54 191 / 75 2497 / 5056 
SM45 50 8.5 / 125 45 / 60 6.5 / 230 225 / 89 137 / 54 191 / 75 2497 / 5056 
SL55 50 7 / 100 55 / 75 9.6 / 339 225 / 89 137 / 54 191 / 75 2577 / 5682 
SM55 50 8.5 / 125 55 / 75 8.6 / 304 225 / 89 137 / 54 191 / 75 2577 / 5682 
SH55 50 10 / 150 55 / 75 7.7 / 272 225 / 89 137 / 54 191 / 75 2577 / 5682 
SL75 50 7 / 100 75 / 100 12.5 / 441 225 / 89 137 / 54 191 / 75 2682 / 5914 
SM75 50 8.5 / 125 75 / 100 11.6 / 410 225 / 89 137 / 54 191 / 75 2682 / 5914 
SH75 50 10 / 150 75 / 100 10.7 / 378 225 / 89 137 / 54 191 / 75 2682 / 5914 
SL90 50 7 / 100 90 / 125 15.9 / 561 269 / 106 159 / 63 236 / 93  3040 / 6703 
SM90 50 8.5 / 125 90 / 125 13.6 / 480 269 / 106 159 / 63 236 / 93  3040 / 6703 
SH90 50 10 / 150 90 / 125 13 / 459 269 / 106 159 / 63 236 / 93  3040 / 6703 
SL110 50 7 / 100 110 / 150 19.4 / 685 269 / 106 159 / 63 236 / 93  3095 / 6824 
SM110 50 8.5 / 125 110 / 150 18 / 636 269 / 106 159 / 63 236 / 93  3095 / 6824 
SH110 50 10 / 150 110 / 150 15.3 / 540 269 / 106 159 / 63 236 / 93  3095 / 6824 
SL132 50 7 / 100 132 / - 22.6 / 798 269 / 106 159 / 63 236 / 93  3274 / 8211 
SM132 50 8.5 / 125 132 / - 21.4 / 756 269 / 106 159 / 63 236 / 93  3274 / 8211 
SH132 50 10 / 150 132 / - 18.8 / 664 269 / 106 159 / 63 236 / 93  3274 / 8211 
SL150 50 7 / 100 150 / 200 25.9 / 915 269 / 106 159 / 63 236 / 93  3275 / 7221 
SM150 50 8.5 / 125 150 / 200 25.9 / 915 269 / 106 159 / 63 236 / 93  3275 / 7221 
SH150 50 10 / 150 150 / 200 22.1 / 780 269 / 106 159 / 63 236 / 93  3275 / 7221 
SL200 50 7 / 100 200 / 250 35 / 1236 305 / 120 193 / 76 244 / 96  4185 / 9228
SM200 50 8.5 / 125 200 / 250 32.6 / 1151 305 / 120 193 / 76 244 / 96  4185 / 9228
SH200 50 10 / 150 200 / 250 27.4 / 968 305 / 120 193 / 76 244 / 96  4185 / 9228
SL250 50 7 / 100 250 / 300 45.2 / 1596 305 / 120 193 / 76 244 / 96  4306 / 9495
SM250 50 8.5 / 125 250 / 300 41.5 / 1466 305 / 120 193 / 76 244 / 96  4306 / 9495
SH250 50 10 / 150 250 / 300 35.5 / 1254 305 / 120 193 / 76 244 / 96  4306 / 9495
SH300 50 10 / 150 300 / 400 43.3 / 1529 305 / 120 193 / 76 244 / 96  4366 / 9627