Oil Free Compressors

Today, Ingersoll-Rand is the only manufacturer that can supply you with oil-free compressed air on all three technologies: rotary screw, reciprocating and centrifugal. And since each technology has its benefits, Motherwell Bridge Air Systems can help you select the one that works best for your application.

To fit the needs of your compressed air system, we offer you the choice of a water-cooled or air-cooled SIERRA design.

Maximum Compressor Performance

With UltraCoat rotor protection and the extensive use of corrosion-resistant materials, the two-stage airend gives you near-100% capacity for its life. You also get ultimate energy efficiency that will start saving you money on the first day.

Rotary Screw Airend

When you buy any SIERRA compressor, you get only superior, state-of-the-art rotary screw technology. No substitutions.

Non-Corrosive Materials

Critical components are built from non-corrosive materials to preserve the performance of the airend and protect the quality of your compressed air.

46°C Ambient

SIERRA compressors are designed to operate in high-ambient conditions, making them suitable for locations all over the world.

Easy Serviceability

The SIERRA package is remarkably uncluttered, making servicing easy. All components requiring routine maintenance are readily accessible behind easily removable panels.

Patented Moisture 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.

Rugged Motor Design

Every SIERRA compressor incorporates a durable high efficiency motor – either an IEC motor for 50 Hz applications. All SIERRA compressors operate well below the maximum service factor of our motors, ensuring reliability.

Star-Delta Starter

This advanced starter gives the compressor a controlled, cushioned start, eliminating current surges and extending component life for increased system reliability

Quiet Operation

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.

Factory Tested