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Ingersoll-Rand C100MX3-2SH

Used Air Compressor Ingersoll-Rand CENTAC C100MX3-2SH 8.23 bar


General Description of the Used Air Compressor Ingersoll-Rand CENTAC 


The Used Air Compressor Ingersoll-Rand CENTAC C100MX3-2SH 8.23 bar efficiently meets industrial compressed air supply needs. Consequently, its advanced structure ensures reliable and continuous operation. Furthermore, a three-phase electric motor directly couples through a gear-type spacerless coupling, optimizing performance by minimizing mechanical losses and improving power transmission.


This compressor belongs to the Low Pressure category, operating at a maximum pressure of 8.23 bar absolute, which is equivalent to approximately 7.23 bar relative to atmospheric pressure. As a result, its design makes it ideal for industrial applications that do not require pressures exceeding 10-15 bar, ensuring stable and efficient operation.


The machine utilizes a three-stage compression configuration, which progressively increases air pressure. Additionally, each stage features combined aluminum and cast iron diffusers, while a cooling system with intercoolers at each stage and a final aftercooler enhances operational efficiency. Moreover, onboard instrumentation includes temperature and pressure transducers, ensuring continuous performance monitoring.


Technical Data and Performance


The Used Air Compressor Ingersoll-Rand CENTAC C100MX3-2SH 8.23 bar operates with an absolute intake pressure of 99.3 kPa, whereas its discharge pressure reaches 8.23 bar absolute. It delivers an air supply capacity of 2190 m³/h, making it highly suitable for large-scale industrial applications.


Its three-phase asynchronous squirrel cage motor runs within a voltage range of 380 to 415V, at 50 Hz, providing a nominal power of 680 kW and a rotational speed of 2970 RPM. Similarly, the motor features an IP23 protection rating and Class F insulation, allowing a maximum operating temperature of 100°C. Given these specifications, a star/delta starting configuration limits the number of starts to three when cold and two when hot per hour, thereby preventing excessive thermal and mechanical stress.

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Structure and Components


A vertically split cast iron casing enhances the machine’s robustness, facilitating easy maintenance and quick access to internal components. In particular, the Bull-Gear, constructed from AGMA 12-grade helical steel, operates with oil-lubricated hydrodynamic sleeve bearings, ensuring reliability and longevity. Furthermore, the 17-4PH stainless steel impellers feature a semi-open design with backward-leaning blades to maximize aerodynamic efficiency. In the same way, aluminum and cast iron diffusers aid in pressure recovery and maintain operational stability.


The lubrication system integrates an oil reservoir coated with epoxy for corrosion resistance. Additionally, a 0.75 kW pre/post lubrication pump, operating at 380/415V, maintains continuous oil circulation, protecting moving components.