Ingersoll Rand RS355n Oil-Filled Screw Compressor

Description Ingersoll Rand RS355n Oil-Filled Screw Compressor

Variable-speed oil-lubricated screw compressor with a single-stage screw block

The Ingersoll Rand RS355n is a new-generation, heavy-duty industrial screw compressor from the RS series, designed for operation in extremely harsh conditions. It delivers a low total cost of ownership (TCO) thanks to advanced energy efficiency, exceptional component reliability, and best-in-class performance.

About the Series

Ingersoll Rand RS Series screw air compressors, with capacities ranging from 315 to 355 kW, represent the flagship solution for large industrial facilities requiring uncompromising power and stable energy supply. This line of heavy-duty units is designed specifically for energy-intensive industries—from metallurgical and mining and processing plants to large chemical plants and cement facilities—where compressed air is a critical resource.

As a recognized global leader in innovative engineering, Ingersoll Rand has embodied the concept of maximum total efficiency in the RS315–RS355 models. These compressors combine the intelligent PAC™ protection system, premium component reliability, and advanced digital control technologies. By choosing the RS series in this power range, businesses gain not just a source of air, but a strategic asset capable of operating 24/7 under the most demanding conditions, minimizing operating costs and ensuring the highest uptime in the market.

Key Benefits and Technologies of the Series:

•  Innovative screw compressor (Airend): Delivers 8% higher efficiency and 13% greater airflow compared to previous models.
• Motor protection class: Premium TEFC (IP55).
•  V-Shield™ technology: Uses stainless steel connections and premium seals to ensure zero leakage.
• PAC™ Protection: An intelligent system that continuously monitors operating parameters and automatically adjusts compressor operation to prevent unplanned shutdowns.
•  Xe-Series Controller: High-resolution color display with remote control and monitoring capabilities via any web browser.
•  Free-Floating Cooling System: Reduces thermal load on heat exchangers, extending their service life.
• Operational Stability: Capable of stable operation at temperatures up to +46°C as standard (optionally up to +55°C).
•  Pneumatic Audit: Professional model selection (RS, ie, or VSD) based on your facility’s actual consumption profile.
• Warranty and service: CARE programs providing lifetime support and extended warranty.
• Energy efficiency: Return on investment through reduced electricity costs.

Standard Features:

• Premium TEFC motor with space heater and RTD

• Star‑delta starter

• Noise attenuation enclosure with hinged service doors

• Free‑floating cooling system optimized for efficiency

• PAC™ Protection adjusts operating parameters

• Control panel with dust/liquid protection

• Long‑life consumables, 16,000‑hour Ultra EL lubricant

• Condensate separator to reduce moisture downstream

Optional Features:

• Outdoor modification package

• Low ambient protection down to –10°C

• High ambient rating up to +55°C

• Premium high‑dust filtration

• Sealed containment base

• Ultra FG lubricant

• Automatic Power Outage Restart Option (PORO)

• Electronic soft starter

• Flow control modulation

• Phase monitor protection

• Medium and high voltage options

Series comparison: RS, RS-ie, RS-n, RS-ne

*VSD (Variable Speed Drive) — frequency control to compensate for uneven consumption patterns and maximize energy savings.

Applications and Operating Conditions

Ingersoll Rand RS Series screw compressors are designed to operate reliably in a wide range of challenging and extreme conditions thanks to their flexible design features and special options.

• Extreme temperatures: The equipment is capable of operating both indoors and outdoors at temperatures ranging from -10 °C to 55 °C. 
• High dust levels: For harsh industrial environments, a premium high-dust filtration option is available, and the control panels feature reinforced protection against dust and liquids.
• Outdoor installation and precipitation: Compressors can be modified for outdoor operation, which includes special rain protection.
• Aggressive cooling media: For water-cooled models, system options are available capable of operating with hard water or even seawater.
• Demanding industrial applications: Thanks to their reliability, these systems are used in demanding sectors such as the mining industry (both surface and underground), metalworking, the glass industry, cement production, and the utilities sector.

To ensure stable operation in such conditions, the systems are equipped with Adaptive Monitoring Technology (PAC™), which continuously monitors operating parameters and adjusts to them to prevent unplanned downtime.