Ingersoll Rand Oil-Flooded Air Compressors M200-M355

Product Introduction

Ingersoll Rand Oil-Flooded Air Compressors M200-M355 are high-capacity rotary screw air compressors designed for demanding industrial compressed air applications. Covering power ratings from 200 kW to 355 kW, the M200-M355 range provides airflow from 29.6 to 70.1 m³/min and pressure options from 7 to 14 bar.

The compressors use a two-stage compression configuration with a robust, high-efficiency air end and a maintenance-free gear-driven direct drive system. The motor and air end are permanently aligned, helping eliminate routine alignment adjustments and supporting long-term operating reliability.

Available with air-cooled or water-cooled configurations, these compressors can be adapted to different plant environments and cooling requirements. Integrated aftercoolers and air-water separators help provide suitable compressed air conditions for downstream systems.

The compressor package also features an intelligent control system, low-noise enclosure, easy service access, and multiple communication options, making the M200-M355 series suitable for continuous-duty industrial compressed air systems.

Key Product Features

1. Wide Power and Airflow Range

The M200-M355 series covers 200 kW, 250 kW, 315 kW, and 355 kW configurations. Depending on the selected model and pressure setting, air delivery ranges from 29.6 to 70.1 m³/min, providing options for different plant air demand requirements.

2. Two-Stage Screw Compression

The compressors use a two-stage compression design with a rugged, high-efficiency air end. Two-stage compression supports efficient air compression while the integrated cooling process helps reduce the energy required during the compression cycle.

3. Maintenance-Free Gear-Driven Direct Drive

A gear-driven direct drive system connects the motor and air end without requiring routine alignment adjustments. The permanently aligned drive arrangement helps simplify maintenance and supports reliable long-term operation.

The gear drive also eliminates the need for conventional inspection covers and provides a practical and user-safe drive arrangement. This design contributes to extended air-end service life and reduced maintenance requirements.

4. Rugged Air End with Tapered Roller Bearings

The air end uses robust duplex tapered roller bearings designed to provide linear contact for thrust loads. An integrated bearing coolant dam helps ensure coolant is available during the critical compressor start-up phase, supporting bearing durability and reliable operation.

5. Efficient Coolant Curtain Design

During the two-stage compression process, atomized oil is injected into the compressed air stream leaving the first stage. This coolant curtain significantly reduces the air temperature before it enters the second stage.

By lowering the temperature between compression stages, the system can reduce the energy required for further compression. The cooling arrangement also eliminates the need for a separate intercooler in the two-stage process.

6. Air-Cooled or Water-Cooled Configuration

The M200-M355 series is available in air-cooled and water-cooled packages, allowing users to select a configuration according to their installation environment and cooling infrastructure.

The water-cooled configuration uses a 304 stainless steel cooler, while the air-cooled configuration provides a practical solution where cooling water is not available.

7. Integrated Aftercooler and Air-Water Separator

The aftercooler is positioned at the inlet end of the compressor package. This end-to-end cooling arrangement helps deliver cooled compressed air to the downstream air system.

The optional air-cooled or water-cooled aftercooler is equipped with an air-water separator to support effective downstream compressed air management.

8. Intelligent Compressor Control

The control system provides access to important operating information and supports automated compressor operation. Available functions include load/unload control, automatic start/stop, event recording, scheduled operation, and communication interfaces.

The controller can also support compressor sequencing and system-level management, helping users coordinate multiple compressor units according to air demand.

9. Multiple Communication Options

The control system supports Modbus RTU communication through an RS485 serial port. The available control architecture also supports networked communication and remote monitoring functions, helping integrate the compressor into industrial automation and compressed air management systems.

10. Low-Noise Enclosure

The compressor package uses a low-noise enclosure to reduce operating sound levels. Typical sound levels are approximately 85 dB(A) for air-cooled units and 82 dB(A) for water-cooled units.

11. High Ambient Temperature Operation

The rotary screw compressors are designed to operate in ambient temperatures up to approximately 46°C (115°F). This high-temperature capability makes the equipment suitable for industrial environments where ambient temperatures can be elevated.

The design can also help reduce nuisance shutdown risks associated with high ambient temperatures and fouled coolers.

12. Easy Serviceability

The compressor package has an uncluttered internal layout, with components positioned for convenient access. Easily removable panels provide access to key components for inspection and service.

The simplified package design can help maintenance personnel perform routine inspection and servicing more efficiently.

Controller and Monitoring Functions

The intelligent controller provides an interface for monitoring compressor operating conditions and managing daily operation.

Main control functions include:

• Bilingual Chinese/English interface

• High-resolution display

• 15-entry event log

• Load/unload control

• Automatic start/stop

• Scheduled start and stop

• Real-time clock

• Compressor status indication

• Performance analysis and visual trending

• Automatic inspection logs

• Warning and trip notifications

• Remote monitoring and control capabilities

• Modbus RTU communication

• RS485 serial communication port

• TCP/IP communication capability where configured

• Multi-language interface options

• Multi-compressor sequencing and control

The control system can also support automatic interlocking of up to 8 compressors equipped with compatible KT controllers, subject to the selected configuration.

Digital Motor Control Option

A digitally controlled stepper motor inlet valve system is available for applications requiring precise airflow management.

The inlet control system adjusts airflow according to system demand. Users can set the preferred system pressure while the controller manages the inlet system automatically.

The design reduces the need for routine manual adjustment and avoids maintenance requirements associated with conventional pressure switches and diaphragm valve systems.

Cooling and Energy-Saving Design

The M200-M355 series incorporates several design elements intended to improve compressed air system efficiency.

The two-stage compression process uses an internal coolant curtain to cool the compressed air between stages. Lowering the air temperature before the second compression stage helps reduce the work required for further compression.

The aftercooler is positioned at the package inlet end to support efficient heat removal before compressed air enters the downstream air system.

For installation flexibility, users can choose between air-cooled and water-cooled package configurations according to site conditions.

Convenient Top Exhaust

Cooling air is discharged from the top of the compressor package. This arrangement facilitates ducting for exhaust air removal and can also support exhaust heat recovery applications where required.

Star-Delta Starter

The compressor incorporates a star-delta starter to provide a controlled and cushioned motor starting process. This helps reduce current surges during startup and can contribute to improved component service life and system reliability.

Rugged Motor Design

The electric motor is designed for demanding industrial operation and provides the durability required for continuous compressed air applications. Motor maintenance and repair procedures are designed around conventional electric motor servicing practices.

Easy Installation and Connectivity

The compressor package is fully piped and wired, helping simplify the connection of external utilities during installation. This integrated package design can reduce installation complexity and support faster commissioning.

Factory Testing

Each rotary screw compressor undergoes factory testing before delivery. Testing is intended to verify compressor operation and performance under controlled conditions, helping ensure that the completed package is ready for industrial service.

Technical Specifications

Model Specifications

200 kW Models

250 kW Models

315 kW Models

355 kW Models

Unit Dimensions and Weight

The package dimensions and weight vary according to compressor capacity and cooling configuration.

Typical package dimensions include approximately 4050 × 1930 × 2146 mm for air-cooled configurations and 3727 × 1972 × 2046 mm for water-cooled configurations, depending on the specific package configuration.

Industrial Applications

The M200-M355 range is suitable for high-demand compressed air systems requiring stable airflow and continuous-duty operation. Typical applications include:

• Manufacturing plants

• Automotive production

• Metal processing

• Machinery manufacturing

• Chemical processing

• General industrial production

• Large-scale assembly facilities

• Process air systems

• Industrial automation

• Factory compressed air stations

• Centralized compressed air systems

The combination of high power, two-stage compression, intelligent controls, flexible cooling options, and robust construction makes the range suitable for industrial facilities where compressed air reliability and operating efficiency are important.

Main Advantages at a Glance

• 200–355 kW power range

• 29.6–70.1 m³/min airflow range

• 7–14 bar pressure options

• Two-stage compression technology

• High-efficiency 380 V / 3-phase / 50 Hz motor

• IP23 motor protection

• Maintenance-free gear-driven direct drive

• Rugged air end with duplex tapered roller bearings

• Bearing coolant dam for improved startup protection

• Air-cooled or water-cooled configurations

• 304 stainless steel water-cooled cooler

• Integrated aftercooler and air-water separator

• Low-noise enclosure

• Up to 46°C ambient operating capability

• Intelligent controller

• Automatic start/stop and load/unload control

• Multi-compressor sequencing capability

• Modbus RTU and RS485 communication

• Optional VSD configurations

• Top exhaust for ducting and heat recovery

• Star-delta starter

• Easy service access

• Fully piped and wired package

• Factory tested before delivery

Reliable Compressed Air Equipment for Industrial Use

For applications requiring a high-capacity and dependable compressed air supply, Ingersoll Rand Oil-Flooded Air Compressors M200-M355 combine two-stage compression, a robust air end, direct gear drive, advanced control functions, and flexible cooling configurations in one industrial compressor package.

The range provides multiple power, pressure, airflow, and cooling options to accommodate different plant requirements. With maintenance-oriented design features, intelligent monitoring, high-temperature operating capability, and optional VSD configurations, the M200-M355 series can serve as a reliable solution for large industrial compressed air systems.

For product availability, model selection, technical specifications, and supply information, contact Biaofang Compressor Shanghai Co., Ltd. to discuss the appropriate compressor configuration for your application.

Ingersoll Rand Oil-Flooded Air Compressors M200-M355 are designed for demanding industrial environments where reliable compressed air delivery, operational efficiency, and simplified maintenance are essential.