TRA-TM Series

TRATM is the most compact 3-stage compressor model of IHI DALGAKIRAN. The TRATM series offers energy and space saving, low maintenance and easy handling advantages compared to rotary screw compressors. Since 2009, when it was introduced to the market, the TRATM series continues to satisfy customers who have previously used rotary screw compressors by reducing the cost the life cycle.
TRATM series consists of vital components, such as air cooler, main motor, control panel, gear box, suction filter and all these will be fitted into one compact package. This simple design allows for smaller installation space and shorter installation time. The structure of the robust gear box provides the customers with high reliability by utilizing tilting pad journal bearing, customized core parts(Impeller, diffuser). These parts are designed with anti-wearing technology, built for long life and stable operation.


Motor Size 210kW-500kW 280-666hp
Flow Rate 2,470-4,940m3/h 1,454-2,908cfm
Discharge Pressure 0.2-1.1MPaG 30—160psig
Dimensions Length 3,700mm
Width 2,000mm
Height 2,000-2,200mm
Weight 7,100-8,500kg

General Information

By supplying the most suitable centrifugal compressors , IHI can contribute to energy saving for your plant, as well as reducing life cycle cost dramatically.

IHI has more than 1,500 aero parts design for the most optimized centrifugal compressors to meet customers’ requirements. The aerodynamic design has been analyzed by Computational Fluid Dynamics (CFD) method, same as we use when designing jet engines and turbo chargers.

  • Simple and reliable design. IHI centrifugal compressor is designed to be simple and reliable for easy maintenance, stable operation and maximizing uptime.
  • Compressor Frame. The gear case and air coolers are casted together in a single, robust and compact structure. The compressor unit and air paths are surrounded by a thick, seamless wall that is also highly effective in reducing noise levels.
  • Suction Filter. The suction filter uses a cartridge type element, which allows for easy replacement.
  • Air coolers. To ensure the stable operation of the compressor, the coolers need to be cleaned periodically. The air coolers mounted on IHI centrifugal compressors are designed to allow water to flow along the pipes, and its simple structure makes cleaning very easy.
  • Inlet Guide Vane. With the inlet guide vane(inlet throttle valve), air supply can be controlled in accordance with consumption. Further, the inlet guide vane enhances efficiency by providing preswirl flow to the air taken into the compressor in the same rotative direction as the impeller.
  • Tilting pad journal bearing. Tilting pad journal bearing, which realize high-speed and stable operation, are adopted. Pad tilt will change in accordance with bearing load changes, which provides excellent compliance with load change in the compressor.
  • Impeller. The three dimensional impeller, designed by making the fullest use of IHI’s extensive experience and cutting edge CFD technology, enables world top class efficiency and a wide operating range. The use of both titanium and high strength stainless steel means there is no need to worry about wear or corrosion.
  • Diffuser. The velocity energy imparted to air by the rotation of the impeller is efficiently converted into pressure energy by the diffuser. Because the impeller and diffuser are analyzed together using cutting edge CFD technology, air turbulence is kept to an absolute minimum, and operating noise is extremely low.
  • Labyrinth seal. For the air seal and oil seal, the labyrinth type, which has no contact with the shaft, is adopted, so there is no wear resulting from operation and no periodic replacement is required.

ITRATM series is more compact and simpler in design when compare to rotary screw compressor. It also offers 3 stage compression in middle pressure range, which rotary screw compressor does not. An increased number of compression stage can improve compressor’s cooling performance and compression efficiency. When compared to 2 stage rotary screw compressors, TRATM series offer the significant energy saving by utilizing the best suited aerodynamic design.

IHI DALGAKIRAN centrifugal compressors provide 100% oil free air for the customers. These are classified by TÜV, the independent third-party testing center in Germany, as oil-free according to the latest ISO8573-1 class 0 that is the highest degree in terms of compressed air purity, and they minimize the risk of oil contamination in your products or in the products of your customers.
IHI DALGAKIRAN continues to be a dominant force in the Japanese centrifugal compressor market thanks to its superior technological advantage. IHI DALGAKIRAN’s history The quality of centrifugal compressors in DALGAKIRAN has been shaped by the strict requirements of the leading companies in automotive, semiconductor, iron and steel, refinery, petrochemical, air separation and food industries.