ST400 Series Turbine Air Starters
Ingersoll Rand ST400 Series Turbine Air Starters
ProTech is an official partner of Ingersoll Rand, providing professional engine starting solutions for diesel and gas engines across industrial, marine, power generation, and heavy-duty vehicle applications.
ST400 Series turbine air starters offer compact, lightweight, and high-performance starting solutions for applications where reliable starting in demanding environments and precise configuration customization are essential.
The ST400 Series features an advanced turbine design where compressed air flows through a high-speed rotating turbine wheel. This delivers maximum starting power with lower weight and a more compact footprint compared to traditional vane air starters. Turbine technology provides rapid acceleration, smooth torque delivery, and reduced mechanical wear, completely eliminating the need for air line lubrication (Lube-Free operation).
The ST400 Series is an ideal choice for demanding applications where electric starting is impractical or unsafe, and a high power-to-weight ratio is required. It is specifically engineered for mid-range diesel and gas engines in mining, marine auxiliary power, stationary power generation, and industrial pump or compressor packages.
Configurable Starter Platform: The ST400 Series is not merely a single standard unit, but a versatile platform tailored to your engine’s exact requirements. It can be fully configured in terms of ARC level (Air Restriction Control), operating pressure, gear ratio, drive pinion, flange type (SAE 1 & SAE 3), rotation direction, and mounting orientation.
Understanding ARC (%) in the ST400 Series
ARC (Air Restriction Control) regulates the volume of airflow utilized by the turbine motor to optimize performance based on available system pressure:
- ST400 (44% ARC) – Designed for high-pressure systems (up to 10.3 bar). Delivers maximum peak power and breakaway torque.
- ST455 (55% ARC) – A versatile and balanced option for medium-pressure systems (up to 8.3 bar).
- ST499 (99% ARC) – Optimized for low-pressure systems (down to 2.1 bar) with maximum airflow to ensure reliable starts at reduced pressure.
ST400 Series Technical Specifications and Performance Data
| Model | Pressure (bar) | Breakaway Torque (Nm) | Speed @ Max Power (RPM) | Max Power (kW) | Flow @ Max Power (L/s) |
|---|---|---|---|---|---|
| ST400 (44% ARC) |
6.2 | 122 | 1500 | 10 | 203 |
| 8.3 | 163 | 1650 | 14 | 284 | |
| 10.3 | 203 | 1650 | 19 | 354 | |
| ST455 (55% ARC) |
4.1 | 109 | 1400 | 7 | 236 |
| 6.2 | 183 | 1450 | 13 | 307 | |
| 8.3 | 251 | 1500 | 17 | 368 | |
| ST499 (99% ARC) |
2.1 | 68 | 1550 | 5 | 251 |
| 4.1 | 156 | 1600 | 10 | 260 | |
| 6.2 | 251 | 1650 | 19 | 361 |
* Performance values are indicative and based on working pressure at the starter inlet. Final output depends on system configuration and piping dimensions.
Why Choose ProTech for the ST400 Series?
ProTech is more than just a supplier. With over 20 years of experience providing sales and technical support to leading OEM engine manufacturers, we deliver precisely configured starting solutions and maximum operational reliability for your business.
- The Only Certified Service Center in the Nordic and Baltic Regions: We operate as the region’s sole authorized service center specializing in Ingersoll Rand air starting systems.
- In-depth OEM Expertise: Specialized engineering knowledge for correct selection of ARC levels, pinion codes, SAE flanges, and system integration.
- Full Lifecycle Support: From technical sizing and selection to certified repair, genuine spare parts, and warranty support.
Contact Us for Quotations, Technical Advice, or Spare Parts
Need assistance configuring the correct Ingersoll Rand ST400 model for your engine, scheduling service, or ordering genuine spare parts? Our technical specialists are here to help.
We respond to all technical inquiries within one business day.
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