Description
| Product model | MBMT120 |
| Manufacturer | General Electric (GE) Aviation / GE Power |
| Product category | Gas Turbine Hot Gas Path Component / Combustion Liner |
| Part type | Combustion Chamber Liner (Can-Type or Annular Variant) |
| Compatible models | GE LM2500, LM2500+, LM2500+G4 (aeroderivative gas turbines) |
| Material | High-Temperature Nickel-Based Superalloy (e.g., INCONEL® 617, 625, or 718) |
| Cooling method | Film cooling via drilled holes and internal air passages |
| Application | Power generation, marine propulsion, offshore platforms, naval vessels |
| Operating temperature | Up to 1,100°C (2,012°F) in hot gas path |
| Certifications | GE PREDiCT™, ISO 9001, AS9100, NADCAP (for welding & NDT) |
| Standard | OEM GE engineering specifications, military and marine compliance (e.g., MIL-STD) |
Product Introduction
The GE MBMT120 is a critical combustion chamber liner designed for the GE LM2500 series of aeroderivative gas turbines, including the LM2500, LM2500+, and LM2500+G4 models. As a core component of the turbine’s combustion system, the MBMT120 plays a vital role in ensuring stable, efficient, and clean combustion of fuel under extreme thermal and mechanical conditions. Manufactured by General Electric (GE), this part is engineered to meet the highest standards of reliability and performance in demanding applications such as marine propulsion, offshore power generation, naval operations, and industrial cogeneration.
The MBMT120 is typically part of a can-annular or annular combustion system, where it forms the inner wall of the combustion chamber, protecting the outer casing from the intense heat of the combustion process. Constructed from high-performance nickel-based superalloys such as INCONEL® 617 or 625, the liner is designed to withstand continuous exposure to temperatures exceeding 1,100°C (2,012°F) while resisting thermal fatigue, oxidation, and hot corrosion. Its advanced film cooling design—featuring precisely drilled holes and internal cooling channels—ensures a protective layer of cooler air flows over the liner surface, significantly extending service life.
As an OEM (Original Equipment Manufacturer) component, the GE MBMT120 is built to exacting specifications and undergoes rigorous testing, including non-destructive examination (NDE), dimensional validation, and material traceability. It is a key element in GE’s PREDiCT™ maintenance program, where performance data is used to optimize inspection intervals and prevent unplanned outages. The MBMT120 is essential for maintaining turbine efficiency, minimizing emissions (especially NOx), and ensuring long-term operational integrity.
MBMT120 GE
Core Advantages and Technical Highlights
Advanced high-temperature superalloy construction for extreme durability
The MBMT120 is fabricated from nickel-based superalloys known for their exceptional strength and resistance to creep, oxidation, and thermal cycling at elevated temperatures. These materials are critical for maintaining structural integrity in the harsh environment of a gas turbine combustor. The use of alloys like INCONEL® 617 ensures the liner can endure repeated start-stop cycles and sustained high-load operation without cracking or warping.
Precision film cooling design for enhanced thermal protection
The liner incorporates a sophisticated film cooling system with hundreds of laser-drilled holes that allow compressed air from the compressor to flow over the inner surface. This creates a protective thermal barrier that reduces metal temperature by several hundred degrees, dramatically improving component life and reliability. The cooling pattern is optimized through computational fluid dynamics (CFD) to ensure uniform coverage and minimal impact on combustion efficiency.
OEM design ensures perfect fit, performance, and emissions compliance
As a genuine GE part, the MBMT120 is manufactured to exact factory specifications, ensuring seamless integration with other combustion system components such as fuel nozzles, igniters, and transition pieces. This guarantees consistent combustion dynamics, optimal flame stability, and compliance with environmental regulations regarding NOx and CO emissions. Using OEM parts also preserves warranty coverage and eligibility for GE’s digital performance monitoring services.
Designed for LM2500 series reliability in mission-critical applications
The LM2500 series powers some of the world’s most critical vessels and power plants, including U.S. Navy destroyers and offshore LNG carriers. The MBMT120 is engineered to meet the stringent reliability and safety requirements of these applications. Its robust design minimizes the risk of combustion instability, hot spots, or flameout, which could lead to catastrophic turbine damage.
Typical Application Scenarios
The GE MBMT120 is widely used in naval and military vessels, where the LM2500 powers destroyers, frigates, and fast attack craft, providing high power-to-weight ratio and rapid response. In commercial marine applications, it drives LNG carriers, cruise ships, and offshore support vessels, offering reliable propulsion and onboard power generation.
In the oil and gas sector, the MBMT120 supports offshore platforms and floating production units (FPSOs), where gas turbines provide continuous power in remote, corrosive environments. Onshore, it is deployed in simple and combined cycle power plants, cogeneration facilities, and district energy systems, contributing to grid stability and energy efficiency.
The MBMT120 is also used in emergency and peaking power plants, where rapid start-up and load-following capability are essential. Its role in aeroderivative turbines makes it ideal for mobile and modular power solutions in remote or disaster-stricken areas.
Related Model Recommendations
MBMT121 – Transition piece or duct that connects the combustor to the turbine nozzle, often replaced with the liner.
Fuel Nozzle Assembly (P/N varies) – Critical for fuel atomization and combustion efficiency, should be inspected with liner replacement.
Igniter Plug – Ensures reliable light-off during startup, especially in marine and cold environments.
LM2500 Hot Gas Path (HGP) Kit – Includes combustion liners, transition pieces, turbine nozzles, and blades for major overhauls.
GE PREDiCT™ Services – Digital monitoring and predictive maintenance for optimizing MBMT120 service life.
Compressor Inlet Filters – Protect the turbine from particulate ingestion, reducing erosion on downstream components like the MBMT120.
Turbine Inlet Air Cooling (TIAC) Systems – Improve power output and efficiency, indirectly reducing thermal stress on hot section parts.
MBMT120 GE
Installation, commissioning and maintenance instructions
Installation preparation: Before installing the GE MBMT120, ensure the turbine is cooled, depressurized, and locked out. Inspect the combustion casing, fuel nozzles, and igniters for damage or carbon buildup. Verify the new liner for shipping damage and confirm part number match. Use clean handling procedures to avoid contamination of cooling holes. Follow GE’s maintenance manual for torque sequences and alignment.
Commissioning steps: After installation, perform a borescope inspection to verify proper seating and clearance. Conduct a leak check on fuel and air connections. Perform a dry motor (crank) test to ensure no rubbing. Initiate a light-off test and monitor flame pattern, exhaust temperature spread, and vibration. Use emissions analyzers to verify NOx and CO levels are within limits.
Maintenance suggestions: Inspect the MBMT120 during routine hot gas path inspections (typically every 8,000–24,000 operating hours). Look for signs of cracking, warping, burner hole erosion, or coating spallation. Use borescope inspections to assess internal condition. Replace in pairs or sets to maintain combustion balance. Maintain proper fuel filtration and compressor washing to reduce fouling and hot corrosion.
