Sleeves with code EN170H13 are precision-engineered components used in the MAN L21/31 engine to provide wear protection, alignment, or sealing between moving and stationary parts. Produced from high-quality alloy steel, these sleeves offer excellent resistance to abrasion, thermal stress, and mechanical loading. By maintaining correct clearances and protecting base components from wear, they play a vital role in extending component life, ensuring smooth operation, and reducing maintenance intervals in demanding marine and industrial environments.
The socket with code 2197020-4.0 serves as a precision connection or engagement element in the MAN L21/31 engine assembly, typically used for mounting, coupling, or servicing operations. Manufactured to tight dimensional tolerances, it ensures secure fitment and accurate force transmission between mating components. Its durable construction allows it to withstand repeated mechanical loads and service cycles, contributing to safe maintenance procedures and consistent operational performance.
The pipe with code 2101793-2.0 is an essential fluid-transfer component within the MAN L21/31 engine, used for conveying lubricating oil, cooling water, fuel, or air between critical engine systems. Designed to withstand high pressure, temperature fluctuations, and continuous vibration, this pipe ensures reliable and uninterrupted flow under demanding operating conditions. Its precise routing and robust material selection help maintain system efficiency, reduce the risk of leaks, and support long-term engine reliability in marine and power-generation applications.
The bearing bolt H 45364 is a high-strength fastening element used to secure bearing components and bearing stands in the Sulzer ASL25 engine. Designed to maintain consistent clamping force under dynamic loads, vibration, and thermal expansion, this bolt ensures stable bearing positioning and structural integrity throughout long service intervals. Precision threading and controlled material properties provide reliable preload and resistance to loosening, making H 45364 essential for dependable bearing performance and long-term engine reliability.
The bearing stand H 45338 is a structural support component designed to house and stabilize bearing assemblies within the Sulzer ASL25 engine. Engineered to absorb high radial and axial loads while maintaining precise alignment, this bearing stand ensures smooth rotation of associated shafts and reliable load distribution under continuous operation. Manufactured from high-strength material with strict dimensional tolerances, H 45338 contributes significantly to vibration reduction, bearing longevity, and the overall mechanical integrity and durability of the engine.
The hollow bolt H 43631 is a precision-engineered fastening component used in the Sulzer ASL25 engine where secure mechanical fixing must be combined with controlled fluid passage. Designed to withstand high internal pressure, vibration, and thermal cycling, this bolt ensures reliable sealing and uninterrupted flow of oil or fuel through integrated channels. Its robust construction and accurately machined bore provide long-term dimensional stability, minimize leakage risk, and support the safe and efficient operation of critical lubrication or injection circuits within the engine.
The hydraulic tie rod with code 0743814-5.3 is a precision tensioning component used in the MAN L21/31 engine to secure the cylinder head and crankcase assembly with uniform clamping force. By applying controlled hydraulic pressure during tightening, the tie rod ensures even load distribution, compensates for thermal expansion, and minimizes distortion under high combustion pressures. This system enhances sealing reliability, reduces mechanical stress, and significantly improves engine durability, particularly during long operating cycles and frequent load variations.
The engine frame, code D51101-07.0, serves as the main load-bearing structure of the MAN L21/31 engine, supporting the crankcase, cylinders, and auxiliary systems. Engineered for exceptional strength and stiffness, it distributes mechanical loads evenly across the engine and absorbs dynamic forces generated during operation. The robust design of the frame is critical for maintaining engine geometry, reducing structural fatigue, and ensuring stable performance during continuous heavy-duty service in marine and industrial environments.
The cylinder crankcase with code 11.01200-3593-1.L forms the core structural foundation of the MAN L21/31 engine, housing the crankshaft, main bearings, and lower sections of the cylinder assembly. Designed to withstand high combustion forces, torsional loads, and continuous thermal stress, the crankcase ensures precise alignment of all rotating components. Its rigid construction is essential for minimizing vibration, maintaining lubrication integrity, and guaranteeing long-term reliability in demanding marine propulsion and power generation applications.
The piston ring H 34027 is a vital sealing and wear component of the Sulzer ASL25 piston assembly, designed to maintain optimal compression and control oil consumption within the cylinder. Manufactured from high-quality, wear-resistant material, this piston ring provides effective sealing between the piston and cylinder liner under high pressure and temperature conditions. By minimizing blow-by gases, reducing friction, and ensuring efficient heat transfer from the piston to the cylinder wall, H 34027 plays a key role in combustion efficiency, emission control, and long-term durability of the engine.