The hexagon bolt, code 06.01014-1317-1.D, is a high-strength fastening element widely used throughout the MAN L21/31 engine assembly. Designed for secure clamping under heavy mechanical loads and vibration, this bolt ensures structural integrity of critical engine components. Manufactured from high-grade steel and engineered to precise specifications, it provides consistent torque retention and long-term reliability, making it indispensable for safe and stable engine operation in both marine and industrial applications.
The axial bearing disc, code 11.10121-0122.0, plays a critical role in managing axial forces acting on the crankshaft in the MAN L21/31 engine. By absorbing and distributing thrust loads generated during engine operation, it prevents excessive axial movement of the shaft and protects adjacent bearing surfaces from premature wear. Its robust construction and precise tolerances are essential for maintaining stable crankshaft positioning, reducing vibration, and ensuring reliable engine performance under variable load conditions.
The bearing disc, code 11.10121-0129.A, is a precision-machined component in the MAN L21/31 engine that supports controlled load distribution within the bearing assembly. It helps stabilize rotating components by maintaining correct spacing and contact surfaces, thereby minimizing friction and wear under high operational loads. Designed to withstand continuous mechanical stress, this bearing disc contributes to smooth engine operation, enhanced durability, and long-term reliability in demanding marine and power generation environments.
The guide bearing cap, code 11.01254-0169.A, provides axial guidance and positional stability for the crankshaft in the MAN L21/31 engine. By maintaining accurate alignment under fluctuating loads and thermal expansion, it helps control crankshaft movement and reduces mechanical wear. Its precision construction supports smooth engine operation, protects critical rotating components, and contributes significantly to the overall reliability and service life of the engine under demanding operating conditions.
The main bearing cap, code 11.01254-0168.A, is a critical load-bearing element in the MAN L21/31 engine, securing the crankshaft bearings firmly within the crankcase. Designed to withstand extreme cyclic loads and maintain precise bearing alignment, it plays a vital role in minimizing vibration and ensuring smooth crankshaft rotation. Precision-machined and manufactured from high-strength materials, this component directly influences engine durability, efficiency, and long-term operational stability.
The cylinder crankcase, code 11.01203-1642-1.T, is the core structural housing of the MAN L21/31 engine, supporting the crankshaft, main bearings, and cylinder assemblies while absorbing the immense mechanical forces generated during combustion. Engineered for high rigidity and vibration damping, this heavy-duty component ensures precise alignment of all rotating parts and provides the foundation for stable, low-noise engine operation. Its robust design is essential for long service life and reliable performance in continuous marine propulsion and industrial power generation environments.
The pipe clamp, code 06.66012-1101.0, is an important support component in the MAN L21/31 engine, used to securely fasten pipes and hoses to the engine structure. It prevents unwanted movement, vibration, and mechanical stress on fluid lines, reducing the risk of fatigue or leakage. Designed for durability and precise fit, the pipe clamp supports safe routing of oil, fuel, and cooling lines, contributing to orderly installation, easier maintenance, and dependable engine operation in harsh marine and industrial environments.
The round seal ring, code 06.56933-2418.0, is a critical sealing element in the MAN L21/31 engine, used to prevent leakage at static or dynamic joints within oil, fuel, or cooling circuits. Manufactured from durable, heat- and pressure-resistant materials, it ensures reliable sealing even under demanding operating conditions. By maintaining tight connections and preventing contamination or fluid loss, this seal ring contributes directly to engine cleanliness, efficiency, and long-term reliability.
The plug screw, code 06.08045-0144.0, is a precision sealing fastener used in the MAN L21/31 engine to close threaded ports in lubrication, cooling, or fuel systems. Designed to withstand pressure, temperature fluctuations, and vibration, this component ensures leak-free sealing of inspection openings or fluid channels. Its robust material quality and accurate thread geometry are essential for maintaining system integrity and preventing fluid loss during continuous marine or stationary engine operation.
Round steel bars, code EN43AE00350145, are high-grade raw materials used in the manufacture and refurbishment of various MAN L21/31 engine components. Produced from EN43AE alloy steel, these bars offer excellent strength, toughness, and machinability, making them suitable for precision parts such as shafts, pins, and structural elements. Their consistent mechanical properties and dimensional accuracy ensure that finished components meet strict engine specifications, supporting reliable performance in marine and industrial diesel engine applications.