Cylindrical pins with code EN1P1228 are essential alignment and locating elements used throughout the MAN L21/31 engine assembly. These precision-machined pins ensure accurate positioning of components such as bearing caps, housings, covers, and structural parts during assembly and maintenance. Made from hardened steel, they provide high shear strength and excellent wear resistance, enabling repeatable disassembly and reassembly without loss of alignment. Their role is critical for maintaining geometric accuracy, minimizing stress concentrations, and supporting the long-term mechanical stability of the engine.
The guide bearing cap, code 11.01254-0169-1.E, is a variant designed to meet specific installation or revision requirements within the MAN L21/31 engine. Functionally identical in purpose to other guide bearing caps, it plays a crucial role in fixing and stabilizing bearing or guide components, ensuring precise positioning and consistent clearances. Its robust construction allows it to withstand cyclic loads, thermal expansion, and engine vibrations, helping preserve crankshaft alignment and overall mechanical integrity during long-term operation.
The guide bearing cap with code 11.01254-0169.A is a precision structural component in the MAN L21/31 engine, designed to secure and support guide or bearing elements within the crankcase assembly. Its primary function is to maintain accurate alignment of rotating or guiding components, ensuring stable operation under high mechanical loads. Manufactured to tight tolerances and from high-strength materials, this bearing cap contributes to reduced vibration, controlled load distribution, and long-term reliability of the engine’s bearing system, particularly in continuous-duty marine and power generation applications.
The shaft seal N 73126 is a precision-engineered sealing component designed to provide effective sealing around rotating shafts in the Sulzer ASL25 engine. Built to withstand continuous shaft rotation, pressure differentials, and thermal influences, this seal prevents leakage while minimizing friction and wear. Its durable construction and optimized sealing geometry ensure reliable long-term performance, protect bearings and housings from contamination, and play a vital role in maintaining the integrity and efficiency of the engine’s lubrication and fluid-handling systems.
The seal N 71091 is a critical sealing element used in the Sulzer ASL25 engine to prevent leakage of fluids and protect internal systems from contamination. Designed to maintain reliable sealing performance under fluctuating pressures, temperature variations, and continuous vibration, this seal ensures stable operation throughout extended service intervals. Its application-optimized material and precise manufacturing support long service life, safeguard adjacent components, and contribute directly to the cleanliness, efficiency, and safety of the engine’s fluid systems.
The impact bolt N 55053 is a high-strength fastening component designed for use in the Sulzer ASL25 engine where resistance to shock loads and dynamic mechanical forces is essential. Engineered to absorb repeated impact stresses and vibration without loss of clamping integrity, this bolt ensures secure positioning of critical components under demanding operating conditions. Manufactured from tough, fatigue-resistant material with precise dimensional control, the N 55053 impact bolt contributes to structural stability, operational safety, and long-term reliability of heavy-duty engine assemblies.