The shaft seal K 73028 is a precision sealing element designed for bearing housing K 73011 in the Sulzer ZV40/48 engine, providing effective sealing around rotating shaft components. Its primary function is to prevent leakage of lubricants while simultaneously protecting the bearing assembly from contamination by dirt, moisture, and external particles. Engineered for operation under continuous shaft rotation, vibration, thermal variation, and lubrication exposure, the seal maintains reliable elasticity and sealing performance over long operating periods. Manufactured from high-quality elastomeric and wear-resistant materials, it offers excellent resistance to friction, pressure, and chemical degradation. Precise dimensional accuracy ensures proper fit and stable contact with the rotating shaft surface. By maintaining lubrication integrity and protecting internal bearing components, the K 73028 shaft seal contributes significantly to operational reliability, reduced maintenance requirements, and extended service life of the bearing assembly and associated engine systems.
The two-part ring K 81150 is a robust fastening and positioning component developed for exhaust piping systems in the Sulzer ZV40/48 engine. Designed as a split construction for easier installation and maintenance, it provides secure clamping and alignment of exhaust pipe connections under high-temperature operating conditions. The ring is engineered to withstand thermal expansion, vibration, pressure fluctuations, and mechanical stress commonly present in marine and stationary diesel engine exhaust systems. Manufactured from heat-resistant and corrosion-resistant materials, it maintains structural integrity and reliable fastening performance over extended service intervals. Its precision-machined contact surfaces ensure accurate positioning and even load distribution across the exhaust assembly. By supporting secure exhaust pipe connections and reducing the risk of leakage or misalignment, the K 81150 ring contributes to safe operation, efficient exhaust gas flow, and long-term durability of the exhaust system.
The gear wheel K 74126 is a precision-machined transmission component designed for the fuel transfer pump system of the Sulzer ZV40/48 engine. Its primary function is to ensure reliable transfer of rotational motion within the pump mechanism, enabling consistent fuel flow and stable pressure conditions throughout engine operation. Engineered with accurately machined tooth geometry, the gear wheel provides smooth meshing, efficient torque transmission, and reduced vibration and wear under continuous operating loads. Manufactured from high-strength, wear-resistant materials, it is capable of withstanding demanding mechanical and thermal conditions typically encountered in heavy-duty diesel engine applications. Its precise dimensional tolerances contribute to long-term operational stability and reliable pump performance. By supporting accurate fuel transfer and dependable pump operation, the K 74126 gear wheel plays an essential role in maintaining engine efficiency, reliability, and fuel system integrity.
The locking spring washer, code 515151, is a critical fastening element used in the MAN L21/31 engine to prevent loosening of bolted connections caused by vibration, thermal cycling, and dynamic mechanical loads. Designed with spring characteristics that maintain continuous tension within the joint, it enhances the security and reliability of assembled components during prolonged operation. Manufactured from hardened, wear-resistant materials and treated for corrosion protection, the washer provides dependable performance in harsh marine and industrial environments. By helping maintain proper preload and fastening integrity, the locking spring washer plays an essential role in operational safety, reduced maintenance requirements, and the long-term durability of engine assemblies.
The guide pipe, code 200100, is an important directional component within the MAN L21/31 engine, designed to guide the flow or movement of fluids, mechanical elements, or service tools with precision and stability. Engineered for accurate alignment and smooth passage, it helps ensure correct positioning and reliable operation of associated systems under demanding operating conditions. Manufactured from durable, corrosion-resistant materials and produced to strict dimensional tolerances, the guide pipe maintains structural integrity even under vibration, temperature changes, and continuous use. Its role in maintaining controlled guidance and minimizing operational deviation contributes significantly to engine reliability, maintenance efficiency, and long-term performance.
The expander, code 100100, is a precision-engineered component used in the MAN L21/31 engine to maintain proper pressure distribution, sealing performance, or mechanical positioning within various assemblies. Commonly applied in conjunction with piston rings, sealing systems, or retaining arrangements, the expander provides controlled elastic force that ensures stable contact and reliable operation under fluctuating thermal and mechanical loads. Manufactured from high-grade spring steel or other resilient materials, it is designed to withstand continuous stress, vibration, and elevated operating temperatures without losing its functional properties. By supporting efficient sealing and mechanical stability, the expander contributes to improved engine efficiency, reduced wear, and extended component service life.