The lower bearing half, code number K 33220, is an essential support component in the Sulzer ZV40/48 engine's crankshaft assembly. It is specifically engineered to absorb and distribute dynamic loads exerted by the rotating crankshaft, ensuring smooth operation and minimal friction. Manufactured from high-strength, wear-resistant materials, this bearing half plays a critical role in maintaining engine efficiency, longevity, and vibration stability under high-load conditions.
The guide bearing cap, code 11.01254-0169.A, is a precision-fitted component used to secure and guide the motion of critical engine elements such as the camshaft or auxiliary shafts within the MAN L21/31 engine. By stabilizing axial and radial movement, the guide bearing cap contributes to smooth engine timing and mechanical efficiency. Its durable design helps reduce wear, misalignment, and mechanical failure over time, especially in applications involving sustained operational loads.
The quality specification document, code 10.09412-3021-1.0, outlines the rigorous manufacturing and inspection standards for the MAN L21/31 engine. This specification ensures that all components, from castings to precision-machined parts, meet strict criteria for material integrity, dimensional accuracy, and performance reliability. It serves as a critical reference for OEMs, maintenance teams, and suppliers to guarantee consistent quality throughout the engine’s lifecycle and to uphold MAN Diesel's global reputation for engineering excellence.
The main bearing cap with code 11.01254-0168-1.B is a structural cornerstone of the MAN L21/31 engine, designed to securely hold the crankshaft's main bearings in place. Subjected to tremendous mechanical forces, this component ensures that the rotating crankshaft remains perfectly aligned during engine operation. Precision-machined and built to withstand stress, the main bearing cap plays a vital role in maintaining engine balance, minimizing vibration, and extending the lifespan of internal components in high-load marine or industrial environments.
The oil filling eye coded K 32379 is a functional element designed to facilitate easy and clean oil replenishment for the barring engine in the Sulzer ZV40/48 system. Typically located in an accessible position, it acts as both an entry point for lubrication oil and a visual inspection aid to monitor oil levels. Its presence ensures that the barring engine remains properly lubricated, minimizing wear on moving parts and contributing to the reliability and longevity of the entire mechanism.
The knob identified by code K 32378 is a user-interface component used for the manual engagement or release of the arrestor pin in the Sulzer ZV40/48 engine's barring system. This small yet crucial part allows operators to control the locking mechanism of the rotating shaft, ensuring safe operation during manual turning or when the engine is stationary. Engineered for ergonomic handling and durability, the knob simplifies an essential safety function in the daily handling of the engine.