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This report introduces the replacement of traditional rolling bearings (Spherical Roller Bearings SRB / Double-Row Tapered roller bearings TRB) in large wind turbine main shafts (speed 10–30 rpm) with sliding bearings.

This project supplies critical spare parts for petrochemical unit overhauls. Units operate under extreme conditions. As maintenance shifts to condition-based, spare shortages cause 15% of downtime. We integrate data analysis (vibration, temperature, corrosion), precision forging, five-axis machining, HVOF/laser cladding, and SPC (Cpk≥1.33) to produce four lines: compressor impellers/rotors, pump parts, reciprocating components, and high-temperature valves. Blockchain MES ensures traceability. Agile scheduling cuts lead times 20-30%. LCC savings exceed 15%. We provide failure analysis (SEM/EDS) and root-cause advice. This replaces imports, boosts reliability, and makes us a health partner.

Marine Propulsion System Shafting is the core component of ship power propulsion systems, and its technological advancement directly determines propulsion efficiency, operational safety, and economic performance. This paper systematically reviews the design theory, key components, new materials, vibration control, and intelligent monitoring technologies of marine propulsion system shafting, covering critical technical domains including shafting alignment, vibration control, carbon fiber reinforced polymer (CFRP) composite drive shafts, water-lubricated bearing materials, and digital twin monitoring. Intelligent monitoring systems integrating multi-parameter sensors — vibration, temperature, strain, and oil condition — are examined in the context