Abstract: The trend towards miniaturization and high efficiency of compressors, along with the industry’s requirement for a 10-year design lifespan, has placed higher demands on the reliability of bearing systems. Focuses on the study of wear at the root of the main and auxiliary shafts of a crankshaft in a jet-integrated single-cylinder compressor. By combining theory with simulation, the key loads causing wear at the crankshaft root are identified. Further simulation analysis is conducted on aspects such as the machining quality of bearing system components and critical structural dimensions to determine the impact trend of bearing system lubrication. An optimization plan is proposed and validated through experiments, effectively solving the wear problem at the root of the main and auxiliary shafts of the crankshaft. The consistency between simulation and experimental results confirms the reliability of the simulation outcomes. The analysis method of the impact of component machining quality on shaft system lubrication and the optimization design approach can provide a reference for subsequent compressor reliability design.

Key words: Compressor, Wear, Optimization design