Locomotive Camshaft Bearings: Material Choices and Performance Criteria for EMD Engines
Locomotive camshaft bearings play a critical role in the reliable operation of EMD engines. Selecting the right materials and understanding their mechanical and thermal properties are fundamental to ensure durability and optimum performance under heavy-duty conditions. Bearings must resist fatigue, wear, and thermal stress while maintaining precise clearances to prevent failures and maintain engine efficiency. This article discusses key materials such as aluminum alloys, copper-based alloys, and steel-backed composites, highlighting how their properties influence bearing behavior within locomotive applications. In addition to material selection, proper bearing construction, surface finish, thermal management, and clearance tolerances are essential factors. Each contributes to extending service life and preventing premature failures caused by contamination or thermal expansion mismatches. This comprehensive guide includes detailed comparisons, technical specifications, and practica...