The paper addresses the diagnostic assessment of operational conditions of gear components in winding head drives of cable winding machines using vibration analysis methods. Vibration diagnostics is a key tool for monitoring the technical condition of rotating machinery, enabling early detection of gear damage without dismantling components. The research aimed to analyze correlations between vibration parameters and the reliability and durability of gear components. Results highlight the importance of precise gear backlash adjustment and the quality of manufacturing processes to minimize damage such as pitting and micro-cracks. Various diagnostic methods were applied, including low-frequency and high-frequency analyses, envelope methods, and acoustic emission methods, confirming their high sensitivity in identifying both initial and severe damages. The findings suggest regular verification of technological processes and proper setup during assembly to enhance reliability and lifespan of winding head drives.