Performance Evaluation and Durability Analysis of 52100 Bearings under Varying Heat Treatment Conditions in Aerospace Applications
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DOI:
https://doi.org/10.5281/zenodo.15038386Keywords:
Bearings, Heat Treatment, Vibration Analysis, Aerospace Applications, DurabilityAbstract
This study investigates the performance and longevity of two types of bearings—the motor
bearing and the input module bearing—fabricated from 52100 (100 Cr6) bearing steel, following a 500
hour flight operation. Case evaluations, including hardness testing and vibration analysis, were conducted
after the bearings underwent various heat treatments, specifically at temperatures of 600°C and 700°C. The
findings revealed that the input module bearing heat-treated at 600°C experienced increased vibration
levels, which, while initially within acceptable limits, resulted in the bearing becoming inactive after 900
hours due to the cumulative effects of the operational environment. In contrast, the bearing treated at 700°C
exhibited the highest vibration levels, correlating with excessive iron contamination in the oil, suggesting
a requirement for further thermal processing. Additionally, the analysis indicated that vibration and torque
values remained stable at 600°C but deteriorated significantly at 700°C. These results underscore the critical
influence of heat treatment and operational conditions on bearing performance. Consequently, this research
emphasizes the necessity for optimized heat treatment processes and routine maintenance protocols to
enhance bearing reliability in high-stress and elevated temperature environments, particularly in aerospace
applications. This work provides valuable insights into the factors impacting bearing failure and offers a
foundation for future studies aimed at improving bearing technology and maintenance practices.
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