Endurance Life of Taper Roller Bearing for Wheel Loader Axles

휠 로더 차축 테이퍼 롤러 베어링의 내구수명

  • Yoo, Dae Won (Machine System Design, Graduate School of Knowledge based Technology and Energy, Korea Polytechnic Univ.) ;
  • Lee, Jai Hak (Dept. of Mechanical Design Engineering, Korea Polytechnic Univ.)
  • 유대원 (한국산업기술대학교 지식기반기술.에너지대학원 기계시스템설계학과) ;
  • 이재학 (한국산업기술대학교 기계설계공학과)
  • Received : 2013.03.08
  • Accepted : 2013.09.03
  • Published : 2013.11.01


A wheel loader is a type of construction machinery that is capable of performing a variety of tasks, and demands on its functional diversity and structural reliability are growing. A wheel bearing is one of the core components that determine the life of the loader; taper roller bearings are commonly used for this purpose. The lifetime of a bearing is typically calculated based only on its load and revolution speed. The initial preload of a taper roller bearing is a critical factor that directly affects its endurance life. In this study, the relations between the endurance life and preload characteristics including the amount of preload according to the weight, rotational speed, and thermal modification applied to tapered roller bearings are presented. When the temperature is $100^{\circ}C$, an excessive preload condition is expected compared with that at room temperature, and the durable life decreases by 20.3 %.


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