#bearing  a rotating support placed between moving parts to allow them to move easily
  supertype:  #support.device  any device that bears the weight of another thing; "there was no place to attach supports for a shelf"
  part of:  #rotating_mechanism
  subtype:  #ball_bearing__needle_bearing__roller_bearing  bearings containing small metal balls
  subtype:  #fifth_wheel  a steering bearing that enables the front axle of a horse-drawn wagon to rotate
  subtype:  #journal_bearing__journalbearing  the bearing of a journal
     subtype:  #hotbox  a journal bearing (as of a railroad car) that has overheated
  subtype:  #thrust_bearing  a bearing designed to take thrusts parallel to the axis of revolution

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