GNU Collaborative International Dictionary of English

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  1.       

    Axle box . 
    1. A bushing in the hub of a wheel, through which the axle passes.
      1913 Webster
    2. The journal box of a rotating axle, especially a railway axle.
      1913 Webster
      ☞ In railway construction, the axle guard, or pedestal, with the superincumbent weight, rests on the top of the box (usually with a spring intervening), and holds it in place by flanges. The box rests upon the journal bearing and key, which intervene between the inner top of the box and the axle.
      1913 Webster

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