What is "axle box"

Axle box \Ax"le box`\

1. A bushing in the hub of a wheel, through which the axle passes.

2. The journal box of a rotating axle, especially a railway axle.

   Note: 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.

n. 1 A bushing in the hub of a wheel, through which the axle passes. 2 The journal box of a rotating axle, especially a railway axle.