Definition of journal box in English:

journal box

noun

Mechanics
  • A box that houses a journal and its bearing.

    • ‘The lower part of the journal box was kept full of a mixture of oil and waste material.’
    • ‘During the 30's roller bearings became common, with the noticeable round covers on journal boxes.’
    • ‘When one journal box is done, reverse the cutting tool between the journal boxes and repeat the process for the other journal and reinsert wheelsets.’
    • ‘The heat of friction of the oil-starved bearing and axle ignited the cotton pad inside the journal box that normally kept oil flowing to the bearing.’
    • ‘Friction bearings consist of blocks of metal, usually brass, resting atop the axle and lubricated by oil-saturated wool waste enclosed in a hinged-lid journal box.’