English to French Tech/Engineering Mining & Minerals / Gems

the lateral beam is inside the drum of a coal crushing machine.

Here are a few sentences to provide context:
Fabricated or cast screen plates are manufactured from wear resistant materials. The coal lumps are lifted and dropped onto the screen plates minimising the amount of fines passing through the square apertures. The drum is fitted with lateral beams for stiffness and square aperture screen plates with hole sizes to suit the product required. Thrust Rollers are positioned at each end of the Rotary Breaker to prevent excessive axial float. Osborn Rotary Breakers can accept feed size of 600 mm of coal and high capacity units process up to 2000

Does anyone have the necessary expertise to help me, as there are many, many terms I do not understand in this document!