English to French Tech/Engineering Mechanics / Mech Engineering

Il s'agit d'un système pour faire pivoter des caisses en carton, packs de bouteilles ou de canettes,...
Voici la phrase où le terme apparaît dans le texte à traduire:
- Pack turning is done by using different speeds for adjacent tabletop conveyors to re-orient the pack for the divider with the assistance of ***bump turns*** if needed.

Et l'explication de mon client:
***Bump turns*** are a cost effective turning solution. A simplistic roller arm (***bump turn***) can be fixed or adjustable - even removable - as needed. ***Bump turns*** are most commonly used in low rate applications that do not facilitate a wide range of product sizes. This is an extremely economical box and case turning solution