The 3-Roll Troughing Idler is the most commonly used conveyor belt assembly because it supports the belt and creates a trough shape, increasing conveying capacity and reducing material leakage during operation. It typically consists of a central idler and two side idlers with a trough angle (e.g., 20°/30°/35° depending on the design) with a robust chassis/support to mount the assembly to the conveyor frame. This type of assembly is installed on the carry side to support the belt under load. It features customizable idler diameters, lengths, bearing types, and seals to suit operating conditions (dust, humidity, high loads) and ensure a longer lifespan and reduced downtime.