How to prevent conveyor belt sag
Maintaining an adequate belt tension is critical to prevent belt sag along the entire length of the conveyor. At the same time, it’s worth recalling that over-tensioning entails some drawbacks, such as increased drive power consumption and additional stress on the belt and other components. Thus, the most recommended solution to prevent an excessive deflection of the belt is correctly supporting it from underneath. The belt line must be stabilized, providing a strong and rigid support in the loading zones so that it can remain consistent and flat. The amount of support needed is determined by the specific features of the conveyor and application, including loading zones, size and weight of material load, level of impact forces, and angle and speed of transportation. Belt conveyor idlers exactly fulfill this function: they consist of one or more rollers supported or suspended by appropriate frames and transoms that support the belt and, of course, the conveyed material avoiding failure and spillage.