Application range:1. Gravity roller widely used in roller conveyor in light-industries for bulk material handling like ... could well protect the roller.7. Gravity rollers falls into lots of categories. Gravity roller, light-duty rollers, snub roller, end roller, ... 20 years). Such as EP conveyor belts, Nylon conveyor belts, Steel cord conveyor belts, special type conveyor belts, Idler Roller and pulley ...