Roller conveyors are one of the most popular material handling systems. As their name suggests, they are made of a series of parallel rollers mounted in frames which provide an easy and fast handling and transportation of large volumes of different kinds of products. Let’s see in detail what they are and how they function. Intuitively, conveyor rollers are cylindrically shaped material handling components. Although they all share the similar working principle, conveyor rollers may be supported by a carrying structure which is driven by a chain, a belt or by gravity. Moreover, roller conveyors may be also motorized by drive rollers, whose integrated motor prevents the need of a further drive unit. Rulmeca, as leader manufacturer of rollers for conveyors, designs and produces all the above-mentioned solutions for the most diversified applications in terms of unit handling.