Single shell rolls are probably the simplest category of roll designs. Thanks to their minimal weight and high cost-effectiveness, they are a suitable and adequate solution for many applications. They can be optionally upgraded using simple spraying fittings for both steam-heated or straightforward heating or cooling applications. Due to the use of a wide variety of materials, including composite materials, the diversity of applications is almost unlimited. In combination with flanged pins, maintenance work on the bearing points can also be carried out within the systems themselves.