Unpowered roller spiral conveyor has simple structure and various forms, which is suitable for electronics, food, beverage and industrial categories. Unpowered roller screw conveyor through the combination of turning roller machine, can complete a variety of operations in the production line, such as device, detection, waiting, confluence, branch, etc. Together, the unpowered roller screw conveyor after special treatment of bearings, can be applied to a variety of harsh environment. Structural materials: carbon steel spray, stainless steel, aluminum, roller materials: carbon steel galvanized, stainless steel, aluminum, PVC, coated roller, roller width: 50-150 mm, the selection of universal hoof feet, adjustable height, standard device method: spring pressed into the type, internal tooth shaft type (if there is demand, optional other types of shaft).