For example it depends on the roller hearth furnace, passing by the water cooling possible furnace roller null roller hearth type furnace

摘要

PROBLEM TO BE SOLVED: To provide means for increasing the heat dissipation from a support ring onto a shaft, extending the availability of the support ring with reduced formation of scale thereon, and at the same time, ensuring a reliable torque transmission between the support ring and the shaft.;SOLUTION: A water-coolable furnace roller has the shaft supported to the outside of the furnace to be driven in rotation, and is used for conveying a material to be transported, for example, a continuous-cast material through a roller hearth heating furnace provided with the cooling medium ducts 4 and 5 in the hollow space of the shaft and the support ring 7 which is arranged with a receiving bore 1 on the shaft and forms a conveying plane. The furnace roller is characterized in that contact surfaces at the inner diameter of the receiving bore 1 of the support ring 7 and/or at the outer diameter of the shaft 3 are formed as a polygon contour of a substantially constant diameter with the fitting surfaces 6 and 6', i.e., with a so-called weak interference.;COPYRIGHT: (C)2002,JPO