The control wheel is located behind the nozzle groups which are fitted into the nozzle chest. Rotor blades with root and shroud band are milled from the solid.
The control wheel blades are highly dynamically loaded, in particular at partial admission. A rolled in wire serves as a damping element for possible vibrations. The following over-pressure rotor blades are equipped with an integrated shroud band. Both the last stages of the condensing turbines are standardized as free-standing twisted blades without a shroud band, which are connected by a so called damping wire. Depending on the specific load situation the blade roots have different shapes as finger, hammer, or fire-tree. All blades are made from 13% chromium steel. Guide blades are fitted into the guide blade carrier.
Each row is equipped with an integral or a riveted shroud band.