| 摘要 |
PURPOSE:To aim at a reduction in wear and loss of a thrust collar, by forming one side of an axial fitting surface between a turbine rotor and the thrust collar into a convex part and the out side into a concave part, respectively, while making up a stepped part on the fitting surface of an axial cross section. CONSTITUTION:One side of an axial fitting surface between a turbine rotor 1 and a thrust collar 2 is formed into a convex part 3a, and the other side into a concave part 3b, respectively, while a stepped part is made up on the fitting surface of an axial cross section, and the turbine rotor 1 and the thrust collar 2 are joined together. With this constitution, they are sufficiently able to cope with axial torsion in an axial thrust and a sense of rotation, thus wear and loss in the thrust collar 2 is well reducible. |
