| 摘要 |
A rotor assembly comprising a metal shaft having a cup shaped portion at one end thereof, a rotor having a spigot portion for engagement with the cup shaped portion, groove means defined about one or both co-operating surfaces of said portions and a filling material occupying said groove means. The filling material is arranged to have a higher co-efficient of thermal expansion than that of the cup shaped portion of the shaft and is compressed into said groove means so as to interpose a compressive stress upon the spigot portion of the rotor. |
