Patent ID: 8337581

Claim:
A turbomachine oil-separator rotor comprising: a tubular hub; and an annular cap, the tubular hub defining an internal axial passage for fluid and including an outer annular collar, and the annular cap being mounted around the tubular hub, the annular cap comprising both a radial wall and a cylindrical wall that co-operates with the outer annular collar of the tubular hub to define an annular chamber that communicates with the internal passage of the tubular hub and that houses means for depositing oil by centrifuging, wherein the outer annular collar of the tubular hub includes at its outer periphery means for retaining an end of the cylindrical wall of the annular cap radially so as to center the end and prevent the end from deforming radially outwards under effect of centrifugal forces, and wherein an inner peripheral portion of the radial wall of the annular cap bears axially thereagainst and is fastened by nut-and-bolt type means to the tubular hub at a distance from the outer annular collar.