Patent ID: 6916282

Claim:
A swing rotor for a centrifugal separator, comprising: a rotor body having a central hole into which a drive shaft of a drive motor is coupled, and at least one bucket swingably supported by said rotor body, wherein said at least one bucket comprises a sample container holding member and a metallic member, said sample container holding member is made of a composite material consisting of a reinforcing fiber and a resin, and said metallic member has portions engaged with said rotor body wherein, said metallic member is a metallic ring, said metallic ring has an inner wall fitting to an outer surface of said sample container holding member, said metallic ring has an arrangement for receiving a centrifugal force acting on said sample container holding member, said sample container holding member has an opened top and a closed bottom with a wall extending upright from a peripheral edge of the bottom, a flange is provided at an upper portion of said sample container holding member, said flange being engaged with said metallic ring so that said metallic ring can receive the centrifugal force acting on said sample container holding member, and said flange is made of said composite material consisting of the reinforcing fiber and the resin and is integrally manufactured with said sample container holding member, and said sample container holding member has a rib extending along said flange so as to enhance the rigidity of said flange.