Abstract: A centrifuge (10) is provided with improved flying-lead mounting. The centrifuge comprises a cantilevered shaft (18) upon which the main drive rotor (26) is located. A bobbin (62) is attached to the planetary gear shaft (44), which is driven in planetary motion by the rotation of the rotor (26) and its toothed engagement with the shaft (18) of the cantilevered rotor. A flying lead section (72) extends from the bobbin (62) through an aperture in the cantilevered rotor (26) and is provided with a sheath or supporting tube(s) within which at least a portion of inlet and outlet leads are located.