Patent ID: 7285085

Claim:
An automatic balancing rotor for a centrifuge, comprising: a plurality of rotating arms having the same radial length and being arranged around a centrifugal rotating shaft, and being spaced out at regular angular intervals, with a plurality of buckets containing samples therein supported by the rotating arms; a balance weight provided in each of the rotating arms to be movable in a radial direction, thus compensating for imbalanced centrifugal force applied to the buckets during a centrifugal separation, the balance weight including an aperture through a center thereof; and a balance weight mover to horizontally move the balance weight in the radial direction of each of the rotating arms; the balance weight mover comprising: a balance weight moving shaft radially provided in the rotating arm and having an outer surface thereof and extending through the aperture of the balance weight, the balance weight being mounted on and movable radia balance weight moving shaft.