Abstract: A system includes a balance drum shaft, a rotating balance drum, a stationary balance drum, an adjustable radial clearance, and a gear wheel. The balance drum shaft has a rotational ability. The rotating balance drum is connected to and disposed circumferentially around the balance drum shaft. The stationary balance drum has an outer circumferential surface, an inner circumferential surface, and drum teeth machined into the outer circumferential surface of the stationary balance drum. The stationary balance drum is disposed circumferentially around the rotating balance drum. The adjustable radial clearance is delineated by an outside of the rotating balance drum and the inner circumferential surface of the stationary balance drum. The gear wheel includes gear teeth. The gear teeth and the drum teeth are configured to interact to rotate the stationary balance drum upon rotation of the gear wheel.