Patent ID: 8444542

Claim:
A gear apparatus for a solid-bowl screw centrifuge, the gear apparatus including a shaft, a gear, and a bearing, the centrifuge including a drum and a screw, both of which drum and screw are configured to be driven and the screw further configured to be driven at a different rotational speed relative to the drum, the gear apparatus being connected between one or more drive motors and the screw and the drum, the gear apparatus being continuously filled with a lubricant, and the gear apparatus comprising: a hollow drive shaft including two hollow longitudinal channels; an associated lubricant compensating system for lubricating the bearing and including a lubricant compensating container, the lubricant compensating container being connected via a line to the two hollow longitudinal channel; wherein the hollow drive shaft is coupled to one of the drive motors, the drive motor being a direct drive motor to drive the screw, the coupling being in the axial extension of a main axis of rotation of the gear apparatus, and a lubricant from the lubricant compensating container is fed through transverse holes which extend at an angle perpendicular to the main axis of rotation and open into the hollow drive shaft; and wherein the longitudinal channels extend eccentrically to the main axis of rotation or a first of the longitudinal channels extends centrically relative to the main axis of rotation and a second of the longitudinal channels extends eccentrically or coaxially with the first of the longitudinal channels.