Centrifuge and method for monitoring a torque

A solid bowl screw centrifuge for processing drill sludge, comprising:

• a rotatable drum;
• a rotatable screw;
• a drive operatively configured to drive the drum and the screw, wherein the drive includes a drive motor and a gear arrangement for generating a differential rotational speed between the drum and the screw during operation of the centrifuge;
• an overload lever arm triggerable in an event of a torque overload, wherein a gear input shaft of the gear arrangement is rotationally fixable by the overload lever arm,
• wherein the overload lever arm is directly and detachably connected at one end thereof and at a radial distance from a rotation axis of the gear input shaft to a part connected to the gear input shaft, in a rotationally fixed manner, wherein the overload lever arm has a receptacle at the one end thereof, wherein the part connected to the gear input shaft is a pulley, and wherein the receptacle presses against a bolt of the pulley.