Discharge device for discharging electrical currents and machine comprising such a discharge device

A discharge device for discharging electrical currents from a rotor part of a machine, the rotor part having a shaft, the discharge device comprising a movable contact element at least partially accommodated in a guide having a guide wall and an outer wall, the contact element being configured to form an electrically conductive sliding contact between a sliding-contact surface of the contact element and a shaft contact surface of the shaft, the sliding-contact surface being intended to form the sliding contact, the contact element being connected to the guide and/or a support element of the machine in an electrically conductive manner, and the contact element being preloaded in the direction of the shaft contact surface by a spring element, the contact element being at least partially wetted with an oily fluid,

• wherein
• at least one conduit for the oily fluid is provided in the guide, the conduit ending in the outer wall or being disposed in the outer wall of the guide;
• wherein the conduit for the oily fluid is a longitudinal recess in the outer wall of the guide.