Abstract: A detent disk for an overload coupling part has a detent disk body configured as a powder-metallurgy produced disk body, the detent disk body has a substantially uniform wall thickness and an inner circumference, and at least one driving device for driving in a rotary manner is provided on the inner circumference and configured as a driving pocket.

Abstract: The present invention relates to a detent disk for an overload coupling, in particular for a machine tool. A detent disk with a shape designed using powder metallurgy is provided. An overload coupling and a method for manufacturing a detent disk are also provided.

Abstract: A drilling device for drilling with diamond tools has a drilling head having a drilling head housing, a drilling shaft rotatably supported in the housing, the drilling shaft having a tool side and being provided with a receiving opening for a drilling tool and extending from the tool side, the drilling shaft being formed as a hollow shaft over a part of its axial length, a drive having a rotary spindle, coupling means for connecting the drilling shaft with the rotary spindle of the drive, the drilling shaft being provided with at least one radial interruption for connecting an interior of the drilling shaft with an interior of the drilling head housing, the drilling head housing having an opening for selective connection of a supply conduit for a cooling/lubricating medium and a suction conduit for drilled material, and a clamping element for releasably connecting the drilling head with a clamping neck of the drive.