The inventive working spindle comprises a spindle housing and a spindle shaft with axial positioning surface and axial contact surface by which the correct axial position of each fitting provided spindle shaft in the spindle housing is obtained. For torque-proof holding of the spindle shaft in the spindle housing, preferably with stationary motor, a braking unit is provided that comprises a radial outer part that is coupled with the spindle housing in a torque-proof manner and a radial inner part that is coupled with the spindle shaft in a torque-proof manner. The largest outer diameter of the peripheral surface of the inner part is smaller than the narrowest location of the through-opening of the spindle housing between the braking unit and the tool side end of the spindle housing. For this reason the spindle shaft can be readily removed from the spindle housing without disassembly measures of the braking unit, if required, and can be reinserted in reverse route. The inventive working spindle is simply constructed and can be versatilely used. Concurrently it is remarkably easy to maintain.

The inventive working spindle comprises a spindle housing and a spindle shaft with axial positioning surface and axial contact surface by which the correct axial position of each fitting provided spindle shaft in the spindle housing is obtained. For torque-proof holding of the spindle shaft in the spindle housing, preferably with stationary motor, a braking unit is provided that comprises a radial outer part that is coupled with the spindle housing in a torque-proof manner and a radial inner part that is coupled with the spindle shaft in a torque-proof manner. The largest outer diameter of the peripheral surface of the inner part is smaller than the narrowest location of the through-opening of the spindle housing between the braking unit and the tool side end of the spindle housing. For this reason the spindle shaft can be readily removed from the spindle housing without disassembly measures of the braking unit, if required, and can be reinserted in reverse route. The inventive working spindle is simply constructed and can be versatilely used. Concurrently it is remarkably easy to maintain.

This disclosure describes a housing part for a pneumatic clamping and/or braking device, the housing part comprising: an annular recess for clamping an annular spring plate between a first contact surface of the housing part defined by the recess and a second contact surface of the housing part defined by the recess; a clamping element having a clamping surface which is designed, when the spring plate is clamped in the recess between the first contact surface and the second contact surface in such a way that a first end of the spring plate is supported on the first contact surface, the spring plate extends from the first contact surface to the second contact surface, and a second end of the spring plate presses on the second contact surface, to transmit a clamping and/or braking force to an object to be clamped and/or braked; wherein the housing part comprises a first latching means and a second latching means, wherein, when the spring plate is clamped in the recess between the first contact surface and the second contact surface, the first latching means is designed to latch the first end of the spring plate on the first contact surface and the second latching means is designed to latch the second end of the spring plate on the second contact surface. The disclosure further describes a clamping and/or braking device for clamping and/or braking an object to be clamped and/or braked, comprising two of the housing parts.

This disclosure describes a housing part for a pneumatic clamping and/or braking device, the housing part comprising: an annular recess for clamping an annular spring plate between a first contact surface of the housing part defined by the recess and a second contact surface of the housing part defined by the recess; a clamping element having a clamping surface which is designed, when the spring plate is clamped in the recess between the first contact surface and the second contact surface in such a way that a first end of the spring plate is supported on the first contact surface, the spring plate extends from the first contact surface to the second contact surface, and a second end of the spring plate presses on the second contact surface, to transmit a clamping and/or braking force to an object to be clamped and/or braked; wherein the housing part comprises a first latching means and a second latching means, wherein, when the spring plate is clamped in the recess between the first contact surface and the second contact surface, the first latching means is designed to latch the first end of the spring plate on the first contact surface and the second latching means is designed to latch the second end of the spring plate on the second contact surface. The disclosure further describes a clamping and/or braking device for clamping and/or braking an object to be clamped and/or braked, comprising two of the housing parts.

The disclosure relates to an annular elastic element for a clamping and/or braking device, the element comprising: an annular spring plate, wherein the annular spring plate has a first annular side surface and a second annular side surface; a sealing element, wherein the sealing element is arranged on the second side surface of the spring plate, and wherein the sealing element forms an inner projection in a region of an inner edge of the annular spring plate and forms an outer projection in a region of an outer edge of the annular spring plate; wherein the inner and/or outer projection of the sealing element each forms a bulge at least in sections. The disclosure further relates to a housing part for a pneumatic clamping and/or braking device and to a pneumatic clamping and/or braking device having such an annular elastic element.