Fluid-actuated rotary drive device

A fluid-actuated rotary drive device, with a housing in which is formed a working chamber, which has at least partially a circular external contour extending concentrically in a main circumferential direction around a central axis, wherein there is mounted in the working chamber a swivel piston connected in a non-rotatable manner to an output member accessible from outside the housing and able to execute a swiveling movement around the central axis, and with a space divider and stop unit which, in adopting an operating position, is or may be inserted in the working chamber so as to be immovable in such a way that it divides the working chamber, together with the swivel piston, into two drive chambers, which may be pressurized in a controlled manner by a driving fluid to generate the swivelling movement of the swivel piston, and at the same time presets the maximum possible swivel angle of the swivel piston, wherein the space divider and stop unit has a space divider element fixed immovably to the housing with sealing in the operating position and at least one stop element separate from the space divider element and while adopting a stop position being fitted or able to be fitted to the space divider element on at least one of the two sides thereof oriented in the main circumferential direction at an assembly interface, and wherein each stop element is fixed in its stop position by sole interaction with the space divider element by means of a snap-in connection on the space divider element, with snap-in connection means formed on the stop element making positive snap-in engagement with complementary snap-in connection means formed on the space divider element, and

• wherein the snap-in connection means of the space divider element comprises a hook-shaped arm forming a plug-in socket having an opening facing towards the radial outside of the space divider element opposite the central axis, and
• wherein the snap-in connection means on the stop element comprises a hook-shaped arm forming a plug-in socket having an opening facing towards the central axis, and
• wherein the hook-shaped arm of the space divider element is received within the plug-in socket of the stop element and the hook-shaped arm of the stop element is received within the plug-in socket of the space divider via a movement of the stop element with respect to the space divider in a plug-in direction radially toward the central axis.