Abstract: Device for receiving printing forms at one end thereof in a printing-unit cylinder of a rotary printing machine, wherein the printing-unit cylinder is a printing-form cylinder formed with a cylinder gap and having a shaft extending through the cylinder gap, includes a plurality of receptacle components respectively formed with pairs of mutually opposing clamping surfaces disposed on the shaft for gripping a printing form, at least one adjusting element for swiveling one of the surfaces of the respective pairs thereof formed on the receptacle components against a force of a tension spring acting in a tensioning direction, and the other of the surfaces of the respective pairs thereof formed on the receptacle components having a retaining element actuatable by the one adjusting element for swiveling the other of the surfaces against a force of another tension spring, the shaft being an expansion shaft, the receptacle components being individual gripper elements supported side by side on the expansion shaft in a