In an apparatus for clamping and releasing a gearwheel rim with respect to a main gearwheel that bears the gearwheel rim, a clamping apparatus includes an axially guided, displaceable clamping plate clamping the gearwheel rim between the plate and the main gearwheel. Antifatigue bolts are used for such a purpose. The bolts are expanded by an actuator for releasing the clamped gearwheel rim to an extent that cancels the clamping action.

 
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< Device for defining participants of a control system for a printing machine

> Reusable printing plate, printing press and printing unit having the printing plate, process for imaging the printing plate and process for preparation of a fluorinated organic phosphonic acid
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