Device for surface peening of components

The invention relates to a device for surface peening, in particular for the ultrasonic shot peening of components, especially gas turbine components, with at least one, a vibrating surface having Vibrator, in particular with at least one ultrasonic sonotrode, wherein the or each oscillating surface of the or each vibrator a processing chamber for accommodating a radiant section of the component to be processed is connected. According to the invention the processing chamber (15; 31) in cross-section of at least three legs limited, namely by at least two substantially vertically extending legs (17, 18; 32, 33) and at least one substantially horizontally extending leg of the processing chamber (15; 31 ) are formed by oscillating surfaces of a vibrator, respectively.