ROCK DRILLING ARRANGEMENT AND MACHINE

A rock drilling arrangement (100), comprising an impact device (1) comprising a frame (2), pressure chambers (3a, 3b) in the frame (2), and a piston (4) arranged in the impact device (1). The arrangement further comprises a rear mounting arrangement (5) for attaching the impact device (1) to a carriage(6), a front mounting arrangement (7) for attaching the impact device (1) to a machine component (10), at least one fore pressure accumulator (8) arranged on front side of the rear mounting arrangement (5) in an axial direction (X) of the piston, and at least one rear pressure accumulator (9) arranged on back side of the rear mounting arrangement (5). The fore pressure accumulator (8) and the rear pressure accumulator (9) are connected to one of the pressure chambers (3a, 3b) and arranged to absorb pressure fluctuations in said pressure chambers (3a, 3b).