Abstract: A valve of a hydraulically striking device having a housing, the housing comprising a moving member being seated inside the housing to move in a reciprocating manner by means of a hydraulic fluid. The moving member has an inner space, the valve has a return space and a pressure space provided, in the axial direction, at a distance from one another on the inner surface of the housing facing the moving member, wherein the rest of the inner surface of the housing in the same axial positions of the return space and the pressure space forms guide surfaces that are concentric with the moving member and against the moving member for centering the moving member.

Abstract: A valve of a hydraulically striking device having a housing, the housing having a moving member being seated inside the housing to move in a reciprocating manner by means of a hydraulic fluid. The moving member has an inner space, the housing has at least a first abutment surface abutting the moving member, the first abutment surface of the housing has a first surface located in a radial inner portion of the first abutment surface, wherein the first surface is arranged in fluid communication with the inner space, and a second surface located in a radial outer portion of the first abutment surface, wherein the second surface is arranged to form a sealing surface.

Abstract: A valve of a hydraulically striking device having a housing, the housing comprising a moving member being seated inside the housing to move in a reciprocating manner by means of a hydraulic fluid. The moving member has an inner space, the valve has a return space and a pressure space provided, in the axial direction, at a distance from one another on the inner surface of the housing facing the moving member, wherein the rest of the inner surface of the housing in the same axial positions of the return space and the pressure space forms guide surfaces that are concentric with the moving member and against the moving member for centering the moving member.

Abstract: A hydraulically striking device having a cylinder body, the cylinder body forming a cylinder therein, a piston in the cylinder body, configured to move by means of a hydraulic fluid so as to reciprocate between a first and a second position in the cylinder. According to the invention, a first control channel and a second control channel extend from the valve, a first port and a second port open into the cylinder, wherein the first port is coupled to the first control channel and the second port is coupled to the second control channel, the piston having at least one flow space which is arranged to be selectively coupled to the first port and to the second port and allowing the hydraulic fluid to flow in one of the control channels in one direction so as to provide circulation of the hydraulic fluid controlling the valve.

Abstract: A valve of a hydraulically striking device having a housing, the housing having a moving member being seated inside the housing to move in a reciprocating manner by means of a hydraulic fluid. The moving member has an inner space, the housing has at least a first abutment surface abutting the moving member, the first abutment surface of the housing has a first surface located in a radial inner portion of the first abutment surface, wherein the first surface is arranged in fluid communication with the inner space, and a second surface located in a radial outer portion of the first abutment surface, wherein the second surface is arranged to form a sealing surface.