Crusher for mineral materials or recycled materials

A crusher for mineral materials or recycling materials, comprising:

• a first crusher body:
• a movable second crusher body arranged such that a crushing gap is formed between the first and second crusher bodies;
• a hydraulic cylinder coupled to one of the crusher bodies and configured to permit an evasive motion of the coupled one of the crusher bodies to increase a width of the crushing gap, the hydraulic cylinder including a pressure space;
• and
• a pressure relief valve including:
• a pressure chamber communicated with the pressure space of the hydraulic cylinder;
• a chamber area communicated with a pressure equalization area exterior of the pressure relief valve;
• a pressure relief piston movable in an actuating direction between a closed position and an open position, wherein a fluid-conveying connection between the pressure chamber and the pressure equalization area is blocked in the closed position and is at least partially open in the open position;
• and
• the pressure relief piston including at least one piston pressure surface delimiting the pressure chamber in the closed position transversely to the actuating direction of the piston, the pressure relief piston including a surface area at an end facing away from the pressure chamber, which surface area delimits the chamber area transverse to the actuating direction of the piston to transfer a closing force to the pressure relief piston in a closing direction of the closed position when pressure is applied in the chamber area.