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 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 a pressure equalization area exterior of the pressure relief valve 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, wherein in the closed position of the pressure relief piston a projection of the at least one piston pressure surface in a projection plane transverse to the actuating direction of the pressure relief piston delimits only a part of the pressure chamber transverse to the actuating direction of the pressure relief piston.