主权项 |
1. A crusher for crushing mineral material including a substantially fixed crushing element and a pitman as a crushing element configured to be movable, which crushing elements are arranged to receive a force, the crusher further comprising:
at least two hydraulic cylinders and a piston in each hydraulic cylinder; a piston rod attached to the piston and extending through a first end of the hydraulic cylinder and being in connection with the crushing element configured to be movable; a hydraulic fluid connecting channel between said at least two hydraulic cylinders which connecting channel is connected to a hydraulic fluid space of the hydraulic cylinder to be pressurized by the crushing force; wherein said connecting channel is dimensioned so that the diameter of the hydraulic fluid space, to be pressurized by the crushing force, of said hydraulic cylinder is at least 25 times larger than the flow diameter of the connecting channel. |