As we know that the safety device of cone crusher is spring, so the customer should carefully when replace the spring. The overload protection device of cone crusher is spring safety system, which ensures the machine not be damaged when the foreign matters enter into the crushing cavity. When replace the spring, should keep the spring pressure is the same as the crushing force. During operation, the spring does not move; if the foreign matters enter into the crushing cavity, the spring plays the role as supporting sleeve to prevent the foreign matters damage the machine.
If the cone crusher works with overload, the upper part will bounce. Should find the reason and solve the problem. If the problems like this do not be solved, the spring will cause damage to the whole machine.