Under the stable work of crusher, amount of material into the crusher operation and crusher line of shoes should be in an equal relationship. Due to materials to make into the crusher by the increasing throughput quantity large, more crusher operation ability, make the crusher wear gradually increased, so that the crusher broken mechanism.

Crusher material become more harm mainly has two aspects:
1. The material too much, make the crusher work out material particle size can not meet the requirements, reduce the crusher operation ability. The workability of crusher stability has also been affected. Severe cases, also can cause the damage of the crusher, cause safety accidents.
2. As a result of the crusher work environment is open, too much material, crusher operation with less than the speed of loading speed, did not carry on the processing of the material from the crusher side drops, can jam crusher parts. Chunks of material from the side drop endanger the operators. Security is very difficult to guarantee.

In normal operation, according to the performance of the crusher to choose the appropriate feeding speed, which is the basis of the maximum power the crusher can work, also can avoid the operation accident.