Roller crusher is made of two crushing rollers in general. While the two rollers are designed in different working ways: one is fixed, the other is active. But why?
The fixed roller is designed to ensure the discharging size. This fixed roller, usually (or feed in metal piece) this roller stands firmly, then it will not only ensures the machine performance, but also ensures the discharging size.
In order to protect the equipment from damaging by materials which can not be broken, the other roller is designed to be active roller. In normal working situation, this roller just slightly slides. When metal pieces are fed into the crusher, roller can give way to protect the machine from damage, at the same time ensure crushing size.
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