The working principle of the jaw crusher is to perform periodic reciprocating motion of the movable jaw plate against the fixed jaw plate. The material is crushed by extrusion, splitting, and impact between the two jaw plates. When the movable jaw plate approaches the fixed jaw plate, the material is crushed; when the movable jaw plate leaves the fixed jaw plate, the crushed material is discharged from the discharge opening by gravity.

The product features of the jaw crusher include:

• Low noise and less dust.
• Large crushing ratio and uniform product particle size.
• Simple structure, reliable operation, and low operating cost.
• Safe and reliable lubrication system, easy parts replacement, and simple maintenance.
• Deep crushing cavity without dead zone, improving feeding capacity and output.
• Energy saving: single machine saves 15%–30% energy, system saves more than double.
• Wide range of discharge opening adjustment to meet different user requirements.

Jaw crusher is the basic equipment of the mining crushing production line, mainly used for coarse crushing of raw stones in quarries. When selecting a jaw crusher, it should be considered whether it can meet the needs of the mine, whether the equipment is durable, and whether there is good maintenance support. The selection of jaw crusher is not difficult, the key is to understand its performance in the crushing production line:

• Meeting the needs of the mine: The jaw crusher needs to meet daily operation requirements, ensure that the daily output of the production line meets the work demand. At the same time, it also needs to meet emission requirements, ensuring that the pollution generated during the operation of the crusher meets emission standards.
• Durable equipment: The jaw crusher needs to have durable characteristics to ensure long-term stable operation.
• Maintenance support: Before purchasing the equipment, it is very important to understand its after-sales maintenance service to ensure that the equipment can be repaired in time when problems occur.