Jaw crusher are mainly used to proceed the medium particles crushing of various ores and large size materials with the crushing pressure of less than 320Mpa .And Jaw crusher can be divided into two kinds : coarse and fine crushing.And this series of jaw crusher have full specifications of the products and the feeding size is 125mm~750mm ,which have become the primary crushing equipment. And Jaw Crusher is widely used in mining, metallurgy, construction, highway, railroad, conservancy and chemistry industries,etc.  This series of Jaw Crusher feature large reduction ratio, even granularity, simple structure, reliable operation, convenient maintenance, and low cost,etc.   

The main structure of jaw crusher are including frame,eccentric shaft,large pulley,fly wheel ,moveable jawstock,side guard ,toggle plate,backseat of the toggle plate ,fixed or movaable jaw plate and so on.And the toggle plate have taken the secure effects.This working manner of jaw crusher is hyperbolic extrusion. And its working principle is as follows.Through the motor's wheels, the eccentric shaft is driven by the belt and the belt wheel to make the jawstock move by a regulated track. The angle between the toggie plate and jawstock will become large as the up of the jawstock. This will push the moveable jaw plate towards the fixed jaw plate,which can realize the multi-crushing of the materials.The angle between the toggie plate and jawstock will become small as the down of the jawstock. The moveable jaw plate will leave the jaw plate at the presure of the tension rod and spring ,meanwhile ,the final products will be discharged from the dischargeing opening.Along with the continous rotating ,the crusher will comlete the periodic crusing and discharging movement ,which can realize the batch  process.

Invent in the 1858, Jaw crusher firstly have found its extensive application in the road building and then the mining. This series of Jaw crusher feature large crushing ratio, even particle size ,simple structure, reliable function, convenient maintenance ,and low operation cost and so on. And now this kind of jaw crusher has found its extensive application in the field of mining, smelting, building material, highway, railway, water conservancy and chemical industry with, etc. And its anti-crushing pressure should less than 320Mpa .

The jaw crusher  have many form of structure while their working principle are similar. Through the motor's wheels, the eccentric shaft is driven by the belt and the belt wheel to make the jawstock move by a regulated track. And the materials will be crushed by the regular periodic movement .The materials between the two jaw plates will receive multi-crushing functions on the jaw plate . From the beginning ,the pressure is small and the volume of materials will be reduced when the space between the materials become closed and compact. And crushing will happen when the pressure become high up when the strength materials can’t bear . On the contrary, the materials will make free falling movement when the jawstock swing with the opposite direction with the fixed jaw plate .The materials will be crushed in every periodic movement and delivered down a distance. After several kind of these periods , the final products will be discharged by the discharge opening .