Besides of characteristic of large crushing ratio, uniform product size, simple structure, reliable work, easy maintenance, and low operating cost of domestic PE series jaw crusher, hydraulic jaw crusher is with deep cavity design which increases crushing area and enlarge output capacity. The machine is with Hydraulic station and hydraulic cylinder to realize hydraulic adjustment of the discharge opening and save labor cost and shorten maintenance time.It is widely used as coarse crushing (primary crushing) in stone crushing plant for the material that compressive strength is not more than 320MPa which is suitable for many industries such as mining, smelting, building materials, highways, railways, water conservancy and chemical industries etc.