This jaw crusher could be widely used in mining, smelting building material, highway, railway water conservancy and chemical industries, which can crush varieties of materials with a compressive strength no more than 320MPa. The PE series is used for coarse crushing while PEX Product description. PE series jaw crushers are commonly known as jaw crushers. They are often used as primary crushers in various crushing production lines. Th is jaw crusher simulates the movement of the two jaws of an animal, extruding,twisting and grinding the materials in the crushing cavity though the opening and closing of two jaw platesmoving jaw and fixed jaw).