For quick and effective pre-crushing of extremely hard, hard, medium hard, and brittle materials even ferrous alloys. Maximum feed size stands at 60 mm. Applications areas include the following: chemistry, metallurgy and mining, mineralogy and geology, ceramics, glass industry, rocks and soils. The powerful comminution of the sample is carried out in the Jaw Crusher under high pressure between the fixed as well as the movable crushing jaw that in located inside the enclosed grinding chamber. The last fineness is set easily on from the outside using a 10 stage adjustable gap width between the crushing jaws. The grounded sample automatically falls downward into a drawer for batchwise communication or through a chute into a bigger collection container for non-stop operation. It can also fall directly into a FRITSCH Disk Mill PULVERISETTE 13 classic line for additional comminution.