Jaw Crusher is designed to speed up the crushing of aggregates, ores, minerals, coke, chemicals and others similar materials. It is compact and of rugged construction for general laboratory or small pilot plant operations. The set-up contains two Jaws of hard steel with one Jaw stationary and other moving. The movable jaw produces blows for every revolution reducing over sizing to a minimum. A combination of forward and downward strokes with a rocking action exert pressure on the coarser materials yet permits the finished materials to pass through the jaws. A hopper is provided at the top for feeding material. The smooth jaws ensure a uniform product and easy cleaning is possible. The opening of the Jaw is adjustable. The motor is coupled to the machine through Triple `V' belt drive.