This series have the same main structure as traditional jaw crushers. The main components are rack, eccentric shaft, pulley, side guard plate, toggle plate, slack adjusting rod, restoring spring, fixed toothed plate and swing toothed plate. The motor transmits power through belt, drives the moving jaw upward and downward surround the eccentric shaft. The angle between toggle plate and moving jaw increases when moving jaw moves up and it will push the swing toothed plate toward fixed toothed plate. During this process, the materials are crushed in multiple ways. When the moving jaw moves down, the angle between toggle plate and moving jaw decreases, so the swing toothed plate moves away from the fixed toothed plate by the pulling force of rod and spring. Products crushed will be discharged from the outlet of the crusher. The bulk production is finished by these cyclic activities.