A stone crusher is a machine designed to reduce large rocks into smaller rocks, gravel, sand, or rock dust. It utilizes a high force to break the larger rocks into smaller pieces, typically used for construction purposes. Stone crushers are commonly used in mining, metallurgy, building materials, road, railway, water conservancy, and chemical industries to crush various materials with compressive strength not exceeding 320 MPa. They operate by applying compressive force to the material, breaking it by the inherent strength of the rock or by the force exerted by the machine itself.