A crusher is a machine that mechanically breaks down large rocks, stones, and mineral ores into smaller particles. It provides aggregates needed for construction materials, infrastructure projects, road making, and recycling. Material is taken via a feeder, crushed through jaw, impact, or cone crushers, and then sized using vibrating screens. Oversized pieces return for further crushing, and sized output is collected via conveyors. Crushers are widely used in concrete and asphalt plants, stone quarries, mining operations, and recycling facilities.

A mobile crusher is a transportable crushing-screening unit mounted on a wheeled or tracked chassis, enabling on-site production. It reduces transportation costs by working directly on site. Material is fed, crushed in multiple stages, screened, and conveyed to stockpiles. Powered by diesel or electric motors, mobile crushers are commonly used in construction sites, road projects, recycling yards, temporary mining setups, and emergency relief operations.

A stationary crusher is a permanently installed high-capacity crushing and screening plant on concrete or steel foundations. Preferred for large-scale, continuous production projects. Raw material is taken from bunkers, crushed initially in primary crushers, refined in secondary units, sized by vibrating screens, and transported to storage via conveyors. The output is collected efficiently under PLC control. Stationary systems are used in large quarries, mining operations, concrete-asphalt facilities, and major infrastructure developments.

The difference between a stationary and mobile crusher lies in portability, capacity, setup time, and infrastructure requirements. Mobile units are portable, have fast setup, minimal infrastructure, and suit short-term projects but have limited capacity. Stationary units offer high capacity and continuous production, require infrastructure, have high investment costs, and are not movable.

A gravel crushing and screening plant processes natural gravel and sand from rivers, streams, or quarries by crushing and screening them into size-graded aggregates. Coarse material is initially crushed, then passed through vibrating screens to separate different sizes. If necessary, a second crushing stage may refine the output. Final gravel sizes are classified as per specifications and conveyed for packaging, storage or sent directly to asphalt or concrete plants. These facilities serve applications like road base production, concrete and asphalt aggregate supply, landscaping, and garden materials.