A stationary jaw crusher is a fixed crushing equipment primarily used for primary crushing in mining, quarry, and aggregate processing applications. It features a simple but robust design with two jaw plates—a fixed jaw and a moving jaw—that create a V-shaped crushing chamber. Material is fed into the chamber and crushed between the jaws as the moving jaw reciprocates. Stationary jaw crushers are known for their high capacity, reliability, and ability to handle the hardest rocks and ores.

Unlike mobile or portable crushers, they are installed on a permanent foundation and designed for long-term, continuous operation.

Stationary jaw crushers are primarily used as primary crushers in three main industries:

Mining: Crushing run-of-mine ore (iron, copper, gold, etc.) from 800-1500mm down to 150-300mm for further processing

Quarrying: Processing hard rock (granite, basalt, trap rock) into raw feed for secondary crushers

Aggregate production: Reducing large stone to sizes suitable for concrete and road base materials

Recycling: Primary crushing of C&D waste, though impact crushers are often preferred for contaminated materials

According to industry leaders like Metso, jaw crushers are mainly used as primary crushers in aggregates production, mining operations, and recycling applications.

A stationary jaw crusher operates on a simple compression principle:

Feed: Material is fed into the V-shaped crushing chamber between the fixed jaw and moving jaw.

Crushing: The moving jaw reciprocates, compressing the material against the fixed jaw.

Breakage: Rock is broken along natural fractures by the immense compressive force.

Discharge: Crushed material falls through the bottom opening when particle size is smaller than the closed side setting (CSS).

The eccentric shaft, flywheels, and toggle plate work together to generate the crushing motion and store energy for consistent operation. The closed side setting can be adjusted to control product size.

The key difference lies in installation, mobility, and application.

A stationary jaw crusher is designed for permanent installation. It requires extensive concrete foundations and months of civil works, but delivers the highest capacity—often exceeding 1,500 TPH—with the lowest cost per ton. It is the best choice for large-scale, long-term mining and quarry operations.

A mobile jaw crusher is mounted on a wheeled or tracked chassis for maximum flexibility. It requires no foundation—simply level with hydraulic legs and it is operational within hours. While capacity is typically lower (up to 700 TPH), it offers rapid deployment and easy relocation between job sites. Ideal for contractors, temporary projects, and operations requiring on-site mobility.

In short: Choose stationary for permanent, high-capacity operations with lowest operating costs. Choose mobile for flexibility, fast setup, and the ability to move between sites.

Several factors influence jaw crusher capacity:

Crusher size: Larger feed openings and wider crushing chambers allow higher throughput

Closed side setting (CSS): Smaller CSS produces finer product but reduces capacity

Material characteristics: Hardness, density, and moisture content affect throughput

Feed gradation: Well-graded feed with optimal fines content improves capacity

Feed method: Consistent, controlled feeding maximizes performance

According to industry data, capacity can range from 50 TPH for smaller models to over 1500 TPH for large primary crushers in mining applications. Crusher selection should consider both peak capacity and average production requirements.

Selecting the right jaw crusher for your operation involves several key considerations:

Feed material: What is the hardness, abrasiveness, and maximum size of the rock or ore I am crushing?

Capacity requirements: How many tons per hour does my operation need to process?

Product size: What is the target output size required for my downstream processes?

Application type: Am I in a hard rock mine, a limestone quarry, or a recycling operation?

Installation constraints: Do I have adequate space for feed and discharge arrangements?

Budget and operating costs: What are my targets for initial investment and long-term cost per ton?

The best approach is to work with equipment manufacturers who can perform material testing and provide recommendations based on your specific rock characteristics and production goals.