What Is a Mining Jaw Crusher?
A Mining Jaw Crusher, also known as a Primary Jaw Crusher or Rock Jaw Crusher, is a heavy-duty crushing machine used as the first-stage crusher in mining, quarrying, and aggregate processing operations. It reduces large rocks, ores, and blasted materials into smaller, manageable sizes through the compressive force generated between a fixed jaw plate and a moving jaw plate.
As one of the most widely used primary crushers in the mining industry, a mining jaw crusher is designed to handle high-compressive-strength materials such as granite, basalt, iron ore, copper ore, and limestone. Its simple mechanical structure, large feed opening, high reduction ratio, and reliable performance make it suitable for continuous operation in demanding working environments.
Mining jaw crushers are commonly installed upstream of cone crushers, impact crushers, vibrating screens, and other processing equipment, forming the primary crushing section of complete stone crushing and ore processing plants. As the primary crusher in the crushing circuit, a mining jaw crusher reduces large feed material to the required size for downstream processing equipment, ensuring smooth material flow throughout the plant.
Jaw Crusher Working Principle
Jaw crusher is based on compressive crushing action between a fixed jaw plate and a movable jaw plate arranged in a V-shaped crushing chamber.
The motor drives the eccentric shaft, which through the pitman and toggle plate system causes the movable jaw to execute a reciprocating motion against the fixed jaw. This motion produces alternating opening and closing of the crushing chamber.
Feed material is introduced from the top of the chamber. As the movable jaw moves toward the fixed jaw, material is compressed, fractured, and broken under high pressure. When the movable jaw retreats, the crushed material moves downward by gravity into the lower chamber. The cycle repeats until the particle size is reduced below the discharge setting, after which the material is discharged from the bottom outlet.
Stone Finished Products
After primary and secondary crushing, jaw crusher-based production lines can produce a range of crushed stone products used in construction and infrastructure projects. Typical finished sizes include 0–5 mm fine aggregates, 5–10 mm and 10–20 mm crushed stone, as well as larger 20–40 mm base materials depending on the crushing and screening configuration.
The machine is widely used in concrete batching, asphalt mixing, road base construction and railway ballast applications.
Mining Jaw Crusher Parts
Mining jaw crusher is composed of a main frame, fixed jaw, movable jaw assembly, eccentric shaft, toggle plate, adjustment device, drive system and wear parts. The structure is designed for primary compression crushing under heavy-duty working conditions.
Parts Show
| Component | Function | Description |
| Main Frame | Structural Support | The main frame is the core supporting structure of the jaw crusher, typically fabricated from cast steel or welded steel plates to withstand heavy crushing loads and continuous operation. |
| Fixed Jaw Plate | Stationary Crushing Surface | Installed on the front frame, the fixed jaw plate works together with the movable jaw to compress and crush materials. |
| Movable Jaw Assembly | Crushing Action | Consists of the movable jaw body, jaw plate, shaft, and bearings. It generates the reciprocating motion required for material crushing. |
| Eccentric Shaft | Power Transmission | The eccentric shaft converts rotational energy from the motor into the swinging movement of the movable jaw and is one of the most critical components. |
| Toggle Plate | Force Transmission & Protection | Transfers crushing force to the movable jaw while serving as an overload protection device to prevent damage from uncrushable materials. |
| Adjustment Device | Discharge Control | Used to adjust the discharge opening size, allowing operators to control the final product size according to production requirements. |
| Flywheel | Energy Storage | Stores kinetic energy during operation and releases it during the crushing cycle to ensure stable and efficient performance. |
| Drive System | Power Supply | Includes the motor, pulleys, V-belts, and transmission components that drive the eccentric shaft rotation. |
| Jaw Plates | Wear Parts | The fixed and movable jaw plates are the primary wear components, usually manufactured from high manganese steel or alloy materials. |
| Bearings | Rotating Support | Heavy-duty bearings support the eccentric shaft and ensure smooth operation under high load conditions. |
| Side Liners | Frame Protection | Installed inside the crushing chamber to protect the crusher body from material abrasion and extend equipment life. |
| Tension Rod & Spring | Toggle Assembly Support | Maintain proper tension on the toggle plate and assist in returning the movable jaw during operation. |
Types of Jaw Crusher
We provides different types of jaw crushers for mining, quarrying, aggregate production, and recycling applications. Depending on material hardness, feed size, required capacity, and installation conditions, customers can choose from standard PE jaw crushers, fine jaw crushers, European jaw crushers, heavy-duty mining jaw crushers, and mobile jaw crushing plants.
PE Series Jaw Crusher
PE series jaw crushers are the most commonly used primary crushing equipment in aggregate and mining industries. They feature a simple structure, stable performance, and low operating cost, making them suitable for crushing limestone, granite, basalt, river stone, and various ores with compressive strength up to 320 MPa.
- Feed opening: 250×400 mm – 1200×1500 mm
- Maximum feed size: 210 – 1020 mm
- Discharge size: 20 – 300 mm
- Processing capacity: 5 – 1000 t/h
- Motor power: 15 – 160 kW
PEX Series Fine Jaw Crusher
PEX series jaw crushers are designed for secondary crushing and are widely used for producing smaller aggregate sizes after primary crushing. Compared with standard PE models, PEX crushers provide finer discharge sizes and better particle shape control.
- Feed opening: 250×750 mm – 300×1300 mm
- Maximum feed size: 210 – 250 mm
- Discharge size: 15 – 90 mm
- Processing capacity: 13 – 105 t/h
- Motor power: 30 – 75 kW
European Jaw Crusher
European jaw crushers adopt optimized crushing chamber design, heavy-duty frame structures, and advanced adjustment mechanisms. They are suitable for large-scale aggregate plants and mining projects requiring higher crushing efficiency, lower wear costs, and greater automation.
- Feed opening: 930×580 mm – 1250×950 mm
- Maximum feed size: 480 – 760 mm
- Discharge size: 70 – 200 mm
- Processing capacity: 120 – 840 t/h
- Motor power: 90 – 200 kW
Heavy-Duty Mining Jaw Crusher
Heavy-duty mining jaw crushers are specially designed for continuous operation in harsh mining environments. With reinforced structures, oversized bearings, and high crushing forces, they are suitable for processing hard and abrasive ores in large-scale mining operations.
- Feed opening: 1200×1500 mm – 1800×2100 mm
- Maximum feed size: 1000 – 1500 mm
- Discharge size: 150 – 350 mm
- Processing capacity: 400 – 1800 t/h
- Motor power: 160 – 500 kW
Mobile Jaw Crushing Plant
Mobile jaw crushing plants combine feeding, crushing, conveying, and power systems on a single chassis, providing flexible and efficient crushing solutions for quarrying, construction waste recycling, and temporary crushing projects. Their mobility reduces foundation costs and shortens installation time.
- Feed size: ≤500 – 760 mm
- Discharge size: 50 – 200 mm
- Processing capacity: 50 – 800 t/h
- Total installed power: 120 – 400 kW
- Chassis type: Wheel-mounted or crawler-mounted
Specifications
| Model | Max Feeding(mm) | Capacity(t/h) | Discharging Opening(mm) | Power(kw) | Weight(kg) |
| PE-250*400 | 210 | 5 – 21 | 20 – 80 | 15 | 2800 |
| PE-400*600 | 340 | 16 – 64 | 40 – 100 | 30 | 6500 |
| PE-500*750 | 425 | 46 – 100 | 50 – 100 | 55 | 10300 |
| PE-600*900 | 500 | 48 – 120 | 65 – 160 | 75 | 15500 |
| PE-750*1060 | 630 | 51 – 208 | 80 – 140 | 110 | 25100 |
| PE-900*1200 | 750 | 144 – 304 | 100 – 200 | 132 | 43300 |
| PE-1000*1200 | 850 | 165 – 342 | 195 – 265 | 132 | 50600 |
| PE-1200*1500 | 1000 | 300 – 800 | 150 – 350 | 220 | 78140 |
| PEX-250*1000 | 160 | 16 – 51 | 20 – 55 | 30 | 6500 |
| PEX-250*1200 | 210 | 20 – 60 | 25 – 60 | 37 | 7700 |
| PEX-300*1300 | 250 | 16 – 104 | 20 – 90 | 75 | 11000 |
Features
Applications of Mining Jaw Crusher
Mining jaw crusher is primarily used for the first-stage crushing of hard and medium-hard rock materials. It reduces run-of-mine (ROM) ore or blasted stone into smaller sizes suitable for secondary crushing and screening systems. The equipment is widely adopted in mining and aggregate production lines due to its ability to handle large feed sizes and high compressive strength materials under continuous operation.
Jaw Crusher vs Other Crushing Equipment – Which One Fits Your Operation Best?
Crushing equipment selection is based on feed size, material hardness, and required output. A jaw crusher is commonly used as primary crushing equipment in mining, quarry, and construction waste recycling lines. Compared with other crusher types, it is better suited for large feed sizes and hard materials, offering stable operation and simple maintenance. Our jaw crusher solutions cover capacities from 1–1000 t/h, depending on model and configuration.
| Item | Jaw Crusher | Hammer Crusher | Impact Crusher | Cone Crusher |
|---|---|---|---|---|
| Working Principle | Compression between fixed and movable jaw plates | High-speed hammer impact crushing | Rotor impact and rebound crushing | Lamination crushing by mantle and concave |
| Structure Design | Heavy-duty frame, fixed + movable jaw plate | Rotor with hammer heads | Rotor + impact plate system | Hydraulic cone structure |
| Processing Capacity | 1–1000 t/h | 5–300 t/h | 30–500 t/h | 50–1200 t/h |
| Efficiency | Stable for primary crushing of large feed | High for soft materials | Good for medium-hard materials | High for secondary and fine crushing |
| Energy Consumption | Moderate (about 0.5–1.5 kWh/t depending on model) | Higher wear-related loss | Medium | Lower in fine crushing stage |
| Footprint | Medium | Compact | Medium | Larger installation space |
| Maintenance | Low, jaw plate replacement every 3–6 months (based on material) | Frequent hammer replacement | Medium liner wear | More complex hydraulic system maintenance |
| Investment Cost | Medium | Low | Medium | High |
| Suitable Materials | Granite, basalt, limestone, river stone, construction waste | Limestone, coal, gypsum | Medium-hard stone, recycled aggregates | Hard ore, fine crushing feed |
| Typical Applications | Primary crushing in mining, quarry, recycling and aggregate plants | Small-scale cement and soft stone crushing | Secondary crushing in aggregate production lines | Fine crushing in mineral processing systems |
Selection Guide
For primary crushing of hard rock and construction waste, Zhongyi Jaw Crusher is the preferred choice. It accepts feed sizes up to ≤1200 mm and delivers stable reduction for downstream processing. Hammer crushers are suitable for soft and brittle materials, while impact crushers are used for secondary crushing. Cone crushers are mainly applied in fine crushing stages requiring controlled particle shape.
In mining, quarry, and recycling projects, Jaw Crusher remains the most widely used first-stage crushing equipment due to its stability, wide material adaptability, and low maintenance requirements. Zhongyi provides complete crushing line solutions based on project capacity and material conditions.
Project Site
Request a Customized Solution
Partner with Zhongyi for expert technical support, customized solutions, and reliable equipment tailored to your ore characteristics and production requirements.
Custom Jaw Crusher Solutions
Different quarry and mining projects require different feed sizes, capacity levels and product specifications. Standard models may not fully match site conditions, especially in high-hardness rock or high-capacity continuous production lines. Custom configuration is available to match actual operating requirements and downstream process layout.
Customizable Parameters
- Feed opening size
- Capacity (TPH)
- Max feed size
- Discharge opening range
- Jaw plate material (Mn13Cr2 / Mn18Cr2 or customized)
- Motor power configuration
- Flywheel size and inertia design
- Frame structure type (welded / cast steel)
- Lubrication system (manual / automatic)
- Installation type (fixed / semi-mobile / mobile skid-mounted)
Please share your raw material, feed size, target output, and capacity requirements. Zhongyi will customize the ideal equipment configuration for your plant, whether your layout feeds a downstream rod mill sand line or direct mineral processing circuit.
Jaw Crusher Manufacturer and Supplier
Zhongyi manufactures mining jaw crushers for quarrying, mining and aggregate production lines. Production covers frame fabrication, machining, assembly and factory testing. Manufacturing is carried out under ISO quality management requirements. Main structures are welded or cast steel, with key components machined in-house. Equipment is supplied with CE compliance for export markets. Product range includes PE series jaw crushers and customized configurations for fixed and semi-mobile crushing plants, selected according to feed size, capacity and material hardness.
Single machines and complete crushing solutions are provided, including vibrating feeders, belt conveyors, cone crushers and screening systems. Layout design and equipment matching are offered based on project conditions. Equipment is applied in primary crushing of hard and abrasive rock. Focus is placed on stable feed control, reduced wear rate and consistent discharge size through proper system configuration. Our service covers model selection, technical support, installation guidance and spare parts supply throughout the equipment lifecycle.
FAQs
1. What is a jaw crusher used for in mining?
A jaw crusher is used as primary crushing equipment to reduce large run-of-mine (ROM) rocks into smaller sizes. It is commonly applied in mining, quarrying and aggregate production lines for hard and abrasive materials.
2. What materials can a jaw crusher process?
Jaw crushers are suitable for hard and medium-hard materials such as granite, basalt, limestone, river stone, and iron ore. It is designed to handle compressive strength up to around 320 MPa depending on model configuration.
3. What is the typical feed size of a mining jaw crusher?
It is suitable for iron ore, copper ore, coal, limestone, granite, river stone, and construction aggregates. It also performs well with high fine-content and mixed feed materials.
4. How does a jaw crusher work?
Material is compressed between a fixed jaw plate and a movable jaw plate. The eccentric shaft drives the movable jaw in a reciprocating motion, creating a repeated crushing cycle until the material is reduced to the required discharge size.
5. What is the output size of a jaw crusher?
Output size is adjustable through the discharge opening setting. Typical primary crushing output ranges from 100 mm to 300 mm depending on the application and downstream process requirements.
6. What factors affect jaw crusher capacity?
Capacity is influenced by feed size, material hardness, moisture content, crusher opening size, and downstream discharge conditions. Proper feed control and correct model selection are critical for stable throughput.
7. What maintenance is required for a jaw crusher?
Routine maintenance includes lubrication system checks, wear part inspection (jaw plates, toggle plate), bolt tightening, and periodic replacement of high-wear components. Proper maintenance reduces downtime and extends service life.
8. What is the difference between jaw crusher and cone crusher?
A jaw crusher is used for primary crushing of large feed materials, while a cone crusher is used for secondary or tertiary crushing to produce finer and more uniform output sizes.
