راهنمای تجهیزات معدنی: What Equipment Should You Use for Primary Crushing, Fine Crushing and Mining Production Lines? A Complete Guide to Jaw Crushers

Jaw crushers are currently the most commonly used crushers internationally, featuring a large crushing ratio, uniform product size, simple structure, and easy maintenance. They are divided into coarse crushing and fine crushing types. Among them, medium and large jaw crushers are the company's flagship products, offering a high crushing ratio, uniform product size, and simple structure. Especially in the design and production of large jaw crushers, the company has reached a leading level domestically. The maximum compressive strength of the material to be crushed is 320MPa, and they are widely used in mining, metallurgy, building materials, chemical industry, and sand and gravel yards. Why choose a jaw crusher? First, it has a large crushing ratio, reaching 4-6 or even higher, capable of crushing large pieces of material into smaller sizes in a single pass. Second, the product size is uniform, and the discharge size can be precisely controlled by adjusting the discharge opening to meet different finished product requirements. Third, the structure is simple. It consists of a frame, eccentric shaft, large belt wheel, flywheel, movable jaw, side guard plate, toggle plate, toggle seat, gap adjustment screw, return spring, fixed jaw plate, and movable jaw plate, making maintenance convenient and production costs low. Fourth, it has strong adaptability. The maximum compressive strength of the material to be crushed is 320MPa, suitable for processing ores and rocks of various hardness. Fifth, it has high output. Medium and large jaw crushers are optimally designed for high output and uniform particle size, suitable for large-scale mining and sand and gravel production lines. Jaw crushers are mainly used for coarse and medium crushing in mining, ore and flux crushing in metallurgy, limestone, gypsum, and clinker crushing in the building materials industry, raw material crushing in the chemical industry, coarse crushing in aggregate production lines at sand and gravel yards, and stone crushing for roadway, railway, water conservancy, and construction projects. The users who need jaw crushers include mining enterprises, sand and gravel yards and aggregate producers, equipment procurement departments of metallurgy, building materials, and chemical companies, road, bridge, and water conservancy engineering construction units, EPC contractors of crushing and screening production lines, equipment dealers and inventory holders, and overseas mining and building materials project purchasers. Under what circumstances should a jaw crusher be selected or replaced? When mining coarse crushing requires equipment with a high crushing ratio and high processing capacity; when sand and gravel aggregate production lines need coarse crushing equipment to break large stones into sizes that medium and fine crushing equipment can handle; when old jaw crushers are severely worn, have insufficient capacity, or have difficulty adjusting the discharge opening, they need to be replaced. Establishing a new production line requires configuring a jaw crusher based on material hardness, feed size, and finished product requirements; export projects require jaw crushers suitable for overseas voltage and high compressive strength material conditions. How to choose a jaw crusher? Step 1: Confirm the material's compressive strength; jaw crushers are suitable for materials with compressive strength not exceeding 320MPa. Step 2: Determine the maximum feed size, ensuring that the material size does not exceed 80-85% of the jaw crusher's feed opening, and choose the model with the corresponding feed opening size. Step 3: Determine processing capacity and select the model in the range of 15-700t/h based on production line capacity requirements. Step 4: Confirm the discharge opening adjustment range, and choose a suitable discharge opening range (15-225mm) according to the finished product size requirement. Step 5: Confirm motor power, choose a motor of 22-280kW according to processing capacity and material hardness. Step 6: Choose coarse or fine crushing; the PE series is for coarse crushing, models PE250×750 and below are for fine crushing (corresponding to the PEX series). Step 7: Confirm the installation foundation; the jaw crusher must be installed on a solid concrete foundation and fixed with anchor bolts. Step 8: Confirm environmental protection and automation configuration; dust removal systems and central control systems can be equipped.

Model example: `PE600×900`, meaning a PE series jaw crusher with a feed opening of 600×900mm. PE is the coarse crushing series, PEX is the fine crushing series.

PE/PEX series jaw crusher models and parameters table

Model	Feed opening size (mm)	Maximum feed size (mm)	Discharge opening adjustment range (mm)	Processing capacity (t/h)	Motor power (kW)	Overall dimensions (L×W×H mm)	Coarse/Fine crushing
PE400×600	400×600	350	40-90	15-60	30	1650×1588×1050	Coarse crushing
PE500×750	500×750	425	50-100	40-110	55	1956×1918×1920	Coarse crushing
PE600×900	600×900	500	60-125	90-180	75	2290×2733×2280	Coarse crushing
PE800×900	800×900	600	80-140	100-220	90	2450×2950×2490	Coarse crushing
PE750×1060	750×1060	630	60-150	110-380	110	2531×2455×2783	Coarse crushing
PE900×1060	900×1060	700	100-160	180-380	110	2900×2657×2950	Coarse crushing
PE900×1200	900×1200	750	110-165	220-450	110-132	3100×2760×3260	Coarse crushing
PE1200×1500	1200×1500	950	115-195	250-500	180-220	3710×3446×4075	Coarse crushing
PE1500×1800	1500×1800	1200	135-225	350-700	280	5100×4700×4300	Coarse crushing
PE250×750	250×750	210	15-50	15-30	22-30	1400×1751×1515	Fine crushing
PE350×750	350×750	300	15-50	18-40	30	1485×1680×1648	Fine crushing
PE250×1000	250×1000	210	15-60	15-60	30	1550×1964×1380	Fine crushing
PE250×1200	250×1200	210	15-60	20-60	37-45	1530×1946×1380	Fine crushing
PE300×1300	300×1300	250	15-60	10-65	55-75	2000×2320×1730	Fine crushing
PE500×1500	500×1500	400	15-60	50-100	75	2000×2330×1730	Fine crushing

General Technical Parameters Table

Parameter	Specification
Series	PE (coarse crushing) / PEX (fine crushing, some small models in the table are often named PE, but they are actually fine crushing structure)
Type	Jaw Crusher
Maximum Compressive Strength	320MPa
Feed Opening Size	400×600–1500×1800mm
Maximum Feed Size	210–1200mm
Discharge Opening Adjustment Range	15–225mm
Processing Capacity	10–700t/h
Motor Power	22–280kW
Crushing Ratio	Large (4-6 or higher)
Finished Product Size	Uniform
Structural Features	Simple structure, easy maintenance, low production cost
Applicable Materials	Various hard ores and rocks (compressive strength ≤ 320MPa)

Dimension Drawing and Key Dimensions: `[Image: /images/jaw-crusher-dimension-drawing.webp]`

Material Table

Component	Standard Material	Optional Material	Description
Frame	Cast Steel / High-Strength Welded Carbon Steel	Wear-Resistant Steel Plate	Bears crushing reaction force, requires high rigidity
Jaw Plate (Fixed / Movable)	High Manganese Steel (ZGMn13)	High Chromium Cast Iron, Alloy Steel	High wear resistance, extends service life
Eccentric Shaft	40Cr/42CrMo	Forging	Quenched and tempered, withstands huge torque
Bearing	Self-aligning roller bearing	Double row cylindrical roller bearing	Capable of withstanding heavy loads and impacts
Toggle plate	Cast iron / Cast steel	Alloy steel	Overload protection, replace after breakage
Flywheel / Pulley	Cast iron	Cast steel	Energy storage, ensures smooth operation
Side guard plate	High manganese steel	Wear-Resistant Steel Plate	Protect the side wall of the frame
Motor	All-copper coil motor	Explosion-proof motor	Standard three-phase asynchronous motor
Control box	Carbon steel / Stainless steel	Rainproof and dustproof type	Optional variable frequency speed control

Installation method: Jaw crushers must be installed on a solid concrete foundation, which should withstand the weight of the equipment and the huge impact load during crushing operations; during installation, ensure the foundation level meets the requirements and tighten anchor bolts according to torque specifications; after positioning the equipment, adjust the level to ensure the eccentric shaft is parallel to the motor shaft; the motor and crusher are connected via a V-belt, adjust belt tension to ensure smooth transmission; the discharge port adjustment mechanism should be flexible, ensuring the discharge port size meets requirements; after installation, conduct no-load test run, check whether the flywheel rotates smoothly, and whether there is abnormal vibration and noise, and confirm the correct movement trajectory of the moving jaw; during load test run, gradually increase the feeding amount, monitor crushing effect and motor current to ensure it does not exceed rated current; equip with dust removal system to reduce dust pollution; can be equipped with a central control system to achieve online monitoring and automatic control.

Application scenarios table

Industry	Application	Recommended configuration	Key requirements
Mining	Coarse and medium crushing operations	PE600×900–PE1500×1800	High crushing ratio, high processing capacity, wear resistance
Sand and Gravel Quarry	Aggregate Production Line Coarse Crushing	PE500×750–PE1200×1500	High output, uniform particle size
Metallurgy	Ore and flux crushing	PE600×900–PE900×1200	Suitable for high hardness materials, reliable
Building Materials	Limestone, gypsum, clinker crushing	PE400×600–PE900×1060	Large crushing ratio, easy maintenance
Chemical Industry	Raw material crushing	PE400×600–PE600×900	Corrosion-resistant, easy to clean
Highways and Railways	Stone crushing, roadbed construction	PE500×750–PE900×1200	Convenient to move or fixed installation
Water Conservancy Projects	Sand and gravel aggregate production	PE600×900–PE1200×1500	High capacity, high reliability
Fine Crushing and Sand Making	Fine crushing, pre-treatment for sand making	PE250×750–PE500×1500	Small discharge opening, uniform particle size

Note: Jaw crushers are suitable for materials with a compressive strength not exceeding 320MPa. The maximum feed size should not exceed 80-85% of the feed opening to avoid blockage or damage to the equipment. The discharge opening adjustment range is 15-225mm and can be adjusted according to the finished product requirements. For explosive environments, an explosion-proof motor should be selected. High abrasive materials are recommended to use high-chrome cast iron jaw plates.

Selection notes (compared with cone crusher and impact crusher): The core difference between jaw crushers and cone crushers and impact crushers lies inthe applicable material hardness and crushing stage. Jaw crushers adopt a compression crushing principle, suitable for materials of various hardness (compressive strength ≤320MPa), mainly used for coarse and medium crushing, with large feed size and large crushing ratio, but the finished product shape is mostly elongated and flaky; cone crushers also adopt the compression crushing principle, mainly used for medium and fine crushing of high hardness materials, with high processing capacity and better product shape, but high equipment investment; impact crushers adopt an impact crushing principle, mainly used for medium and fine crushing of soft to medium-hard rock, with good product shape and reasonable gradation, but the wear of the rotor hammer is fast and not suitable for high hardness materials. During selection, for coarse crushing of high hardness materials, choose jaw crushers; for medium and fine crushing of high hardness materials, choose cone crushers; for medium and fine crushing of soft rock with high requirements for particle shape, choose impact crushers.

## Technical FAQ

1. What is a jaw crusher?

The jaw crusher is currently the most commonly used crusher internationally, featuring a large crushing ratio, uniform product size, simple structure, and convenient maintenance. It is divided into coarse crushing and fine crushing types, with a maximum compressive strength of material being crushed of 320MPa.

2. What is the capacity of a jaw crusher?

The processing capacity ranges from 10-700t/h, varying according to the model. PE400×600 has 15-60t/h, PE1500×1800 has 350-700t/h.

3. What is the maximum feed size of a jaw crusher?

The maximum feed size is 210-1200mm, varying according to the model. PE250×750 is 210mm, PE1500×1800 is 1200mm.

4. What is the motor power of a jaw crusher?

The motor power ranges from 22-280kW, varying according to the model. PE250×750 is 22-30kW, PE1500×1800 is 280kW.

5. How to adjust the discharge opening of a jaw crusher?

The discharge opening can be adjusted through adjustment screws or shims. The adjustable range is 15-225mm and can be set according to the required product size.

6. How hard of materials can a jaw crusher process?

It can process various ores and rocks with compressive strength not exceeding 320MPa, suitable for industries such as mining, metallurgy, construction materials, chemicals, and gravel plants.

7. Does a jaw crusher have coarse and fine crushing types?

It is divided into coarse and fine crushing types. The PE series is for coarse crushing. Models PE250×750 and below (corresponding to some manufacturers' PEX series) are for fine crushing. Users can choose according to feed size and required product size.

8. What are the wear parts of a jaw crusher?

Jaw plates (fixed and movable), toggle plate, side guard plate, bearings, etc., among which the jaw plate is the main wear part. It is recommended to select high manganese steel or high chromium cast iron.

9. What is the working principle of a jaw crusher?

The motor drives the pulley to rotate, which drives the eccentric shaft to rotate, causing the movable jaw to perform periodic reciprocating motion. The material is crushed by being squeezed, split, and bent between the fixed jaw plate and the movable jaw plate. The crushed material is discharged from the discharge port.

10. What are the common faults of a jaw crusher?

Toggle plate breakage (overload or foreign object entry), jaw plate wear (highly abrasive materials), bearing overheating (poor lubrication or overload), abnormal flywheel rotation (loose belt or damaged eccentric shaft), discharge port blockage (uneven feeding or too small a discharge port).

11. Does a jaw crusher need a foundation?

Yes. The jaw crusher needs to be installed on a solid concrete foundation, which must bear the equipment’s own weight and the huge impact load during crushing operations, and be fixed with foundation bolts.

12. How to maintain a jaw crusher?

Regularly check the wear of the jaw plates, and replace or adjust them in time; regularly check the wear of the toggle plate and side guard plate; regularly check the bearing lubrication, and replenish or replace the grease; regularly check the belt tension; regularly check whether the foundation bolts and connecting bolts are loose; regularly clean the accumulated material and foreign objects in the crushing chamber.

13. What is the difference between a jaw crusher and a cone crusher?

The jaw crusher uses the principle of compression crushing, suitable for materials of various hardness, mainly used for coarse and medium crushing, with large feed size and high crushing ratio, but the finished product is mostly needle-like; the cone crusher also uses the principle of compression crushing, mainly used for medium and fine crushing of high-hardness materials, with high capacity and better product shape, but higher equipment investment.

14. What is the difference between a jaw crusher and an impact crusher?

The impact crusher uses the principle of impact crushing, mainly for medium and fine crushing of soft rock and medium-hard materials, producing good-shaped and well-graded products, but the hammers wear quickly and it is not suitable for high-hardness materials; the jaw crusher uses the principle of compression crushing, suitable for materials of various hardness, mainly for coarse crushing, with large feed size and high crushing ratio.

15. Can a jaw crusher be used in a mobile crushing plant?

Yes, the jaw crusher is one of the most commonly used main machines in mobile crushing plants. Tracked or wheeled mobile jaw crusher stations are suitable for construction waste processing, road and bridge construction, mining, and other situations requiring frequent relocation.

16. What is the service life of a jaw crusher’s jaw plate?

The service life of the jaw plate depends on the abrasiveness, hardness of the material, and feeding method. Manganese steel jaw plates can last for several hundred hours when processing medium-hard materials. When processing highly abrasive materials, high-chromium cast iron or alloy steel jaw plates should be used.

17. Can the jaw crusher be customized?

The feed opening size, processing capacity, motor power, jaw plate material (manganese steel/high-chromium cast iron/alloy steel), motor configuration (explosion-proof motor), dust removal system, central control system, variable frequency speed regulation, etc. can be customized.

18. How does the jaw crusher prevent overload?

Overload protection is achieved through the toggle plate. When an uncrushable object enters the crushing chamber, the toggle plate breaks first to protect the main equipment from damage. Production can resume after replacing the toggle plate.

19. What is the crushing ratio of a jaw crusher?

The crushing ratio of a jaw crusher is usually 4-6, and can reach up to 8-10. The specific ratio depends on the material hardness and the adjustment range of the discharge opening.

20. Does the jaw crusher comply with RoHS and REACH?

Standard jaw crushers comply with RoHS and REACH regulations and do not contain SVHC (substances of very high concern). Specific compliance should be based on the product test report.

Technical FAQ

What data should I send for a crusher quotation?

Provide material type, maximum feed size, capacity, required product size, moisture, working hours and the upstream and downstream equipment.

How do I compare two crusher models?

Compare the same duty point: capacity, feed opening, discharge range, motor power, wear-part life, maintenance access and total operating cost.

Authoritative references

For standards and safety context, see ISO standards and the U.S. Mine Safety and Health Administration. Confirm the exact local requirements for your project.

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