Jaw Crusher

What is Jaw Crusher?

Jaw Crusher, abbreviated as Jaw Crusher, is a kind of mechanical equipment that utilizes jaw plates to crush, rub and grind materials.

What Is Jaw Crusher Used For?

Jaw Crusher is widely used in the fields of mining, smelting, building materials, highway, railroad, water conservancy and chemical industry for crushing all kinds of ores, rocks and construction wastes, etc. It is an excellent choice for the primary crusher equipment in the complete set of crushing production line. Its high efficient crushing capacity and stable performance make it an ideal choice for handling various hard materials.

In the mining industry, jaw crusher is commonly used for coarse and medium crushing operations of ores; in the building materials industry, it is used for crushing limestone, gypsum and other raw materials; in the construction of highways and railroads, it is used for crushing stone and road base materials; in the water conservancy and chemical industries, it also plays an important role.

Jaw Crusher vs. European Jaw Crusher: Which One Fits Your Application?

When selecting primary crushing equipment for a hard stone or mining plant, two popular choices are the traditional Jaw Crusher and the advanced European Jaw Crusher. While both are designed for coarse crushing of high-strength materials like granite, basalt, and iron ore, they differ significantly in design philosophy, capacity, and long-term operating costs.

Traditional Jaw Crusher: Reliable & Cost-Effective

• Proven technology with a simple structure, easy to maintain
• Suitable for small to medium-sized plants with lower capacity requirements (up to 800 t/h)
• Movable jaw plate swings in an arc, offering a larger discharge opening adjustment range
• Lower initial investment, but relatively higher energy consumption and frequent maintenance needs

European Jaw Crusher (C Series Type): High Efficiency & Heavy Duty

• Advanced crushing chamber design (deep V-shaped) ensures uniform feeding and higher throughput (up to 1,500 t/h)
• Hydraulic adjustment system for discharge opening – faster and safer than manual adjustment
• Integrated motor base reduces vibration and improves reliability
• Larger and stronger bearing design extends service life under heavy-duty conditions
• Higher rotational speed leads to a better reduction ratio and more cubical product shape

Feature	Jaw Crusher	European Jaw Crusher
Crushing Chamber	Traditional shallow V-shape	Deep V-shape (more efficient)
Discharge Adjustment	Shim or wedge (manual)	Hydraulic (automatic, time-saving)
Bearing Size	Standard	Larger, heavy-duty
Motor Base	Separated (requires alignment)	Integrated (reduces installation time)
Max. Capacity	~800 t/h	~1,500 t/h
Ideal For	Small to medium projects	Large-scale, continuous operation

Jaw Crusher ordered by Customer

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Technical Parameters of Jaw Crusher

Model	Feed Port Size (mm）	Maximum Feed Particle Size (mm)	Discharge Port Adjustment Range (mm)	Processing Capacity(t/h)	Eccentric Shaft Speed(r/min)	Motor Power(kw)	Overall Dimensions （Length × Width × Height） (mm)
PE 150×250	150×250	125	10-40	1-3	268	4P   5.5	760×700×860
PE 200×300	200×300	180	15-50	2-6	260	4P   7.5	915×780×990
PE 200×350	200×350	180	18-60	3-10	276	4P   11	1000×914×1112
PE 250×400	250×400	210	20-70	5-21	300	6P   15	1100×1032×1285
PE 400×600	400×600	340	40-100	16-64	270	6P   30	1623×1736×1615
PE 500×750	500×750	425	50-100	40-110	268	6P   55	1920×1850×1920
PE 600×750	600×750	500	150-200	80-240	268	6P   55	2020×1850×1920
PE 600×900	600×900	500	65-160	50-160	254	6P   75	2530×1900×2340
PE 750×1060	750×1060	630	80-180	110-320	245	8P   110	2680×2380×2785
PE 900×1200	900×1200	750	100-200	220-380	208	8P   132	3470×2876×3330
PE 1200×1500	1200×1500	1020	150-350	400-1000	180	8P 160-245	4850×3220×3680
PE 1500×1800	1500×1800	1200	220-350	500-1200	180	8P 280-380	5160×3660×4248
PEX 150×750	150×750	120	18-48	8-25	320	4P   15	1170×1575×1030
PEX 250×750	250×750	210	25-60	13-35	320	6P   22	1550×1730×1470
PEX 250×1000	250×1000	210	25-60	16-52	330	6P   30	1580×2006×1390
PEX 250×1200	250×1200	210	25-60	20-61	330	6P   37	1780×2214×1430
PEX 300×1300	300×1300	250	20-90	16-105	300	6P   55	2210×2320×1723

Working Principle of Jaw Crusher

Jaw Crusher mainly relies on the extrusion between the movable jaw plate and the static jaw plate to crush materials. The electric motor drives the belt and pulley, and the eccentric shaft makes the movable jaw move up and down. When the movable jaw rises, the angle between the elbow plate and the movable jaw becomes larger, which pushes the movable jaw plate to approach the fixed jaw plate, at this time, the material is crushed by extrusion, splitting and bending, etc.; when the movable jaw goes down, the angle between the elbow plate and the movable jaw becomes smaller, and the movable jaw plate leaves the fixed jaw plate under the action of the tie rod and the spring, and the crushed material is discharged out of the discharge port under the action of gravity. With the continuous rotation of the motor, the crusher moves the movable jaw periodically to realize the crushing and discharging of materials to achieve the purpose of mass production.

Advantageous features of Jaw Crusher

• Welded frame structure, firm and reliable: steel plate welded frame, avoid casting defects, more firm and reliable.
• Flywheel design: Flywheel design, effectively reduce vibration, the machine runs more smoothly.
• Quicker and more convenient discharge opening adjustment: discharge opening gasket adjustment is simple, reliable and easy to maintain.
• Large crushing ratio: able to crush larger size materials into smaller particles to meet different production requirements.
• Stable performance: reliable operation, low failure rate, can work continuously for a long time.
• Strong adaptability: suitable for crushing ores and rocks of various hardness.

Jaw Crusher FAQ

Q: What materials can a jaw crusher crush?

A: A jaw crusher is a primary crushing device that can process materials with high hardness, such as granite, basalt, limestone, iron ore, and river pebbles. It can also be used for construction waste recycling. As long as the material’s compressive strength does not exceed 320 MPa and it is not too sticky or soft, it can generally be processed.

Q: How to choose the right jaw crusher model?

A: The selection mainly considers three indicators: maximum feed size, required output per hour, and discharge size. Generally, the feed size should not exceed 80% of the feed opening. It is recommended to tell the manufacturer the material type, hardness, and output target; they will help you calculate and select the appropriate model to avoid wasting electricity by choosing a larger size or affecting output by choosing a smaller size.

Q: What is the output of a jaw crusher?

A: The output depends on the model and the closed-side discharge port (CSS) setting. For example, a 40×51-inch jaw crusher with a CSS of 4-8 inches has an output of approximately 265-855 tons per hour. Different manufacturers have significantly different models; please refer to the equipment parameter table for specific details.

Q: How often should the jaw crusher’s tooth plates (liners) be replaced?

A: It depends on the material hardness. Ordinary limestone and granite generally last 3-6 months without problems. Very hard materials like quartz wear out faster and may need inspection every 1-2 months. Replace them when the tooth height wears more than 3/5 of the way down.

Q: How do I adjust the discharge particle size?

A: This is achieved by adjusting the closed-side discharge port (CSS) at the rear. Adjusting the tension of shims or using a hydraulic wedge system can change the discharge port size. The common adjustment range is between 20-150mm. Note: Adjustment can only be made when the machine is stopped.

Q: Is the jaw crusher noisy and vibrating during operation? Does it meet environmental protection requirements?

A: The new jaw crusher has been optimized for vibration and noise reduction. The noise level at 1 meter away is generally controlled below 85 decibels. As long as the foundation is properly installed, vibration damping pads are added, and the plant is soundproofed, it can easily pass environmental inspections.

Q: What are some common faults of jaw crushers?

A: The main issues are: the main unit not starting or suddenly stopping (possibly due to material jamming or voltage problems), decreased capacity (jaw plate wear or excessive feed), abnormal vibration and noise (loose bolts or bearing problems), and excessively high bearing temperature (insufficient or excessive lubrication).

Q: How to extend the service life of a jaw crusher?

A: Three key points: ① Check bolts for looseness before starting the machine each day; ② Regularly add appropriate grease; ③ Maintain uniform feeding, keeping the crushing chamber at over 80% full (commonly known as “suffocation feeding”), which effectively reduces wear and improves efficiency.

Q: What is the difference between a jaw crusher and a hammer crusher? Which is better?

A: Jaw crushers rely on compression crushing, suitable for high-hardness materials, with a simple structure, durable wear parts, and low maintenance costs; hammer crushers rely on impact crushing, with a large crushing ratio and one-time molding, but the hammers wear out quickly. It’s not a matter of one being better than the other, but rather choosing based on the hardness of the material.

Q: Can a jaw crusher handle wet materials?

A: Not recommended. When the material has a high moisture or mud content, it is easy to clog the crushing chamber, leading to decreased efficiency or even shutdown. If it is necessary to process wet material, it is recommended to add screening equipment at the front end to remove fine materials and mud first.