Impact Crusher

What is an Impact Crusher? What is its Core Purpose?

The core purpose of an impact crusher is material crushing and shaping. It crushes large-size raw materials into medium or fine aggregates with uniform particle size, which is suitable for high-quality aggregate production, mineral processing crushing, construction waste recycling and other working conditions.

Impact crushers are essential equipment in aggregate production lines. They can handle materials with medium hardness or low hardness efficiently, and produce cubic finished products with few needle-like particles. After crushing by impact crusher, materials can be directly used for road construction, building construction, concrete mixing and other fields. It is a high-efficiency crushing machine designed for continuous operation, which can quickly complete coarse, medium and fine crushing operations and provide qualified materials for downstream processes.

How Does the Impact Crusher Transform Rock into Uniform Aggregate?

The Impact Crusher works on the principle of high-speed impact and rebound crushing.

Inside the crusher, there are rotor assembly with hammerheads, impact plates, crushing chambers and other key components. When the rotor rotates at high speed, the hammerheads throw the materials into the crushing chamber.

• Impact Crushing Zone: Materials are hit by high-speed hammerheads and crushed instantly.
• Rebound Crushing Zone: Crushed materials fly to the impact plate and rebound, colliding with subsequent materials for secondary crushing.
• Shaping Zone: Materials are repeatedly impacted and rubbed between hammerheads and impact plates, finally forming uniform cubic aggregates and discharged from the bottom.

The rotor speed and impact plate gap are adjustable. By changing these parameters, you can control the discharging particle size accurately and meet different production needs.

Single Rotor vs. Double Rotor: Which Configuration Suits Your Material?

1.Single Rotor Impact Crusher (For Medium and Small Output)

Structure: Single high-speed rotor, compact structure, small footprint.

Different from extrusion crushing equipment, Leike Machine impact crusher relies on impact force to crush materials, with low needle-flake particle content in the finished product. The cubic finished material fully meets the standard of high-standard concrete, road paving aggregate and high-quality machine-made sand. It is an indispensable crushing equipment for large aggregate plants, cement plants and solid waste recycling projects.

Primary vs Secondary Impact Crusher: Which Stage Fits Your Process?

Primary Impact Crusher

Large feeding port design, super large feeding size, suitable for coarse crushing of raw ore directly mined in the quarry. High single-hour output, strong processing capacity, matching large-scale production lines.

Secondary Impact Crusher

Multi-stage crushing cavity design, focusing on fine crushing and shaping. The finished stone has excellent grain shape, which is mostly used for secondary crushing after jaw crusher, to complete deep processing of materials.

Leike Machine can configure primary and secondary impact crushers according to your site conditions, and support customized overall crushing scheme.

Horizontal Shaft Impact (HSI) vs Vertical Shaft Impact (VSI)

HSI Horizontal Shaft Impact Crusher

Cost-effective mainstream model of Leike Machine, stable operation, large output, easy maintenance. Mainly used for stone crushing, construction waste recycling, medium and fine crushing of various soft and medium-hard materials.

VSI Vertical Shaft Impact Crusher

Professional sand making and shaping equipment, rock-on-rock crushing technology, low wear and high finished sand quality. It is specially used for high-quality machine-made sand production and high-grade aggregate shaping.

Impact Crusher Structure & Components

• Feeding hopper
• Upper frame body
• High-speed rotor assembly
• High chromium wear-resistant blow bar
• Impact crushing plate
• Adjusting and locking device
• Hydraulic opening system
• Lower frame
• Discharge port
• Driving motor and transmission part

Blow bars and impact plates are key wearing parts. Leike Machine is equipped with high wear-resistant accessories to extend the service cycle of the equipment.

Crushing Production Line Design

Jaw crushers for sale

If you are interested in jaw crusher, please feel free to contact us! We will provide you with more than two solutions for you to choose from.

Wearing Parts

• Jaw Plate: The key wearing part, made of high manganese steel with high wear resistance and impact resistance.
• Toggle Plate: Safety part, protects the crusher from overload damage.
• Bearing: High-quality rolling bearing, stable operation, long service life.Common specifications: Customized according to crusher model, with high interchangeability.

• Common specifications: Customized according to crusher model, with high interchangeability.

Jaw Crusher Liner

• High Manganese Steel Liner: High impact toughness, work-hardening under pressure, suitable for hard materials.
• High Chromium Alloy Liner: Higher wear resistance, longer service life, suitable for highly abrasive materials.
• Customized thickness: 50-120mm, according to jaw crusher specifications and material characteristics.

Technical Parameters of Jaw Crusher

Model	Rotate speed (r/min)	Jaw plate size (mm)	Feed size (mm)	Discharge size (mm)	Capacity (t/h)	Motor power (KW)	Weight (T)
PE250×400	275	250×400	≤210	20-60	1-5	15	2.8
PE400×600	270	400×600	≤340	40-100	5-20	30	7
PE500×750	250	500×750	≤425	50-100	15-30	45	10.5
PE600×900	250	600×900	≤500	65-160	30-55	55	15.5
PE750×1060	250	750×1060	≤630	80-140	45-80	75	28
PE900×1200	230	900×1200	≤750	100-200	65-120	110	50
PE1000×1200	200	1000×1200	≤850	120-220	80-130	110	58
PE1200×1500	180	1200×1500	≤1020	150-250	100-180	160	100
PE1500×1800	160	1500×1800	≤1200	200-350	150-300	280	180

Mobile Jaw Crusher – Advantageous Products

Leike Machine specializes in providing custom-designed mobile jaw crushers, offering unparalleled flexibility and efficiency for your on-site crushing needs. Unlike traditional, fixed-position jaw crushers, our mobile units are integrated with feeding, crushing and conveying systems, engineered for convenient transportation and usage across various locations. This means you can bring the processing power directly to your material, eliminating the costly and time-consuming process of transporting materials to a separate crushing plant.

LEIKE hot sale Jaw Crusher

Why is Output Size Critical for Downstream Crushing or Grinding?

LEIKE Machine specializes in providing custom-designed mobile jaw crushers, offering unparalleled flexibility and efficiency for your on-site crushing needs. Unlike traditional, fixed-position jaw crushers, our mobile units are integrated with feeding, crushing and conveying systems, engineered for convenient transportation and usage across various locations. This means you can bring the processing power directly to your material, eliminating the costly and time-consuming process of transporting materials to a separate crushing plant.

Why is Output Size Critical for Downstream Crushing or Grinding?

The discharge size of jaw crusher directly affects the efficiency of subsequent equipment.

• Suitable discharge size: Reduces the load of secondary crushers and ball mills, improves overall production efficiency, extends the service life of downstream equipment.
• Oversized discharge: Causes blockage and excessive wear of downstream equipment, reduces production capacity.
• Chemicals: You can add lime or other reagents directly into the mill to start the chemical conditioning early.
• Oversized discharge: Causes blockage and excessive wear of downstream equipment, reduces production capacity.
• LEIKE jaw crusher can adjust the discharge opening steplessly to meet different downstream processing requirements.
• Jaw crusher structure and working principle
• Feeding mouth 2. Fixed jaw plate 3. Movable jaw plate 4. Eccentric shaft 5. Bearing
• Toggle plate 7. Adjustment device 8. Discharging mouth 9. Frame 10. Pulley
• The jaw crusher consists of feeding part, crushing part, transmission part, adjustment part, frame and other main parts. The jaw plate is made of high manganese steel, the eccentric shaft is forged from high-quality steel, with high strength and wear resistance, ensuring stable operation under heavy load.

Working Principle of Jaw Crusher

The motor drives the pulley and eccentric shaft to rotate through the V-belt. The eccentric shaft drives the movable jaw plate to reciprocate periodically. When the movable jaw plate approaches the fixed jaw plate, materials are crushed by extrusion and bending. When the movable jaw plate moves away, crushed materials are discharged from the discharge opening under gravity. The adjustment device can change the discharge opening size to get the required particle size.

Why LEIKE Machine jaw crushers?

LEIKE Machine is dedicated to providing efficient and reliable crushing solutions. With over 20 years of crushing equipment technology experience, we produce durable and robust jaw crushers that deliver higher value at lower costs.

• High crushing capacity: Capable of continuous operation with a maximum capacity of up to 1000 t/h, meeting large-scale production needs. Energy efficiency: Optimized motion track reduces energy consumption by 10%–15% compared with traditional models. Durable parts: Jaw plates use high manganese steel and high chromium alloy materials, with 30% longer service life. Flexible design: Stepless discharge adjustment, suitable for different material sizes and production requirements. Optional mobile chassis is available. Reliable lubrication: Centralized lubrication system, easy maintenance, no oil leakage, long bearing life. Eco-friendly: Closed dust-proof design, reduces dust pollution, suitable for urban construction waste treatment. Quality service: LEIKE Machine offers ample wearing parts supply, including jaw plates, toggle plates and bearings, minimizing maintenance and replacement time.

Steel Liners vs. Rubber Liners: Which Material Lasts Longer?

LEIKE Machine is dedicated to providing efficient and reliable crushing solutions. With over 20 years of crushing equipment technology experience, we produce durable and robust jaw crushers that deliver higher value at lower costs.

High crushing capacity: Capable of continuous operation with a maximum capacity of up to 1000 t/h, meeting large-scale production needs.

• Energy efficiency: Optimized motion track reduces energy consumption by 10%–15% compared with traditional models.
• Durable parts: Jaw plates use high manganese steel and high chromium alloy materials, with 30% longer service life.
• Flexible design: Stepless discharge adjustment, suitable for different material sizes and production requirements. Optional mobile chassis is available.
• Reliable lubrication: Centralized lubrication system, easy maintenance, no oil leakage, long bearing life.
• Eco-friendly: Closed dust-proof design, reduces dust pollution, suitable for urban construction waste treatment.

• Eco-friendly: Closed dust-proof design, reduces dust pollution, suitable for urban construction waste treatment.

• Quality service: LEIKE Machine offers ample wearing parts supply, including jaw plates, toggle plates and bearings, minimizing maintenance and replacement time.

High Manganese Steel vs. High Chromium Alloy: Which Jaw Plate Lasts Longer?

The jaw plate is the key wearing part of jaw crusher, and its material directly affects the service life.

• The jaw plate is the key wearing part of jaw crusher, and its material directly affects the service life.
• High Manganese Steel Jaw Plate
• Traditional choice, high impact toughness, work-hardens under pressure, self-improves wear resistance during use.
• Best for: Primary crushing of large hard materials, strong impact working conditions.
• High Chromium Alloy Jaw Plate
• New type wear-resistant material, higher hardness and wear resistance, lower wear rate.
• Best for: Highly abrasive materials, long-term continuous production, reduces replacement frequency.
• The LEIKE Advantage: High chromium alloy jaw plates last 1.5 to 2 times longer than high manganese steel in abrasive material crushing, reducing production downtime and maintenance costs.

How Does the Discharge Opening Adjustment Affect Production Efficiency?

The discharge opening size is the key parameter of jaw crusher, which determines the output size and capacity.

The Logic

• Larger discharge opening: Higher capacity, larger particle size, suitable for primary crushing.
• Smaller discharge opening: Lower capacity, smaller particle size, suitable for pre-crushing before grinding.
• The Adjustment Method
• LEIKE jaw crusher uses wedge or gasket adjustment device, which can realize stepless adjustment of discharge opening size. Operators can adjust it according to downstream process requirements to achieve the best matching between capacity and particle size.
• Common mistake: Setting the discharge opening too small for primary crushing, which reduces capacity and increases wear. It is recommended to set according to the recommended parameters of the model.ing friction is significantly lower than sliding friction. By switching to rolling bearings, we reduce the starting torque required to turn the mill. This means you can use a smaller motor or simply consume less electricity for the same work.

Rolling Bearings vs. Sliding Bearings: Can You Really Save 15% Energy?

Traditional jaw crushers use sliding bearings, which require complex lubrication systems and have large friction resistance.

• The Modern Shift: LEIKE adopts high-quality double-row spherical rolling bearings for all jaw crushers.

• The Benefit: Rolling friction is much smaller than sliding friction, reducing starting torque and operation energy consumption.

• Data: Our clients typically report 10% to 15% energy savings with rolling bearings.

• Maintenance: Grease lubrication, no need for high-pressure oil station, simple maintenance, no oil leakage, suitable for 24/7 continuous operation.

Open Circuit vs. Closed Circuit: Why Pair a Jaw Crusher with a Vibrating Screen?

Running a jaw crusher alone is called “Open Circuit”. The material is crushed once and discharged, with uneven particle size.

The Optimization (Closed Circuit)

Pair the jaw crusher with a vibrating screen to form a closed circuit.

• Unqualified large materials return to jaw crusher for re-crushing

• Jaw crusher crushes materials

• Vibrating screen screens the crushed materials

• Qualified materials enter the next process

Why acts differently

Closed circuit improves the uniformity of discharge particle size, avoids over-crushing or under-crushing, increases overall production efficiency by 20% to 30% compared with open circuit.

How to Calculate the Correct Jaw Crusher Capacity for Your Plant?

Sizing a jaw crusher needs professional calculation, not a guess.

Factors we need from you

1. Material hardness: Bond Work Index, harder materials need larger models.
2. Feed size: Maximum size of raw materials, determines the feed opening size of jaw crusher.
3. Target discharge size: Required particle size for downstream processing.
4. Hourly capacity: Required output per hour.

Reference: PE600×900 jaw crusher can crush 30-55 tons per hour of granite, PE900×1200 can crush 65-120 tons per hour.

Do not buy blindly. Send us your material information, and our LEIKE engineers will select the best model and design the production line for you.

Customer Cases