What is jaw crusher machine? Jaw crusher is a commonly used mining machinery and equipment, which is mainly used for medium size crushing of various ores and large materials for subsequent processing and utilisation. It has the advantages of simple structure, reliable operation and convenient maintenance. It is widely used in mining, metallurgy, building materials, highway, railway, chemical industry and other fields.
Materials Suitable for Crushing with Jaw Crushers
Jaw crusher is mainly suitable for processing medium and high hardness materials, including:
- High hardness minerals: it is very suitable for crushing granite, basalt, cobblestone, iron ore, gold ore, copper ore, quartzite and other hard, ductile or brittle rocks and ores within the range of compressive strength ≤250MPa.
- Construction Aggregate: it can crush natural stone, limestone, river pebbles, etc. to prepare sand and gravel aggregate for construction.
- Concrete and Construction Waste: It undertakes important primary crushing tasks when processing recycled aggregates.
- Industrial materials: slag, certain industrial wastes and so on.
Cautions:
- Material size limitation: the feed size needs to be smaller than the width of the feed opening (usually 80%-85% of the width of the feed opening), too large material is easy to clog.
- Humidity and viscosity: poor adaptability to materials with high humidity, high viscosity or excessive mud content, which may cause clogging.
Types of Andamine Portable Jaw Crusher for Sale
According to the raw material size, product size and site construction requirements, you can choose different models of crusher jaws. We have three main types of jaw crushers for sale: standard jaw crusher, European jaw crusher, and fine jaw crusher.
APJ-E Jaw Crusher
- Capacity: 20-800t/h
- Max Feeding Size: 130mm-1000mm
- Motor Power: 5.5-220 kw
- Features: The output particle size is relatively large and requires secondary crushing. It can directly handle bulk materials with a particle size of 1.2 meters.
- Advantages: It has a large crushing ratio, uniform product particle size, simple operation and is easy to maintain.
APJ-V European Jaw Crusher
- Capacity: 65-800t/h, Customizable
- Max Feeding Size: 420mm-1000mm; According to Model
- Motor Power: 75-250 kw; According to Model
- Features: Adopting the most advanced international crushing technology and manufacturing level, high output, low emission.
- Advantages: Handles larger materials for increased throughput. Discharge opening is hydraulically set and adjustable for increased flexibility in product size.
APJ-X Fine Jaw Crusher
- Capacity: 8-95t/h, Customizable
- Max Feeding Size: 120mm-250mm; According to Model
- Motor Power: 15-75 kw; According to Model
- Features: It is also known as secondary jaw crusher, which carries out medium and fine crushing after coarse crushing to provide qualified feed material for the next production process.
- Advantages: The crushed products are finer and more uniform, with low noise and less dust during operation.
Provide Jaw Crusher Suitable for Transition
In addition to the above-mentioned jaw crushers. As a professional jaw crusher company, we also offer jaw crushers suitable for transition, including tracked jaw crusher and wheel-based jaw crusher.
Wheel-based Jaw Crushing Machine
- Capacity: 10 – 60 t/h
- Max Feeding Size: 340mm
- Discharging Size: 20-100mm
- Engine Type: Diesel Engine
- Configuration: Feeding Hopper, Jaw Crusher, Diesel Engine, Mobile Chassis
Track Mounted Jaw Crusher
- Capacity: 20 – 50 t/h
- Max. Feeding size: 380mm
- Discharge size: 20-50mm
- Engine Type: Diesel Engine
- Configuration: Feeding System, Jaw Crusher, Mobile Chassis, Driving System
Both tracked jaw crushers and tyre jaw crushers offer great flexibility and efficient crushing capacity. Which type to choose depends largely on the specific working environment and project requirements. The tracked type is suitable for complex terrain and where stability is important, while the tyre type is suitable for working on flat sites and in environments where rapid movement is required.
What Are Jaw Crusher Used For
The stone jaw crusher for sale can be combined into a crushing plant by matching with feeder, screen and conveyor belt equipment, which is used in mining, sand and gravel aggregate production, construction waste crushing and so on. Here are our jaw crusher combination solutions:
For Aggregate Production and Selling in Indonesia
- Raw Material: Limestone
- Capacity: 200 TPH
- Finished Product(mm): 5-10, 20-25
- Crusher Plant Type: Stationary Crushing Plant
- Configuration: Vibrating Feeder, Jaw Crusher, Impact Crusher, Vibrating Screen, etc.
For Mining In Malaysia
- Capacity: 180 TPH
- Raw Material: Cobblestone
- Finished Product(mm): 10-20, 20-30
- Crusher Plant Type: Crawler-type Mobile Mining Jaw Crusher
- Configuration: Track Jaw Crusher, Screen Plant, etc.
For Road Paving in Honduras
- Capacity: 150 TPH
- Raw Material: River Stone
- Finished Product(mm): 10-20, 20-25
- Type: Wheeled-type Mobile Crushing Plant
- Configuration: Feeder, Jaw Crusher, Screen Machine, PLC Control Box, etc.
A Guide for Choosing Jaw Crushers
By now, you will find that the jaw crusher can operate independently or be combined with other crushing equipment. So when can it operate independently and when is it necessary to be combined? In fact, the decisive factors are your production scale, construction period and the demand for finished products.
Separate Use – Coarse Aggregate Requirements
- Primary crushing of mine gross material (100-300mm) is directly used as road base fill and gross stone masonry material.
- Construction waste recycling coarse crushing, output 50-150mm recycled aggregate for backfill or bedding.
- Simple production line without fine particle size (e.g. rural construction, small quarries).
Combined Use – Crushing Plant
- Requires multi-stage particle size (such as 0-5mm, 5-10mm, 10-20mm): need to be matched with cone crusher, impact crusher or vibrating screen to form a production line.
- Require high cubic grain shape: Jaw Crusher has more needles and flakes, impact crusher or shaper is needed to improve the grain shape.
- Need fine finished products (≤30mm): single-section jaw breakers are difficult to control the fineness stably, and need medium and fine crushing equipment.
Distinguish Between Stationary or Mobile Jaw Crusher Plant
- Tyre/track mobile jaw crusher plant can independently complete the process of ‘feeding – crushing – screening’, foundation-free installation, three-axle chassis, convenient transfer, suitable for demolition sites, temporary works and other short-term projects (within 1 year).
- The stationary jaw crushing plant has a larger capacity (up to 2000 tonnes per hour) and lower long-term operating costs. Suitable for long-term aggregate production lines such as large mines/quarries.
You can choose according to your needs, if you don’t know how to choose, you can also contact us, we have professional technical consultants to help you deep analysis of your needs, for you to customize the most suitable for your project. Then let us continue to understand the basic information of jaw crusher.
What Are the Jaw Crusher Components?
The complete crusher is a precisely co-ordinated working system, core jaw crusher machine parts include:
- Frame: the skeleton of the equipment, which is subjected to huge crushing force, commonly used high-strength steel plate welding or cast steel parts.
- Movable Jaw: the core moving part, equipped with removable movable jaw plate (tooth plate), driven by the eccentric shaft to do complex elliptical trajectory movement.
- Fixed Jaw: fixed in the front of the frame, equipped with removable fixed jaw plate (tooth plate), and the movable jaw plate together constitute the crushing chamber.
- Jaw Plate: The wear-resistant parts that directly contact with the material to be crushed, the shape and tooth shape affect the crushing efficiency and product size, the material is mostly high manganese steel or other wear-resistant alloys.
- Eccentric shaft: the main power transmission shaft, driving the moving jaw movement through the eccentric structure.
- Connecting rod: In some structures (e.g. simple pendulum), it connects the eccentric shaft and the movable jaw (or thrust plate), transferring motion and force.
- Elbow plate (thrust plate): a key safety and adjustment component. The rear elbow plate supports the movable jaw and provides the pivot point for the compound pendulum; the front elbow plate (used for support in some designs) also often doubles as a safety fuse (breaks to protect the main body in case of overload). More critically, varying the number of different thicknesses of rear elbow plate shims is the primary way to adjust the size of the discharge opening.
- Flywheel: Installed at both ends of the main shaft, it uses inertia to store and release kinetic energy, ensuring smooth operation and assisting in overcoming the peak load at the moment of crushing.
- Lubrication system: provide reliable oil lubrication (splash, spray or centralised lubrication) for key friction parts such as main shaft bearings and elbow plate seats.
Working Principle of Jaw Crusher
The working principle of jaw crusher is based on mechanical extrusion crushing, the core of which is the cyclic relative movement of the movable jaw and the fixed jaw, which clamps the material between the two jaw plates and repeatedly applies pressure until it is crushed. It is mainly divided into the following 4 stages:
1. Feeding stage:
The material falls into the crushing chamber (the space formed by the fixed jaw plate and the movable jaw plate) from the inlet at the top with an inclination of 55°. The movable jaw is driven by the eccentric shaft towards the fixed jaw so that the material is held between the two jaws.
2. Extrusion stage:
The motor drives the eccentric shaft to rotate at a high speed (usually 200-300 rpm) through the belt pulley, and the eccentric part of the eccentric shaft pushes the movable jaw to produce reciprocating motion. When the movable jaw is close to the fixed jaw plate, the angle between the two jaw plates exerts a huge composite force of extrusion, splitting and bending on the material.
3. Crushing stage:
When the local pressure > compressive strength of the material when the material is broken. The large pieces of material that do not meet the standard fall back to the bottom of the cavity to be extruded twice.
4. Discharge stage:
When the movable jaw is far away from the fixed jaw plate, the discharge opening at the lower end of the crushing chamber opens. The material which has been crushed to a size smaller than the discharge opening will naturally fall down under the force of gravity and be discharged from the bottom.
Advantages of Jaw Crusher
When you need to process large materials and crush high hardness and corrosive rocks, the jaw crusher will stand out with the following advantages. As a coarse crushing plant, it steadily provides the right feed size for downstream medium and fine crushing plants.
Simple structure and easy maintenance
the mechanical structure is relatively simple, with clear maintenance points and low maintenance cost. Daily work such as replacing jaw plate and adjusting discharge opening is relatively easy to carry out.
Strong processing capacity and wide range of adaptability
it is extremely adaptable to complex materials such as hard, abrasive, mud and water, and is a reliable choice for processing extreme materials. With large feed opening, it can handle large materials.
Low initial investment cost
the purchase cost is usually lower compared with the same processing capacity of cone crusher, impact crusher and other equipment.
Stable and reliable operation
Wide range of discharge opening adjustment
the mechanical adjustment method allows flexible adjustment of the discharge size within a certain range to meet the needs of different stages of crushing.
Common Faults and Solutions of Jaw Crusher Machines
In order to help you reduce downtime, I have listed the following common failure problems and low-cost solutions.
Bearing overheating (<60℃)
80% due to insufficient lubrication or contamination, regular cleaning of bearings + replacement of grease can prevent it.
Product coarsening
caused by wear and tear of the lower part of the jaw plate, adjust the head for use or replace the liner.
Spring breakage
the spring is not relaxed before adjusting the discharge opening, it needs to be checked before starting the operation.
Frame jumping
Andamine, manufacturer of jaw crusher, is a Global 500 strategic partner. Our jaw crusher is widely used in mining, building materials processing and other fields for its simple and efficient extrusion crushing method, rugged construction and wide material adaptability. If you are interested in purchasing a jaw crusher, please feel free to contact us and we will offer you a satisfactory jaw crusher machine price.