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Stone Crushing Machine

The company's main products are HGM series micro pulverizer, superfine micro pulverizer, micro pulverizer, superfine pulverizer, pulverizer and matching hammer crusher, etc.

Jaw Crusher

Input Size: less than 250 mm
Output Size: 10-100 mm
Capacity: 1-90 t/h
 

Applicable materials: River pebble, granite, basalt, iron ore, limestone, quartzite, coal gangue, construction waste, etc.

Product features: ●High crushing ratio, uniform particle size ●Simple structure, reliable performance ●Easy operation and maintenance

Jaw crusher is a widely used coarse crusher, which can crush all materials below 1500mm. It can be said to be a necessary equipment for sand and gravel plants. The output of the small jaw crusher can meet the needs of most users, and it is very popular because of its high cost performance.

Jaw crusher is mainly used in the industries of metallurgy, mining, chemical, cement, construction, refractory materials and ceramics, suitable to crush hard and soft ores with compressive strength less than 320 MPa. This machine can crush material s into medium size and fine size.

jaw crusher application

Jaw Crusher Features:


●High crushing ratio, uniform particle size
●Simple structure, reliable performance
●Easy operation and maintenance


 

Working Principle


The movable jaw goes upward and downward through eccentric shaft when belt and belt wheel are driven by the motor. The angle between movable jaw and bracket turns big when the movable jaw goes upward, which pushes the movable jaw plate to come closely to fixed jaw plate. At the same time, materials are crushed with the movement of the movable jaw. When the movable jaw goes downward, the angle between movable jaw and bracket turns small.

Under the force of spring and connecting bars, the movable jaw plate leaves fixed jaw plate, and the crushed materials with qualfied size are discharged from the crushing cavity. With the continuous rotation of the motor, the movable jaw crushes and discharges materials, which, in turn, realizes the goal of mass production.

Jaw crusher working principle

 

Product Specifications

 

Type FeedOpening Szie(mm)        Feeding Size (mm) Output
Open Range
(mm)
Capacity (t/h) Powder
(kw)
     Dimension 
L * W * H 
(mm)
PE150*250 150X250 125 10-40 1-5 5.5-7.5 922* 745*933
PE200*300 200X300 125 15-30 2-10 7.5 935*750*990
PE200*350 200X350 125 15-40 5-16 7.5-11 1056*1142*1220
PE250*400 250x400 210 20-60 5-20 15-18.5 1430*1310*1340
PE400*600 400X600 350 40-100 15-60 30-37 1700*1732*1653
PE500*750 500X750 425 50-100 40-100 45-55 2035*1921*2000
PE600*900 600*750 465 60-140 50-120 50-65 2150*1988*2105
PE600*900 600X900 480 65-160 60-140 55-75 2290*2206*2370
PE700*1060 750*1060 550 75-200 75-160 60-85 4180*2560*3070
PE1000*1200 1000*1200 850 195-265 315-500 110 3480*2876*3330
PEX150*750 150*750 120 18-48 8-25 7.5-75 1200*1530*1060
PEX250*400 250*400 210 ≤12 5-10 15-18.5 1430*1310*1340
PEX250*1000 250*1000 210 25-60 16-50 30-37 1530*1992*1380
PEX250*1200 250*1200 210 25-60 20-60 37-45 2192*1605*1415
PEX300*1300 300*1300 250 25-105 20-90 75 2720*1950*1600

Note: This specification is just referencing, any changes are subject to the products.
 

jaw crusher

Jaw Crusher Crushing Plants

jaw crusher crushing plant

Jaw Crusher Q&A

 

How to adjust the discharging particle size of the jaw crusher?

The working mode of the jaw crusher is a curved extrusion type. The belt and pulley are driven by the motor, and the movable jaw is moved up and down through the eccentric shaft. The material is crushed or split to achieve the purpose of crushing and discharging. The size of the discharge opening of the jaw crusher refers to the shortest distance between the tooth peak of one jaw plate and the tooth valley of the other jaw plate when the movable jaw plate is closest to the fixed jaw plate at the bottom of the jaw crusher. Generally speaking, the discharge opening of each type of jaw crusher can be adjusted within a certain range. The commonly used methods to adjust the discharge thickness are as follows:
 
1. Gasket adjustment

Open the adjusting seat with jacking bolts, check the quality of the rear thrust plate support and the rear wall of the frame, put in or remove a set of gaskets of equal thickness, increase or decrease the number of gasket layers to make the crusher discharge The feed opening decreases or increases. This kind of adjusting device has a simple and compact structure, and the weight of the whole machine does not increase much, so it is more commonly used.

2. Hydraulic adjustment

The rear thrust plate is used as the safety device of the crusher. Generally, the jaw crusher adopts a hydraulic safety device, which can automatically adjust the size of the discharge port, which is reliable and safe, and easy to remove faults.

3. Use inclined iron to assist adjustment

The transmission device can be used to raise and lower the rear inclined iron and move the front inclined iron horizontally. When the rear inclined iron is lifted or lowered, the size of the discharge opening can be adjusted accordingly. This kind of adjustment device can realize stepless adjustment. No need to stop.

4. Electronically controlled adjustment mechanism

The electronically controlled adjustment mechanism can quickly and effectively realize the adjustment and detection of the jaw crusher, and the control of the particle size series is very accurate, avoiding repeated operations, and providing a very limited degree of discrimination and accuracy.

5. Adjustment of supporting device

In the bearing part of the jaw crusher, a sliding bearing made of babbitt alloy is used, which can withstand larger impact loads and is relatively wear-resistant, but the conversion efficiency is low, and forced lubrication is required.

The more commonly used methods of adjusting the thickness of the above five types of jaw crushers can improve the maneuverability of the jaw crusher and effectively reduce the resource consumption of the screening operation. However, the jaw crusher is also divided into small and large, and the adjustment methods are also different. Large jaw crushers generally use hydraulic adjustment methods, and small jaw crushers generally use gasket adjustment or support device adjustment.

jaw crusher
 

What models of small jaw crushers are available?

Small jaw crushers generally refer to jaw crushers with an output of 1-400 tons. They are small in size, cheaper in price, and convenient in later maintenance. They are more popular in small sand and gravel plants. In addition, the economic situation is unstable. Many customers don't dare to invest rashly, so the sales of small jaw breaking machines are even better. The commonly used models of SBM's small jaw breaking machine are PE-400×600 (46 jaw crusher), PE-500×750 (57 jaw crusher), PE-700×1060, etc.
 

How to maintain the jaw crusher?

1. Regularly check the wear of parts and components, and timely maintain the loosening of bolts and connectors.

2. Regularly replace the lubricating oil and clean the lubricating filter to ensure the normal operation of the lubricating components. At the same time, check whether there are oil or water leakage in the two major systems of lubrication and water cooling. Once found, stop the machine for inspection and treatment in time, and wait until the problem is solved. restart.

3. To monitor the bearing temperature in real time, a thermometer can be installed to keep the temperature within 60°C.
 

What should be paid attention to when replacing jaw crusher wearing parts?

 
In the jaw crusher, the liner, thrust plate and eccentric shaft are the main accessories.

1. Replacement of liner
The fixed jaw lining plate (tooth plate), movable jaw lining plate (tooth plate), and both side lining plates (guard plate) of the jaw crusher are easy to wear. If the wear is serious, the mechanical particle size will increase. When the lining plate is initially worn, the U-turn the liner or use the upper and lower linings. The wear of the jaws is mostly concentrated in the middle bottom. When the tooth plate is worn away by 3/5, the liner that needs to be replaced, when the liner on both sides is worn down by 2/5 , Also need to be replaced.

2. Replacement of mandrel, eccentric shaft and bearing bush
If there is not much shaft wear, and you just want to repair the geometry, you can turn it on a lathe, but when the journal size is reduced by 5% from the initial through several turnings, turning is not allowed and should be replaced.

Because the jaw breaker works under impact load, the babbitt lining on the bearing bush needs to be cast again every two years.

If the eccentric shaft and the bearing bush, the mandrel and the bearing bush are worn, and the space exceeds 1.5 times of the original installation and matching space, it needs to be adjusted or replaced; the oil groove is worn 1.5 mm, the oil groove should be reopened and adjusted; on the connecting rod head When the space between the cover and the eccentric shaft is worn out to 1.5 times the installation space, it is also necessary to add pads for adjustment or replacement.

3. Replacement of thrust plate
When the thrust plate is severely worn or the front thrust plate is broken, the rock in the crushing cavity must be cleaned first, the severely worn or broken thrust plate is taken out, the movable jaw and the toggle plate on the connecting rod are inspected, and then the movable jaw is pulled. When approaching the fixed jaw, lubricate the working surface of the toggle plate with dry oil, then replace it with a new thrust plate, make it slowly contact the working surface of the toggle plate, and tighten the lever to make the movable jaw clamp the thrust plate and tighten it. Install the cover, connect the lubrication system, and then adjust the size of the discharge port.

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