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MJ Jaw Crusher

MJ Jaw Crusher

MJ jaw crushers are of single-elbow compound swing type and heavy-duty design, using symmetric deep crushing chamber, big feed opening and optimized meshing angle to achieve high operation rate, large crushing ratio and high productivity. Wi

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MJ Jaw Crusher
 


 
MJ jaw crushers are of single-elbow compound swing type and heavy-duty design, using symmetric deep crushing chamber, big feed opening and optimized meshing angle to achieve high operation rate, large crushing ratio and high productivity. With crusher long service life, low wearing, easy for maintenance and operation, hydraulic or mechanical adjustment of the discharge mechanism is simple and reliable.

 
Optimized structure:high strength,light weight,simple structrure and strong
 

 
MJ series of jaw crushers make full use of CAD and analysis methods of finite element to optimize the crusher.
structure based on long-term experience accumulation. The machine's design emphasizes reducing the equip-
 
ment weight while ensuring and increasing the strength, increasing reliability, safety and economy. Both fixed and moving jaw plates are box-shaped castings with rippled plate, with the light weight and high strength and stiffness, equipped with a double-sealed sealing lubrication system, which can be safe and reliable;
All welds are avoided from the stress concentration zone, changing the curvature of the component in the stress concentration zone is adopted to increase the strength
 


 
Square large feeding,symmetrical deep cavity without dead zone crushing chamber
To improve feeding capacity

 
MJ series of jaw crushers are equipped with a nearly square large feed opening, deep cavity and with design
 
of non-dead zone crushing chamber, which can improve the feeding capacity and output.
 
The top of the moving jaw is equipped with a replaceable thick protection shield for the moving jaw to under- take the feeding impact.
There is no need to install a block plate above the moving jaw of feed opening, and the bulk minerals entering the crusher can fall directly into the movement area of the crushing chamber.
The traditional jaw crushers are adopted with asymmetric crushing chamber design with an effective feeding size smaller than the rated opening. The series of crushers are adopted with symmetrical crushing chamber design, so that the actual opening is equal to the rated opening, which improves the feeding capacity.
 

 
Model MJ4090 MJ4120 MJ6120 MJ6130 MJ6150 MJ8150
Feeding  Size 895×660 1200×830 1200×1100 1300×1130 1500×1070 1500×1300
L(m) 2.55 3.23 3.61 3.76 4.11 4.50
W(m) 1.88 2.57 2.35 2.47 3.00 2.90
H(m) 2.38 2.95 3.51 3.85 3.33 4.19
D(m) 1.60 1.86 1.86 2.17 1.76 2.17
F(m) 1.58 1.93 2.50 2.68 2.39 3.05
Shipping volume(m³) 13 23 32 38 48 58
(CSS)Range 50-175 75-275 125-275 125-300 125-300 150-300
Weight(kg) 13200 27000 34500 41500 53000 63500
Motor Power(kw) 75 132 160 160 200 200
Capacity(t/h) 85-320 240 305-800 330-965 385-1090 480-1155

CSS(mm)  Model
MJ4090 MJ4120 MJ6120 MJ6130 MJ6150 MJ8150
40            
50 85-115          
75 95-155 160-220        
100 120-195 220-295        
125 145-230 270-350 3295-390 330-435 385-495  
150 170-270 320-435 355-460 385-500 440-595 480-620
175 195-315 390-510 400-525 445-570 505-670 540-705
200   440-575 450-590 490-645 575-745 615-805
225   490-645 505-665 550-735 635-820 670-880
250   555-725 555-730 605-805 705-925 745-980
275   605-795 605-800 660-880 770-1005 825-1060
300       720-965 820-1080 880-1155

 

The capacity shown in the table only indicates an approximation of the capacity of the crusher. The corresponding condi- tions are open-circuit crushing, dry blasting granite with a bulk density of 1600 kg/m3, the maximum size of which can meet the maximum feed size allowed by the crusher. The lower values in the table apply to the circumstance where the fines of the feeding less than the size of the discharge are rejected, and the higher values apply to the circumstance with contents of fines. The CSS that the crusher can operate normally depends on the feeding granularity distribution, the friability of the material (Wi), the amount of feeding contaminants, the type of jaw plates installed, and the type of its material used.

 

 

The Characteristic Curve of Discharge Granularity This curve is a typical granularity characteristic curve of medium crushable rock (Crush- ing Work Index Wi=16). About 75% of the products are less than the CSS. The shape and product of the Granularity Curve is less than the ratio of the CSS, depending on the characteristics of the minerals. For rocks with different friability (Wi between 20-12), normally about 65%-85% of the crushed product is less than the crusher CSS.