MJ Jaw Crusher

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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
CSS（mm）	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.