Jaw Crusher

Jaw Crusher is mainly used to crush various mineral stones and bulk materials to medium size and its compressive strength is no more than 320MPa. There are two types: coarse crushing and fine crushing. The PE jaw crusher has a complete range of specifications, the feeding size is between 150mm and 1020mm. It is the ideal equipment for primary crushing. Jaw crusher is widely used in mine, metallurgy, the building, road and railroad construction, hydraulic construction, chemical industry, fire-proofing material and ceramics.

Features

1. because of the deep crushing chamber, the capacity is improved;
2. it has large crushing ration and uniform end product size;
3. the reliable and convenient discharge adjusting device and the large adjusting range make the equipment more flexible;
4. reliable lube system, easy replacement and easy maintenance;
5. simple structure, reliable working condition and low operation cost;
6. the energy saved equipment: single machine can save 15%~30% energy and the whole system can save energy more than doubled;
7. the large range of the discharge opening can meet the different requirements;
8. low noise, less dust;

Working Principle

The main structure of jaw crusher is crusher frame, eccentric shaft, driven wheel, movable jaw, side guard plate, toggle plate, draw rod, spring, fixed jaw plate and movable jaw plate ect. Toggle plate is used to protect the crusher from damages.

The motor transmits power through belt, drives the moving jaw to do periodic motion towards the fixed jaw by the eccentric shaft. The angle between toggle plate and moving jaw plate increases when moving jaw moves. So the moving jaw moves towards the fixed jaw. The stuff will be crushed in this process. The angle between toggle plate and moving jaw decreases when moving jaw moves down, the moving jaw moves leaves fixed jaw by pulling rod and spring, the final crushed stuff will be discharged from the outlet.

Technical Data

Model	Size of feed opening (mm×mm)	Input size (mm)	Output size (mm)	Capacity (t/h)	Motor power (kw)	Eccentric shaft rotate speed (r/min)	Weight (t)
PE-250400	250*400	210	20-60	5-20	15	300	2.8
PE-400600	400*600	340	40-100	16-65	30	275	6.5
PE-500750	500*750	425	50-100	45-100	55	275	11.8
PE-600900	600*900	500	65-160	50-120	75	250	17.6
PE-7501060	750*1060	630	80-140	52-180	90	250	28
PE-8001060	800*1060	650	100-200	85-143	110	250	30
PE-8701060	870*1060	670	200-260	181-210	110	250	30.5
PE-9001200	900*1200	750	95-165	140-260	110	200	50
PE-10001200	1000*1200	850	195-265	160-300	110	200	51
PE-12001500	1200*1500	1020	150-300	300-600	110	180	100.9
PEX-250750	250*750	210	25-60	8-22	22	330	5.8
PEX-2501000	250*1000	210	25-60	16-52	30-37	330	7.1
PEX-2501200	250*1200	210	25-60	20-60	37-45	330	8.2
PEX-3001300	300*1300	250	20-90	20-90	75	330	12.6

Overall Dimension

Model	site(mm)
	A	B	C	D	E	F	G	H	I	J	K	L	M
PE-250×400	250	400	1450	750	890	735	1296	1450	554	1126	1315	740	812
PE-400×600	400	600	1565	955	1105	990	1586	1565	636	1421	1732	1080	962
PE-500×750	500	750	2365	1440	1270	1185	2062	1890	820	1622	1911	1137	1200
PE-600×900	600	900	2563	1640	1540	1505	2340	2145	960	1633	1877	1380	1515
PE-750×1060	750	1060	2733	1900	2010	1800	2860	2530	1060	2098	2410	1730	1660
PE-800×1060	800	1060	2450	1850	1970	1980	2800	2450	1060	2168	2556	1730	1660
PE-870×1060	870	1060	2660	2060	1970	1840	2800	2660	1060	2168	2556	1730	1660
PE-900×1200	900	1200	3558	2280	2125	2175	3268	3558	1280	2388	2875	1870	1800
PE-1000×1200	1000	1200	3558	2280	2125	2175	3268	3790	1280	2388	2875	1870	1800
PE-1200×1500	1200	1500	4200	2940	2700	3480	3843	4200	1620	2756	3732	2060	2285
PEX-250×750	250	750	1545	855	930	850	1330	1545	770	1458	1667	1080	800
PEX-250×1000	250	1000	1530	905	930	850	1380	1530	1010	1746	1992	1350	900
PEX-250×1200	250	1200	1900	965	930	850	1430	1900	1220	1946	2192	1550	1000
PEX-300×1300	300	1300	1750	1170	1100	930	1724	1750	1320	2080	2320	1650	1228

Production Process

1.Jaw Crusher is mainly composed by the following parts: the fixed body, the rotator, the protecting device, the adjusting device.The fixed body: the main components of fixed body are frame which is processed by two ways: casting and welding. Welding the frame means that some reinforcement ribs are added on the basic of the original casting frame and it can reach the same using effect of the casting frame. In order to prevent the side wall of the frame from wearing heavily, the guard plates, easily replaced, are added on the left and right sides of the crushing chamber.

2.The rotate body: it’s mainly composed by moveable jaw, eccentric shaft, bearing, flywheel and so on. These are the main parts to transmission and tolerance.

• 2.1 The moveable jaw is composed by movable jaw bracket and movable jaw plate. And the movable jaw bracket is made by 35# casting steel after quenching.
• 2.2 The eccentric shaft is made by 45# steel after quenching.
• 2.3 The bearing is made by double row radial spherical roller bearings which have some features such as fine adjustment, large tolerance.
• 2.4 The jaw plate has two kinds: movable jaw plate and fixed jaw plate. In order to improve the crushing capacity, the surface of the jaw plate uses the tooth shape and the material is ZGMn13.

3.The adjusting device: it’s used to adjust the discharge opening size and control the output size.

(1)Operation Notes

1. Examine the lube condition of the bearing to ensure it’s good and make sure that there is enough grease in the junction of the bearing bracket.
2. Check all fastener to ensure that they are fully tighten.
3. The protecting device should be good and upon found the unsafe phenomenon operator should resolute it.
4. Check whether there are ores or other debris in the crushing cavity and operator should resolute it upon found the ore.

(2) The starting of Jaw Crusher

1. Before starting the machine, please ensure that the machine and the transmission part are good.
2. The machine can be only started in no load condition.
3. After starting the machine, upon found the abnormal condition, the operator should stop the machine and find the reason then solve the problem.

(3) The maintenance and the use

1. Feed the ore after the machine is working normally.
2. The ore should be feed uniformly and it had better avoid the side feeding.
3. The temperature of the bearing shouldn’t rise 30℃ and should be kept within 70℃, if not, should find the reason and solve it.
4. Before stopping the machine, the operator should stop the feeder and the ore should be discharged totally.
5. When working, the machine stops caused by the blocking materials and now should shut off the motor. After the blocking materials are discharged, the machine can be started again.
6. One end of the jaw plate swear, the other end can be used.

(4) The lube system of Jaw Crusher

1. Keep a good lube condition of the friction surface to ensure the machine work normally and extend the use life.
2. In normal the machine use the grease as the lubrication and according to the using location and the temperature, the calcium based grease, the sodium based grease or the calcium and sodium based grease can be choosen.
3. The grease should be the 40-70% of the bearing housings and should be changed every three months. And when changing, the bearing and the bearing housings should be cleaned by the clean gas.
4. The connector of the toggle plate and the toggle plate gasket should add the grease before starting the machine.

The Maintenance

1. To ensure the machine work normally, the right operating ways and the routine maintenance are necessary. Generally there are there kinds of maintenance:Light maintenance: it mainly includes the following items: examine and repair the adjusting device, adjust the discharge opening, change the wear parts, examine the transmission part and lube system. The period of the light maintenance is about 1-3 months.
2. Medium maintenance: except the working of the light maintenance, it also includes changing the toggle plate and examining and repairing the bearing bushing ect. The period of the medium maintenance is about 1-2 years.
3. Heavy maintenance: except the working of the medium maintenance, it also includes the following items: change the eccentric shaft, cast the Babbitt, change the wear part. The period is about 5 years.