China Mg300 Longwall Shearer for Manufacturer

MG300 Longwall Coal Shearer for Manufacturer
Product Introduction
The electric driven is driven by multi-electric motor and AC variable fre-quency speed controlled,applied to the thick or middle thick fully-machanized workface with the medium stable roof and less fluctuation floor to cut the hard or medium hard seam with rock .150-200m long is preferable.Chief structure characteristic.
Straight cutting arms,and the left and the right are eschangeable,the driven parts on the left an the right are ex-actly same and symmetrical.Cutting motor is set on cutting arm transversely,without power transmission between cutting arm and shearer body.
Powerful cutting drum with pick tine.
The electrical system can be 4-quadrant run ,can be applied to the big obliquity,the haulage system is one driv-ing one mode.
Computer centralized control,PLC Chinese character display system with the functions such as protection, op-eration,and default display.
Applying water-cooled inverters that is reliable,small size.Good low frequency starting ability,big haulage,con-stant power variable speed control can be realized.
Technical Parameters

TypeMG400(500)/930(1130)-WDMG300/700-WDMining height (mm)2000~40001800-3920Mining depth(mm)800630Tilt angle of seam(°)≤35°≤35°Drum diameter(mm)Φ2000Φ1800Drum speed(r/min)2836Length of cutting arm(mm)27002600Slewing center distance of cutting arm(mm)76107380Total power(kW)2x400(500)+2x55+202x300+2x40+20Voltage(V)33001140Haulage force(kN)450~680322-534Haulage speed(m/s)0~8.3~13.80~7.7~12.8Machine body height(mm)16751571Dinting depth(mm)324316Weight(t)6860Dust SuppressionInner and outer sprayInner and outer sprayCable collectionAutomaticallyAutomatically

Product Introduction
The roadheaders are advanced, self-propelled, extremely powerful rock-cutting machines designed to excavate roadways, tunnels and chambers continuously without using explosives. Powered electro-hydraulically, they are used extensively in coal mining, mineral mining and underground construction projects, where their ability to excavate the desired profile without causing harmful vibrations is highly valued for both environmental and safety reasons.
Main CharacteristicsCompact structure , body is low , with a low center of of gravity , easy to operate , and operate steadily. 2. Cutting head size can be 700x550 or 750x550mm , it has good cutting speed when cut medium hard coal rock. Cutting pick are reasonable arrangement , strong ability of cutting , posses spray both inside and outside , good dust-proof effect .The roller shearer is used for mechanized coal mining in longwall coal face, and can also be used for mining other minerals such as potash or shale.At present, the cutting height of the drum shearer is 0.65~5.0m, which can cut down various cutting impedance coal seams .