The characteristics of the mine equipment is: underground mining and open pit mines are usually points two types.
1. Due to limited space, mine requirements of mining machinery is compact, small volume, thus bearing and gear under great pressure and load;
2. Mining machinery to facilitate often mobile, working conditions and changeful, large load change.
3. Mining machinery more heavy load, medium or low speed transmission, generally require frequent starting, and often bear impact load;
4. Mining conditions, moisture, ash, coal dust and gas (main component is methane), some mines and the harmful gas of sulfur, sulfur dioxide, hydrogen sulphide, so many mining machinery, have fire prevention, explosion-proof, anti-corrosion problems;
5. Open-air mining machinery need to be able to withstand the wind, sun, rain and hot summer and cold winter climate change;
6. Due to the space is narrow, mine machine maintenance more difficult ground, therefore requires durable, mining machinery to facilitate maintenance.