Mining machinery and equipment is a large mechanical equipment dedicated to mining, transmission and transportation in coal mines, including mining machines, conveyors, tunneling equipment, underground auxiliary transportation, vehicle equipment, mine winch, ventilation and dust removal equipment, coal washing equipment, cranes, special vehicles and so on.

 Mine  mountain  Mechanical equipment in production has the following characteristics: 

1.   The working environment is harsh, and the equipment is always surrounded by dust, water vapor and harmful gases;

2.   The working conditions are harsh, most of the mechanical equipment is in high speed, heavy load, vibration, impact, friction and medium corrosion working conditions;

3.   Long running time, most of the mechanical equipment day and night, years of continuous operation;

4.   Poor lubrication conditions, due to the harsh environment, harsh working conditions, coupled with short downtime, which makes the mechanical parts are not well lubricated and maintained.

Therefore, the annual economic loss is surprisingly large, only by choosing the correct bearing, regular maintenance, timely maintenance, improve the quality of maintenance, to ensure that all production equipment in a good state of operation, is to reduce the wear of coal mining machinery, extend its service life, to achieve high yield, efficient and safe production of coal effective measures. Mining operators can ensure high productivity and achieve the expected service life of the equipment.