The maintenance of the equipment is an extremely important and frequent work. It should be closely coordinated with the extreme operation and maintenance, There should be set up a full-time personnel to conduct on-duty inspections.Bearings undertake the all loading duty of the whole equipment, thus a good lubrication has a great effects with the service life of bearing .It is directly affection the using life and operation effectiveness of equipment. Therefore, the filled lubrication oil must be clean and good sealing. Keep clean at the mainly filling lubrication points, rotating bearing, roller bearing and all sprockets. The movable bearing and sliding surface, must pay attention to these parts are wroking normal or not . Pay attention to the extent of worn out of the wearing parts.