1. Wear and tear: the first reason is the parts and equipment damaged by contact with copper mesh and woolen cloth forming paper, such as spring loading, vegetable crusher, desander, vacuum box surface wrench, bar pressing and calendering. The second reason is the relatively frequent movement between parts, such as scraper, steam inlet head, air siphon, vacuum couch roll, vacuum recorder, etc.

2. Lubrication: the machine can't do without bearings. The paper machine, which is mainly composed of feed rollers, has many types and quantities of rollers, and there are hundreds of bearings of various models. Therefore, lubrication management is very important, especially for the paper machine Due to the influence of water, high temperature and heavy load, the lubricating oil (grease) is easy to lose, evaporate and age, which will damage the lubricating effect and cause damage. Therefore, it is essential to check and refuel regularly.

3. Fatigue: heavy load and continuous operation of the machine prone to fatigue, in the paper machine, due to the constraints of some parts by the mechanism and operation principle, the design strength of parts (such as vibration spring plate, electromagnetic clutch suction cup, coupling overload pin, etc.) can not be too large, in order to avoid damage and other solutions, we can take measures such as maintenance and technical transformation.