1. Wear and tear: Reason one is the wear and tear of components and equipment that come into contact with copper mesh, woolen cloth, pulp, and formed paper for a long time, such as pulp pumps, pulp crushers, desanders, vacuum box panels, press rollers, calendering rollers, etc; Reason 2: Parts that move relatively frequently between components, such as scrapers, inlet heads, cylinders, vacuum rollers, vacuum pumps, etc.

　　2. Lubrication: Mechanical rotation cannot be separated from bearings. Paper machines, mainly composed of rotating rollers, have a wide variety of types and quantities of rollers, with hundreds of different types of bearings. Therefore, lubrication management work is very important, especially affected by water, high temperature, and heavy loads. Lubricating oil (grease) is prone to loss, evaporation, and aging, which can damage the lubrication effect, cause bearing damage, and shaft head wear. Therefore, regular inspections and refueling are essential.

　　3. Fatigue: Heavy load and continuous operation of machinery are prone to fatigue failure. On paper machines, due to the constraints of mechanical structure and operating principles in certain parts, the design strength of components (such as mesh table shaking spring plate, electromagnetic clutch suction cup, coupling overload prevention pin, etc.) should not be too large to avoid damage. The solution can be taken through measures such as maintenance and technological improvements.