1.Insufficient lubrication: If the cylinder is short of oil or the lubricating oil used deteriorates, it will lead to poor lubrication between the piston and the cylinder wall, resulting in fluffing.

2.Foreign body intrusion: If the installation process is not thoroughly cleaned or impurities enter the cylinder during operation, these hard particles will exacerbate the wear of the cylinder wall, which will cause fluffing.

3.Piston ring failure: If the piston ring is broken or severely worn, it will increase the friction with the cylinder wall, which in turn will cause fluffing.

4.Overheating Problems: Cylinder brushing can cause the cylinder to overheat, which requires repairs to the cylinder and pistons.

5.Cooling system failure: Insufficient cooling water or blocked cooling channels can increase the temperature of the cylinder, which can cause hair pulling.

6.Improper piston ring buckle clearance: Too small piston ring lap clearance may lead to uneven heating of the cylinder, which in turn can lead to hair pulling.

In view of the problem of cylinder brushing, corresponding repair and maintenance measures should be taken according to the specific reasons, such as cleaning the cylinder, replacing the worn piston rings, ensuring sufficient lubricating oil, checking and maintaining the cooling system, etc., to restore the normal working condition of the cylinder.