There are many reasons for camshaft axial wear.

1. Due to poor lubrication, due to the poor lubrication of the camshaft, radial wear is first caused, and then the radial runout is large, and finally axial wear is caused.

2. The matching clearance of each relevant moving parts is too large, which leads to large axial and radial movements during the movement, causing abnormal wear. It is recommended to carefully measure whether the fit clearance of each relevant moving part is normal.

3. Whether the camshaft manufacturing materials and processes are normal, if the manufacturing materials and processes are unreasonable, it will also cause stress concentration and cause abnormal wear.

4. Whether the bearing quality is qualified, poor bearing quality will also cause axial and radial movement, resulting in wear.