After reaching a certain lifespan, cam cutters may experience wear on certain components, much like how people may fall ill as they age. If the roller needle bearing of a cam cutter is damaged, the following measures can be taken:
Loosen the output sleeve, remove the output shaft, and do not loosen the rear cover after it is removed. This ensures that the shaft's axial position remains unchanged upon reassembly.
   2. Replace the damaged needle roller bearings and ensure the use of qualified needle roller bearings.
   3. Loosen the lock nut at the rear end of the output shaft and the output sleeve at the front, and you can remove the output shaft along with the sleeve. When reinstalling, simply tighten the lock nut to return the output shaft to its original position.

Above is a brief introduction on what to do when the roller needle bearing of a camshaft splitter is damaged; for more details, please consult the technical staff at Kunshan Dongzhihao.