The main factors that affect the bearing capacity of the roller are the cylinder, shaft, and bearings, and are determined by the weakest of them:
1. Exceeding the limit of bearing capacity can cause excessive deformation of the cylinder during use, resulting in unstable transportation;
2. Insufficient rigidity of the shaft can cause changes in the stress state of the bearing, affecting its performance;
3. If the load exceeds the safe allowable value of the bearing, it will greatly reduce its service life.