The planetary gear shaft can withstand wear and fatigue in long-term use, mainly due to its carefully designed and used high-strength materials. Due to the parallel meshing of multiple gears in the planetary gear system to share the load, the planetary gear shaft has a more uniform distribution of load and pressure compared to traditional single gear shafts. This uniform load distribution significantly reduces the workload of each gear, thereby reducing the risk of damage to a single gear due to excessive wear or fatigue.
Planetary gear shafts are usually made of high-strength alloy steel or special wear-resistant steel, which have excellent wear resistance and fatigue strength. In order to improve its durability, planetary gear shafts often undergo processes such as heat treatment, surface hardening, or coating treatment to further enhance their ability to resist wear and corrosion. After these treatments, the surface of the gear shaft becomes harder and can effectively resist wear from components such as gear meshing and bearing friction. At the same time, these strengthening measures also enhance the fatigue resistance of the gear shaft, ensuring that it can withstand long-term, high-intensity working pressure and avoid fatigue fracture.
In addition, due to the design structure of the planetary gear shaft, multiple gears share the load, which not only disperses the impact force during operation, but also reduces the pressure peak at the contact point between the bearing and the gear, thereby reducing the occurrence of wear. The high efficiency and uniform load distribution of planetary gear systems enable them to maintain low wear rates and high operational stability during long-term operation.