The wear and life of the gear are related to the following factors: working load: The greater the load the gear is subjected to when transmitting power, the faster its wear rate and the relatively short life. Running speed: Gear running at high speed is prone to wear due to friction, inertia and other problems, and its life will be correspondingly reduced. Cycle times: Every time the gear goes through a cycle, there will be wear. The more cycles, the more wear accumulates, and the life is relatively short. Use environment: Gear in harsh working environment, such as high temperature, humidity, corrosive media and other conditions, vulnerable to damage and corrosion, life will be affected. Lubrication conditions: Good lubrication can reduce friction between gears, reduce wear and fatigue damage, and extend service life. Gear material and hardness: Choosing the right gear material and the right hardness can improve the wear resistance and life of the gear. Manufacturing quality: High-quality manufacturing processes and accurate dimensional control provide better tooth profile contact, reduce wear, and extend life. All in all, gear wear and life are closely related to factors such as working load, operating speed, number of cycles, use environment, lubrication conditions, gear material and hardness, and manufacturing quality. In order to ensure the normal operation of the gear and extend the life of the gear, we should pay attention to the selection of appropriate gear materials, optimize the lubrication conditions, control the workload, and regularly check and maintain the working state of the gear.