​How to effectively maintain a planetary gearbox

1.What is a planetary gearbox
A planetary gearbox, also known as a planetary reduction gearbox or gearbox, is a mechanism that rotates around a sun gear through multiple planetary gears, mainly used to reduce the transmission speed ratio and increase the torque of the motor. Its structure includes components such as a planetary ring gear, a sun gear, a planetary gear, and a gear axle.
PX86 行星齿轮减速机,适用于 Nema 34 步进电机/伺服电机
2.Working principle of a planetary gearbox
The working principle of a planetary gearbox is based on a planetary gear mechanism, which achieves the effect of speed reduction and torque increase by rotating the planetary gear around the sun gear. The planetary gear transmission can achieve the disengagement, same-direction or reverse transmission of the input shaft and the output shaft, and change the transmission ratio according to the motion relationship between the ring gear, sun gear, and planetary gear.

3.Main functions of a planetary gearbox
‌1.High-precision control‌: The planetary gearbox ensures high-precision output capacity through its precise planetary gear layout. This high-precision feature is crucial when industrial robots perform delicate operations such as precise grasping or positioning, enabling the robot to complete various tasks accurately and without error.
‌2.Strong load support‌: The planetary gearbox has excellent load-bearing capacity and can cope with high-torque and heavy-load operating environments. In the field of industrial robots, this means that it can handle various scenarios with high loads and complex motion requirements, ensuring the stability and reliability of the robot when performing tasks.
‌3.Compact structural design: The planetary gearbox has a compact structure, small size and light weight, which provides valuable space advantages for industrial robot design. Under the condition of limited internal space of the robot, the compact reduction gearbox design can better integrate into the robot structure, while reducing the overall weight and improving the robot's movement efficiency and flexibility.
‌4.Smooth running characteristics: Planetary gearboxes are known for their smooth operation and low noise characteristics, thanks to their balanced planetary gear structure and optimized lubrication system. In industrial robot applications, smooth operation helps reduce vibration and noise, improve the stability and reliability of the robot, and is especially important for robots that require long-term operation and high-precision control.
TQEG 系列行星齿轮箱 20:1 齿隙 20 弧分,适用于 10 毫米轴 Nema 23 步进电机 BLDC 电机和伺服电机
4.Maintenance methods of planetary gearboxes
‌1.Regularly check the oil and replace the lubricant: Regularly check the oil of the planetary gearbox to ensure that the oil is sufficient and clean. It is recommended to replace the oil every six months to ensure the normal operation of the equipment. When replacing the lubricant, it should be carried out at operating temperature and ensure that the remaining dirty oil is removed.
‌2.Check the gears and bearings‌: Check the gears and bearings of the planetary gearbox regularly to ensure their normal operation and avoid problems such as wear and cracks. Tighten loose parts in time to prevent loose parts from aggravating wear or causing parts loss.
‌3.Check the seals‌: Check the seals of the planetary gearbox regularly to ensure that they are well sealed to avoid oil leakage. Replace damaged seals in time to prevent oil leakage and impurity intrusion.
‌4.Control the workload and environment‌: Avoid overload and long-term high-speed operation to avoid damage to the planetary gearbox. Avoid using the planetary gearbox in an environment with too high or too low temperature to avoid affecting its normal operation.
‌5.Selection and maintenance of lubricating oil‌: Select the appropriate lubricant according to the load, speed, temperature and other working conditions. Use high-viscosity oil for heavy load and high temperature, and low-viscosity oil for light load and high speed. Control the amount of oil well, too much or too little will affect the lubrication effect. Replace the lubricating oil and filter regularly to prevent impurities from aggravating wear.
‌6.Keep clean and prevent impurities‌: Clean the gears and gearbox regularly to prevent dust and debris from accumulating. Make sure the lubrication system is free of impurities before adding lubricant to prevent impurities from aggravating wear‌.
‌7.Monitor oil quality and record maintenance history‌: Regularly sample and test the viscosity, acid value and other indicators of the lubricating oil, and adjust the lubrication plan based on the results. Record the refueling time, oil volume, oil brand and model, and the operation of the equipment to provide a reference for maintenance‌.
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