5 ways to judge the failure of planetary gear reducers

Planetary gear reducers are common mechanical equipment. In industrial production and mechanical operations, failures are inevitable after long-term operation. Failures may not only reduce the efficiency of equipment operation and affect other parts of the equipment, but also lead to production interruptions, causing a series of economic losses to the enterprises.

Although it is difficult to completely avoid the failure of planetary gear reducers, in actual industrial production and mechanical operations, some simple methods can be used to detect and judge the signs of failure of planetary gear reducers as early as possible, and take repair measures in time.

In more than 10 years of R&D and production of planetary gear reducers, Shanghai SGR Heavy Industry Machinery Co.,Ltd. has accumulated rich experience in fault diagnosis of planetary gear reducers, and summarized the following methods for early diagnosis of planetary gear reducer failures.

(1) Judging by appearance and sound of the planetary gear reducer

Starting from the appearance and sound is one of the simplest ways to judge the fault of the planetary gear reducer. After running for a period of time, you can observe whether the reducer has obvious damage, cracks, deformation and other external damage. If so, the reducer may have failed.

In addition, if the planetary gear reducer makes a sharp, squeaking or irregular sound when running, there may be a problem with the planetary gear reducer.

(2) Analyze and judge from vibration of the planetary gear reducer

In addition, analyzing from the perspective of vibration is also one of the most commonly used methods to determine the fault of a planetary gear reducer. Generally speaking, if there are problems such as indentation and rust on the planetary gear reducer, it will affect the vibration of the planetary gear reducer. By using the vibration signal detection of the reducer, the vibration size and frequency information of the reducer can be observed.

Vibration analyzers can also be used to regularly check the vibration and vibration data of planetary gear reducers to help identify early signs of failure, such as imbalance, misalignment, etc. Spectral analysis of vibration signals can also be performed to more accurately determine the source of the failure.

(3) Analyze and judge from temperature of the planetary gear reducer

The easiest way to analyze from a temperature perspective is to touch the planetary gear reducer housing with your hand to check for overheating. If the temperature of the reducer rises abnormally, it may be a sign of poor lubrication or internal problems.

Some customers in the machinery and industrial industries often install temperature sensors when installing planetary gear reducers to monitor the temperature changes of the reducers in real time. Abnormal temperature rise may be a precursor to failure. If the temperature of the reducer is found to be abnormally high, it should be stopped immediately and preventive measures should be taken.

(4) Judging from the lubricant of the planetary gear reducer

First, check the oil level of the lubricating oil to see if it is normal; second, check the oil quality of the lubricating oil, including whether the color, smell and viscosity of the lubricating oil are normal. If there are metal chips, dirt or other impurities in the lubricating oil, it may be a sign of wear of internal parts.

Additionally, if the oil is found to be dark, thin, or contains foreign matter, there may be gear wear or other problems.

(5) Judging from the components of the planetary gear reducer

Check the bearings, gears, seals, loads and other components of the planetary gear reducers; including checking whether the bearings have abnormal noises, such as clicking and friction sounds, bearing temperature and lubrication conditions, etc.; check the wear and clearance of the gears, check the wear of the seals and whether there are any leaks; check whether the reducer performs normally under different load conditions, and whether there are any load fluctuations during operation.

Through the above methods, the failure of the planetary gear reducer can be judged at an early stage, and corresponding measures can be taken in time for maintenance and repair, so as to ensure the normal operation of the planetary gear reducer, and ultimately ensure the normal operation of the equipment and extend its service life.(Author:SGR, Angie Zhang)

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