How to install and maintain the planetary reducer？

In recent years, with the development of planetary reducer technology, the application field of planetary reducers has been expanding. More and more purchasers in the industry have begun to pay more attention to the installation, maintenance, and common troubleshooting methods of planetary reducers after purchasing them.

As a planetary reducer manufacturer with more than 10 years of experience in the mechanical transmission industry, Shanghai SGR Heavy Industry Machinery Co., Ltd. Has not only accumulated rich experience in planetary reducer design, research and development, and production, but also accumulated knowledge in planetary reducer installation, maintenance, and troubleshooting.

planetary reducer

Today, I will introduce the knowledge and methods of installation, maintenance, and troubleshooting of planetary reducers.

 (1) How to install the planetary reducer correctly?
Correct installation, use, and maintenance of planetary reducers are important links to ensure the normal operation of mechanical equipment.

Generally speaking, before installing the planetary reducer, you should first confirm whether the motor and reducer are intact, and strictly check whether the sizes of the various parts connecting the motor and reducer match; then you will enter the formal installation stage. At this stage, you need to unscrew the screws on the dustproof hole on the outside of the reducer flange, adjust the clamping ring so that its side hole is aligned with the dustproof hole, insert the hexagon socket and tighten it and then remove the motor shaft key.

The last step of the installation is to connect the motor and the planetary reducer naturally. When connecting, it is necessary to ensure that the reducer output shaft is consistent with the motor input shaft in concentricity and that the outer flanges of the two are parallel. If the concentricity is inconsistent, the motor shaft will break or the reducer gear will wear.

 
（2）How to inspect and maintain the planetary reducer during daily use?
The inspection and maintenance of the planetary reducer is mainly divided into the following three aspects:

Check the oil level
When checking the oil level of the planetary reducer, you should cut off the power supply to prevent electric shock and wait for the reducer to cool down; You can then remove the oil level plug to check whether the oil is full. After the check, install the oil level plug;

Oil inspection
Different lubricants are prohibited from being mixed. When checking the lubricant, the power supply should be cut off to prevent electric shock, and the planetary reducer should be cooled. Then open the drain plug, take an oil sample, and check the viscosity index of the oil. If the oil is turbid, it is recommended to replace it as soon as possible.

When checking the planetary reducer with the oil level plug, in addition to checking the oil level to see if it is qualified, the oil level plug should be installed in time after the inspection.

Oil Replacement
Since the viscosity of the oil increases after cooling, it is difficult to drain the oil, so the planetary reducers should be changed at the operating temperature. The specific oil change operation is: you cut off the power supply to prevent electric shock and wait for the planetary reducer to cool down until there is no danger of burning. However, when changing the oil, make sure that the planetary reducer is kept warm.

The specific replacement steps are: you can place an oil pan under the drain plug, then you open the oil level plug, breather, and drain plug; drain all the oil; install the drain plug; inject new oil of the same brand; the oil volume should be consistent with the installation position; check the oil level at the oil level plug; finally tighten the oil level plug and breather.

 (3) How to deal with common faults of planetary reducers?
Common faults of planetary reducers are generally divided into bearing overheating, input and output shaft oil leakage, and high lubricating oil temperature.

The causes of bearing overheating usually include insufficient lubricating oil, bearing damage or wear, incorrect bearing installation, or inappropriate clearance. The corresponding solutions to these causes are timely refueling, bearing replacement, and readjustment of clearance.

The causes of oil leakage on the input and output shafts usually include aging or wear of the oil seal, and wear of the oil seal sleeve. The corresponding solutions are the replacement of the oil seal and the replacement of the oil seal sleeve.

The possible causes of high lubricating oil temperature include bearing damage or wear, insufficient lubricating oil or oil pump wear, bearing wear, cooler blockage, or low cooling water flow. The corresponding solutions to these problems are: bearing replacement, timely refueling or gear pump replacement, cooler cleaning, or opening the cooling water valve. ( Author: SGR, Angie Zhang)