How Much Do You Know About The Reducer Oil Seal? The Function And Types Of Speed Reducer Oil Seal
The speed reducer is generally placed between the motor and the working machine.And the input and output ends are respectively connected to the motor shaft and the main shaft of the working machine through a coupling.
The input and output shaft ends of the speed reducer each have a through cover, and the oil seal is installed in the through cover for sealing role. The most common types of oil seals are divided into single type and assembled type.
The role of oil seal for reducer
The oil seal of the speed reducer can protect the bearing and oil leakage of the reducer, so as to maintain the normal oil consumption of the speed reducer.
The quality of the reducer oil seal will largely affect the service life of the reducer. The high-quality oil seal can increase the working time of the speed reducer and prolong the service life.
Therefore, the structure and quality of the oil seal is one of the selection items that must be understood when selecting the reducer.
Classification of commonly reducer oil seals
Ordinary radial shaft seal
Also known as skeleton oil seal, it is usually suitable for low working speed to medium working speed. The sealing method is worn and easy to maintain. The sealing lip is easy to heat and should be kept sufficiently lubricated.
Labyrinth oil seal
It is usually suitable for relatively high working speed. This type of oil seal is a non-contact shaft seal, which has no wear and no local heating, and does not require maintenance under certain conditions. However, the labyrinth oil seal also has certain requirements for installation conditions, such as a minimum speed requirement, oil immersion lubrication, a horizontal shaft and a fixed installation base to avoid dust and sewage environment use.
Combined shaft seal
This type of oil seal is a lip-type contact seal and needs to be filled with grease. It can achieve high safety under harsh working conditions such as dust and humidity.
The main reasons for the failure of the reducer oil seal
A. Normal wear of the oil seal
B. Wrong sealing form, ambient temperature (high temperature, dusty environment)
C. Installation reasons, large misalignment
D. Wrong choice of oil seal material
E. Oil seal lip damage, damage caused by improper installation
Replacement method of speed reducer oil seal
1. Remove the fan cover and fan
2. Remove the end cover and the oil seal that needs to be replaced
3. Clean the joint surface sealant and deal with the damage
4. Treat the oil seal of the input shaft until it is smooth and has no trace
5. Spread a small amount of butter on the outer ring of the new oil seal and install it in place with a flat iron plate
6. Apply a small amount of butter on the lip of the oil seal, and apply sealant on the joint surface
7. To install the end cover, ensure that the position of the oil passage hole in the end cover is consistent
8. Confirm whether the oil seal has reverse lip phenomenon, and tighten the end cover bolts
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