The reducer is a power transmission mechanism in a low-speed high-torque mechanical transmission device. It is used in many fields such as construction machinery, lifting and transportation, smelting, petrochemicals, construction machinery, instrumentation, automobiles, ships and aerospace. Since the working environment of the reducer is mostly very bad, the malfunction caused by the lubricating oil often occurs during operation.
Reasons for the failure of the reducer due to lubricating oil:
1. Improper selection of lubricating oil
Different parts of the reducer have different requirements for the variety, viscosity and other properties of the lubricating oil. The matching selection can reduce the frictional resistance between the internal contact surfaces of the lubricating oil, and reduce the wear of the gear surface and the noise and vibration of the transmission. The effect of improper selection of lubrication will be greatly weakened, the dynamic pressure oil film is easy to rupture, and the gears and other surfaces are in contact with each other, and the pressure is concentrated, which seriously damages the gear surface and even damages the equipment.

2. Improper amount of lubricating oil
During the high-speed operation of the reducer, the oil pool is vigorously stirred, and the lubricating oil is sprayed around inside the reducer. If the amount of lubricating oil is too much, a large amount of lubricating oil will accumulate in the shaft seal, end cover, joint surface, etc., resulting in oil leakage, which will increase the running resistance of rotating parts such as bearings and gears, increase power consumption, and reduce heat dissipation space. High oil temperature and lower viscosity make the oil film thinner, destroying the normal lubrication state of the friction surface, and causing serious equipment wear.
If the amount of lubricating oil is too small, the gears, bearings and joint surfaces of the reducer will not get enough lubricating oil, and an oil film will not be formed, resulting in dry friction, which will also cause serious equipment wear.

3. Air, mechanical impurities, free water and other pollutants in the lubricating oil invade
When the reducer is in operation, the lubricating oil in the machine is very susceptible to mechanical impurities, water, air and other pollutants. For example, free water can make the lubricating oil produce acidic substances, corrode metal parts, and increase wear. The air mixed in the oil can cause the oil to oxidize and deteriorate, and even cause the metal parts to oxidize and corrode. The impurities reduce the cleanliness of the lubricating oil, deteriorate the oil quality, and reduce the viscosity level, causing the speed control system to jam, malfunction, and even damage the equipment .

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