Lubricant temperature
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What are the effects of excessively high or low lubricant temperature?
Viscosity decreases as temperature rises. As the temperature rises and the composition changes, coking tends to occur.
What does the original poster want to know? The oil temperature control requirements vary depending on the location
If the temperature of the lubricating oil is too high, its lubricity and viscosity decrease, which can lead to the breakdown of the local oil film, resulting in loss of lubrication, reduced bearing capacity, and even carbonization of the lubricating oil causing bearing wear； When the lubricant temperature is too low, its viscosity increases; although this can enhance the load-carrying capacity of the oil film, it reduces the fluidity of the lubricant, thereby affecting its lubricating function.
When the lubricant temperature is low, the oil has a high viscosity, resulting in a thick oil film. This gives it good load-carrying capacity but poor flow properties; it does not easily cover the friction surfaces, and in severe cases, semi-dry friction can occur. When the lubricating oil temperature is high, its viscosity is low, the oil film becomes thin, the load-carrying capacity decreases, and proper lubrication conditions cannot be established. Therefore, it is necessary to control the oil temperature at the outlet of the lubricating oil pump.
Excessively high oil temperatures can also accelerate the oxidation of lubricating oil, reducing its service life. Lubricating oil is flammable, and very high temperatures pose a safety risk as well
Excessively high lubricant temperature can reduce the viscosity of the oil； At the same time, higher temperatures accelerate the deterioration of oil. If the oil temperature is too low, its viscosity increases, which affects the lubrication of the equipment.
Maintain the normal lubricating oil temperature at: 45–65℃