The reasons that affect the softening of lubricating grease are as follows:
1. The consistency of grease will change due to temperature changes when it is running. The more viscous grease is, the more obvious it will become softer in the gearbox that has been running for a long time.
The higher the temperature, the softer, the viscosity decreases with the rise of temperature; the lower the temperature, the more viscous the viscosity, the viscosity increases with the low temperature, and the grease becomes thicker.
2. The scope of use of the base oil used in lubricating grease: it will affect the morphological change and viscosity change of the grease when the temperature changes.
The temperature application range of base oil in mineral oil is -20℃+130℃; the temperature application range of semi-synthetic oil is -30℃+150℃; the temperature range of fully synthetic oil is about -40℃+200℃.
The wider the use temperature of the base oil, the weaker the ratio of the consistency form to the viscosity change of the lubricating grease, and the ratio of changes during operation will decrease accordingly.
Based on the above reasons, it is an inevitable fact that lubricating grease will become soft when the temperature rises in the rotating gearbox, and the viscosity will decrease.
When selecting applications, we should refer to No. 2 grease as much as possible, the following data:
1. Lubricating oil application temperature range
2. Base oil used
3. Melting point of grease
4. Grease viscosity index
5. Grease viscosity
For 15 years, we have focused on researching and developing all kinds of food grade lubricants and greases for small household appliances.
Cooperate with many well-known brand customers, welcome to inquire and provide free sample testing.
