The usual reference data for the oxidation problem and drying influence index of lubricating grease are two data of evaporation loss and dropping point. Lubricating grease will have evaporative loss due to the use environment and high temperature. When it reaches the extreme point, a drop point will appear and flow. However, there is no national standard for the influence of dry environment on the absorption and loss of oil and grease. There is no case that a dry environment will affect the lubricity of grease.
There may be slight moisture in the production process of lubricating grease, but the proportion is rarely less than 1%, but water and grease are not compatible, and the storage and application of grease in a dry environment is more conducive to the stability of grease.
Therefore, if the environmental humidity of the grease is only very low, the theory of high dryness should not affect the performance and use changes of the grease. However, in the actual test and evaluation, we have not conducted relevant tests on the test conditions and cannot fully have the correct guidance. However, it is a constant fact that lubricating grease likes dry use scenarios and does not like humidity and high temperature.
