How do excavators choose grease

I will continue to popularise the relevant knowledge of lubricant grease. How does the excavator choose grease? When choosing grease, you must see what characteristics the grease has and whether its scope of application are suitable for excavators. I: Use temperature range: The lubrication part of the excavator will produce a relatively high temperature under the action of friction. If the selected butter does not support the performance at high temperature, it will cause great damage to the excavator; II: Load size: When the load is heavy, the grease with high viscosity of the base oil and high thickener content should be selected. When the load is particularly large, it should be selected. There is extreme pressure additive grease; III. Environmental conditions used: In an environment where the air is wet and water is in contact with water, you should choose a grease with good water resistance. When there is a lot of dust, you should choose a thicker and hard grease, so that the sealing is better; Fourth, the working state of friction: if the vibration is large, you should choose grease with high viscosity, good adhesion and shock absorption.