let's talk about how to choose grease? The grease is composed of basic oil, thickener and additive. At normal temperature, it is a semi-solid state and can adhere to the metal without slipping. When we choose, we should choose according to the operation characteristics and use characteristics of different machinery, because it is directly related to the efficiency of the machinery, the life of the equipment, and the degree of wear, the consumption of grease, so how do we choose grease? First: choose the machinery with high ambient temperature and friction surface temperature according to the temperature, and choose the grease with high drop point, please use the composite lithium grease;second: according to the load, choose the equipment with large load to choose the grease with excellent extreme pressure wear resistance, you can use extreme pressure lithium grease, extreme pressure composite lithium grease, disulphide Molybdenum lithium-based grease; Third: Select according to the rotation speed. Due to the poor heat dissipation of the grease, the temperature rise of high-speed bearing is relatively fast, and the centrifugal force is large, and the grease is easy to lose. Please use high-viscosity general lithium-based grease and composite lithium-based grease; Fourth: Choose water resistance in wet areas according to the usage environment for better grease, please use general lithium grease. Under harsh working conditions, you should choose grease with better protection, adhesion and lubrication performance. Please use molybdenum disulphide lithium grease, extreme pressure lithium grease, and roller bearing grease. For equipment with long parking time, you should choose grease with good rust resistance. Please use universal lithium-based grease. Thank you for watching. If there is something wrong with what I said, your suggestions are welcome.