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The flexible conveying system is the core of the entire conveying equipment, and its stable operation provides safety guarantees for the conveying equipment. Since flexible conveyor equipment is affected by the working environment, which includes not only factors such as temperature and humidity in the operation workshop but also some human-induced factors. Therefore, it is essential to carry out proper daily maintenance and equipment management for flexible conveyor systems. Among these tasks, the lubrication of the flexible conveyor equipment is a crucial aspect of equipment maintenance. Proper lubrication helps to control friction, reduce wear and tear, extend the operational life of the equipment, prevent accidents, minimize the need for spare parts, ensure high availability, and save energy. Of course, the selection of lubricants for flexible conveyor systems also requires special attention. Selection of lubricants for flexible conveyor systems (1) Working load of flexible conveyor systems. Since the bearings are subjected to high loads, lubricants with higher viscosity should be used, and they should have good oiliness and extreme pressure properties. The load is low, so the viscosity of the lubricating oil used is relatively low, and the requirements regarding its oiliness and extreme pressure properties are also lower. (2) Motion speed of the flexible conveying system. When the speed of motion is high, a lubricant with lower viscosity is required to reduce frictional resistance, thereby minimizing power consumption and heat generation. The speed is low, so oil with a higher viscosity can be used. (3) The flexible conveying system operates stably. The stability of the workload affects changes in the viscosity and oxidation rate of the lubricating oil used. As the operating temperature rises, the viscosity of the lubricating oil decreases; conversely, its viscosity increases. Moreover, at high temperatures, the oxidation rate of the lubricating oil accelerates, causing it to degrade and reducing its lifespan. Therefore, lubrication points exposed to high temperatures should use lubricants with high viscosity, a high viscosity index, a high flash point, and good antioxidant stability. The flash point of general lubricating oils should be 20~30°C higher than the maximum temperature. Working in low-temperature conditions for a long time. Especially in winter, conveying equipment used for filling operations in cold regions has difficulty starting due to its high viscosity at low temperatures, which results in poor pumping performance; therefore, lubricants and greases with good low-temperature lubrication properties should be used, and the freezing point (or pour point) of the lubricants typically used should be 8–10°C lower than the ambient temperature. (4) In humid environments such as the \"plum rain\" season, where flexible conveyor systems operate under conditions of salt spray, water vapor, coolant, or emulsions, the lubrication points on these conveyors are prone to having their lubricants and greases deteriorate, become emulsified, or be washed away by water. In such cases, lubricants with strong anti-emulsification properties, good rust and corrosion resistance, as well as high adhesion, should be used. Additionally, appropriate sealing measures must be taken to prevent the intrusion of water, moisture, and salt spray. Media environments such as chemical environments and corrosive substances (strong acids, bases, salts, etc.) can easily increase the corrosivity of lubricants and greases; therefore, lubricants with good chemical stability should be selected.