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The rubber-coated drums in roller systems are key components of belt conveyor systems. The rubber coating on these drums helps to improve the performance of the conveyor system, protects the metal drums from wear, prevents the conveyor belt from slipping, and ensures that the drums and the belt operate in sync, thus enabling the belt to function efficiently and with a high capacity. Additionally, the rubber coating helps to reduce sliding friction between the drums and the belt, as well as minimizes the sticking of materials to the surface of the drums, which in turn reduces belt deviation and wear. What are the oils suitable for use with stainless steel drums? 1. Oil-cooled stainless steel drums are among those with higher power output; we usually use ordinary N46 mechanical oil. Before leaving the factory, the cooling oil inside the drum is drained after 2 hours of operation at no load, so that the drum is shipped without any oil. Therefore, when using such stainless steel drums, it is necessary to fill them with oil according to the instructions before starting use, in order to prevent damage to the drum. 2. Oil-cooled stainless steel drums usually use N32 turbine oil. Since such drums have high requirements regarding the cleanliness of the residue and the quality of the oil, these directly oil-cooled stainless steel drums are pre-filled with cooling oil before leaving the factory, and their bodies are also sealed, so no additional oil needs to be added during use. No stainless steel drum should be operated without cooling and lubrication. In addition to refilling the oil upon request at the initial use, the quantity and quality of the cooling oil in the drum should also be checked regularly. When a lack of oil is detected, it should be replenished promptly. When it is detected that the quality of the oil has declined or the time for oil change has arrived, new oil should be replaced promptly. This is how normal operation of the drum can be ensured, and it also **extends the drum’s service life**.