As the weather turns cold, there are many problems with the lubricating oil used in the operation of the Roots blower. The following is a brief introduction to the use and precautions of Roots fan lubricating oil. 1. At present, there are two main lubrication methods for Roots blower, including grease lubrication and splash oil lubrication. When lubricating, the oil temperature of the gear lubricating oil generally does not exceed 65 ℃, and the amount of refueling should not be too full. Before starting the fan, open the vent cap on the upper part of the main fuel tank and the auxiliary fuel tank, and add lubricating oil to the point 2-3 mm above the oil level line. Always pay attention to observe the splashing situation of lubricating oil and the position of oil quantity. The oil level of the lubricating oil must be above the oil level scale line, and the error should not exceed ±1.5mm. Pay attention to whether the cooling of the lubricating oil is normal, pay attention to the quality of the lubricating oil, often listen to whether there is any noise in the operation of the blower, and pay attention to whether the unit is working under the specified working conditions. 2. There are several points to explain why lubricating oil should be used: 1. The choice of viscosity during oil change is the most basic selection factor for gear oil. If the viscosity is too large, the friction surface will be overheated, which will also cause unnecessary power loss. If the viscosity is too small, the oil will be thrown off the tooth surface due to the centrifugal force, which will easily cause oil leakage from the oil seal, which may be on the gear surface. The formation of lean oil lubrication results in increased wear and even sintering. Therefore, it is very important to choose a suitable viscosity. At present, most lubricating oil manufacturers for Roots blowers recommend gear oils with viscosity grades of 80W/90, 85W/90, 85W/140, etc. You can refer to the instruction manual when changing the oil. 2. The choice of extreme pressure performance, in my country's gear oil standard (GB7631, 7-89), the gear oil is divided into L-CLC (general vehicle gear oil), L-CLD (medium load vehicle gear oil) corresponds to API classification Specifications of GL-3, GL-4, GL-5. In order to prevent tooth surface scratching, peeling, and sintering caused by high stress when gears are in contact, gear oils with good anti-wear extreme pressure properties must be selected to maintain proper load-carrying properties. Therefore, when selecting oil products, users must not add other oil products such as internal combustion engine oil, hydraulic oil, etc. to the gearbox, so as to avoid insufficient extreme pressure and anti-wear performance and damage to the gear. 3. The materials and structures of the gears are different, and the oil should be selected separately to ensure that the gearbox seals do not leak, the copper parts do not corrode and the gears are fully lubricated. 4. Choose high-quality brand gear oil. High-quality brand vehicle gear oil can not only effectively protect gears, reduce wear and tear, and make the operation of Roots blower lubricating oil easier, but also prolong the service life of oil products and reduce maintenance and repair costs. Therefore, when choosing gear oil, it is necessary to buy high-quality brand gear oil at the regular location of the sales channel. 3. Replenishment and replacement of lubricating grease After a period of use, the grease will experience aging and leakage consumption, so it needs to be replenished or replaced in time. The Roots blower uses grease, which is usually replenished every 3 months. Whether it needs to be replaced depends on the quality of the grease. The main judgments are as follows: 1. Check whether the grease is mixed with too many hard particles. During inspection, take a small amount of grease with your fingers and twist and press, and you can judge by feeling; 2. Check whether the grease is oxidized or deteriorated. If it has been oxidized and deteriorated, it can be distinguished from the appearance. At this time, the color of the grease becomes black or deepened, and a hard film will be formed on the surface. 3. Different types of grease cannot be mixed, new grease and old grease cannot be mixed, so when replacing the grease, the waste grease should be completely removed and then filled with new grease. 4. The filling of grease should be appropriate. Too little filling will result in insufficient lubrication. Excessive filling, excessive stirring of the grease, rapid heating, and oil separation, decomposition and leakage. Roots Blower