Common lubrication methods for RV25 aluminum alloy worm gear reducer include oil pool lubrication, oil injection lubrication, oil dripping lubrication and grease lubrication. The impact of different lubrication methods on their performance is as follows:
Oil pool lubrication :
Advantages : When the circumferential speed of the worm does not exceed 10m/s, oil pool lubrication is the preferred solution. Simple structure, compact, easy to use and repair, and low manufacturing cost. The worm gear is immersed in the oil tank and is fully lubricated, which can ensure that all parts of the worm gear and worm are well lubricated and reduce wear. Lubricating oil can absorb heat generated during worm transmission, reduce the temperature through the heat dissipation of the oil tank, and extend the service life of the reducer.
Disadvantages : The worm will stir the lubricant during rotation, causing a certain amount of energy loss and reducing transmission efficiency. For worms running at high speed, the stirring loss will be greater and foam will easily occur, resulting in a degradation of lubricating performance.
Oil injection lubrication :
Advantages : When the circumferential speed of the worm is more than 10m/s, the oil pool lubrication may cause the oil temperature to be too high due to excessive oil stirring loss, so oil injection lubrication should be used. The lubricating oil is sprayed at a certain pressure to the meshing part of the worm and the worm gear through the fuel injector nozzle, which ensures that the lubricating oil covers the surface of the worm quickly and evenly under high pressure, and provides good lubrication even under high speed and high load conditions. It can quickly take away the heat generated during the worm transmission process, effectively reduce the temperature, and avoid problems such as decreasing lubricant viscosity and deteriorating lubricating performance due to excessive oil temperature.
Disadvantages : A special fuel injection system is required, including oil pumps, oil pipes, fuel injection nozzles, etc. The equipment costs are high and the installation and maintenance are more complicated. The stability and reliability of the fuel injection system are high. If the fuel injection nozzle is blocked or the oil pump is malfunctioning, it may lead to insufficient lubrication and affect the performance of the reducer.
Oil dripping lubrication :
Advantages : The amount of lubricating oil can be accurately controlled according to the actual needs of the worm to avoid waste. Compared with oil bath lubrication, the stirring loss of drip lubrication is smaller and has a smaller impact on transmission efficiency. The amount of oil dripping can be adjusted according to different speeds, loads and other conditions, and the application range is wide.
Disadvantages : It is necessary to regularly check the working status of the oil cup or dropper to ensure that the lubricant can drip in normally and the maintenance workload is large. If the oil dripping position is improper or the amount of oil dripping is unstable, it may cause insufficient lubrication of part of the worm, affecting the transmission performance. The operators have high requirements, and the operators need to master certain technical knowledge and correctly adjust the amount of oil dripping and the position of oil dripping.
