https://www.xyexcavator.com/excavator/wheel-excavator/bucket-small-wheel-excavator.htmlHydraulic oil, engine oil, gear oil and other oil products shall be replaced during maintenance of excavator. In daily maintenance, many people pay more attention to replacing hydraulic oil and lubricating oil. Every maintenance will also pay special attention, so more people will ignore the replacement of gear oil. During daily use, the gear oil may leak light unnoticed, and it is easy to damage the bearings and gears after lack of gear oil. Serious will cause damage to the transmission. Therefore, it is very important to change the gear oil regularly. Some fill too much gear oil for convenience. This is also easy to cause damage to the excavator. Therefore, the gear oil should not be filled too much. This article will explain why. As each brand has different requirements for gear oil filling, this article is only for reference.
There are multiple sets of planetary gears in the traveling reducer. When the excavator moves, the gear inside rotates at high speed. Therefore, gear oil must be filled for lubrication. However, the traveling reducer is a closed space. After the reducer is filled with gear oil, the volume of gear oil will increase due to "heat expansion and cold contraction" during long-term operation. And the compressibility of the gear oil itself is very small, so it is easy to break the oil seal. In addition, when the gear is completely immersed in gear oil, the resistance of its operation will also be greatly increased, the friction will increase, and more heat will be generated. When filling an appropriate amount of gear oil, the other half of the air in the reducer has better compressibility. Even if the temperature of the gear oil increases and the volume expands during operation, the oil seal will not be squeezed too much, and the closed state of the reducer can be maintained.
