Reducer has the characteristics of large bearing capacity, high transmission efficiency, generally used for input shaft and output shaft are arranged in a vertical direction of the transmission device. For the coal mine scraper reducer oil leakage of the reasons are usually only two points: sealing ring damage and the box body joint surface is not strict. Most of the oil leakage of the scraper reducer is caused by the damage of the sealing ring. After long-term operation and the influence of underground coal mine environment, the sealing ring will inevitably wear down, resulting in poor sealing effect and oil leakage. However, it can be well solved by simply replacing the sealing ring. For the box body joint surface lax than the former slightly less, this situation is mostly the upper and lower box body lax, the end pressure cap is not tight, may be caused by the assembly irregularities, may also be caused by the long-term operation of bolts loose, the solution is to tighten all parts of the bolts. Henan Shuangzhi machinery specializes in the production of all kinds of coal machine accessories: reducer 1 shaft assembly, 2 shaft assembly, 3 shaft assembly, 4 shaft assembly, etc., welcome to consult and cooperate!