What are the causes of looseness and leakage of the reducer?

1、Leakage occurs

Due to the loosening of parts, vibration and reduction gear affected by heat, reduction gear sealing surface and pipe joints, leakage phenomenon will occur; Some defects, such as casting, are difficult to be found during assembly and debugging, but due to vibration and impact in the process of operation, such defects are exposed and manifested as leakage (seepage) of oil. Therefore, the run-in period will occasionally appear leakage phenomenon.


The newly machined and assembled parts have the deviation of geometric shape and matching size. In the early stage of use, due to the impact, vibration and other alternating loads, as well as the influence of heat, deformation and other factors, plus excessive wear and other reasons, it is easy to loosen the previously fastened parts.

3、More operation errors

Due to insufficient understanding of the structure and performance of the reducer (especially the new operator), it is easy to cause failures due to operational errors, and even cause mechanical and safety accidents.

4、Bad lubrication

Due to the small fitting gap of the newly assembled parts and other reasons such as assembly, lubricating oil (grease) is not easy to form a uniform oil film on the friction surface to prevent wear. Thus, the lubrication efficiency is reduced, resulting in early abnormal wear of the parts. In serious cases, the friction surface of precise fit will be scratched or occluded, leading to the occurrence of faults.

5、Wear fast

Due to the influence of parts processing, assembly and debugging of the new reducer, the contact area of the mating surface is small and the allowable torque is large. Reducer in the process of running, concave and convex part chimeric friction each other on the surface of the parts, grinding of metal debris fell down, and as an abrasive, continue to participate in friction, accelerate the abrasion on the surface of the parts with more.
Therefore, the run-in period is easy to cause parts (especially with the surface) wear. At this time, if the overload operation, it may lead to components damage, early failure.