What effects does gear backlash have on gears

Gear backlash refers to the gap produced after gears mesh, which has a significant impact on gear performance. A certain gear backlash is beneficial for gear lubrication, but excessive gear backlash will accelerate gear wear, reduce gear efficiency and generate noise during the operation of the reducer.

1.Effects of the gear backlash on gear performance

•Positive Effects

ⅠA small amount of gear backlash provides space for the flow of lubricating oil, reducing wear and heat generation caused by gear friction

ⅡGears will undergo slight deformation due to temperature changes, and a certain gear backlash can enable the reducer to better adapt to the deformation of gears caused by temperature changes, thus avoiding interference during the operation of the reducer.

ⅢIn a high-load working environment, gears will also undergo slight deformation, and a certain gear backlash reduces the influence of gears.

•Negative Effects

ⅠIf the gear backlash is too large, it will cause the gears to make noise, increasing the noise level of the reducer during operation

ⅡIn the use of high-precision equipment, excessive gear backlash can lead to inaccurate positioning

ⅢExcessive gear backlash can lead to uneven gear meshing, causing gear wear and thus reducing the service life of the reducer.

ⅣIn reducer equipment, gear backlash can result in power loss, lower the efficiency of the reducer, and affect the service life of motor components

2..The Reason of gear backlash increasing

•The manufacturing process accuracy of gears directly affects the size of gear backlash. The larger the tolerance, the greater the gear backlash.

•During the operation of the reducer, wear occurs between the teeth, resulting in an increase in the backlash. This is particularly evident in high-load or insufficiently lubricated working environments.

•If the gears are not correctly aligned, it will lead to uneven wear and increased backlash

•The distance between the centers of the meshing gears must be within the specified tolerance range.

•Temperature changes can cause gears to expand, thereby altering the size of the gear backlash.

•The size of gear teeth will deform due to the elasticity of their material.

•Insufficient lubrication will accelerate gear wear. As the reducer works for a long time, the gear backlash will gradually increase

•The tooth thickness of gears directly affects the size of gear backlash, the thicker the teeth, the smaller the gear backlash.