Gear tooth face wearTooth face is wore to shine, tooth thickness become thinner, wear rim between working face and non contact face, even worse, gear top become pointy, diameter become smaller, and the entire tooth disappeared.The specific reasons are:There are sand and dirt inside the lubricating oil. Especially in dusty areas, if the motorcycle engine sealing is not good, it easily does harm to cheap brakes, which will wear and tear.The hard tooth face is too rough and there will be large frictional resistance when meshing, the soft tooth face will be chipped and wear out soon.The viscosity of motorcycle lubricatingoil is low, then the oil film will be not thick enough.The gear tooth face is not hard enough, or the depth of hardened layer is too enough and can’t wear well.

The gear tooth thickness is too big or the center distance is too small, which will cause the meshing clearance is too small to form the oil film and then wear out.Resolution:Make sure the sealing of the motorcycle engine lubrication system, change the seal gasket or apply seal glue after disassembling the gearbox to avoid dust. At the same time, replace lubricating oil timely as required.Improve the precision of tooth face, especially the hard tooth when there are a large gap between a pair of hard and soft tooth, there must have low roughness.Use the oil with high viscosity.Ensure the quality of heat treatment, especially the depth of hardening layer and surface hardness.

Control the thickness and the box center distance to ensure the machining quality,Example:Fault. Riding a motorcycle after 5000 km, the odometer did not turn. Open the motorcyle gear, found that the personal watercraft parts or motorcycle sprocket have been wore out.Detection. Check the appearance. There is no lubricating oil inside the motorcycle gear box and there is a lot of dust and other dirt on the gear face. And there is no problem with tooth face roughness and lubricant viscosity. 

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