Traditional wheel hub bearings, even if forged (not all), are mostly iron sealed bearings that rely on dust seals to isolate water and sediment. The key to determining the quality of bearings is not whether iron seals are used, but rather the usage scenario.
For two wheeled vehicles, rubber sealed bearings are more suitable because regardless of the weather, water ingress is an unavoidable phenomenon. High quality bearings should be smoother and have a longer service life.
After the vehicle has been driven for a certain period of time, it is recommended to check the condition of the bearings. The method is simple, just open the wheel hub and pry open the dust seal, observe the flexibility of the bearing and whether there is rust, and you can determine whether it needs to be replaced.
Bearing damage, aging, and rusting not only cause the wheel hub to not run smoothly, but also the deformation caused by long-term rusting can affect the shock absorption effect and make the vehicle travel unstable. When the central axis is pulled out and feels stuck, it is likely a bearing problem.
The condition of the bearings can be inspected and judged through maintenance tools. For the modification and maintenance of wheel hub bearings in electric vehicles, it requires the expertise of professionals.
