Can the excavator bottom roller be repaired

How to solve the wear problem of excavator bottom roller:
The first is to change the Angle of the floating seal ring seat cavity in the end cap from the original 15° to 10°, so as to increase the contact surface between the end cap and the O-ring, and prevent the O-ring and the seat cavity from relative rotation, so that the O-ring and the end cap, the sealing of the wheel body more reliable.
The second is to increase the size of the floating seal ring seat formed by the wheel body and the end cap, so as to reduce the pressure and friction resistance of each pair of floating seal ring contact surface, so as to reduce the heat generated by the floating seal ring contact friction.
The third is to increase the waist diameter of the support wheel to increase the volume of the oil chamber at the wheel waist, so as to ensure adequate lubrication. By increasing the distance of the seat cavity, the oil storage space at the floating seal ring is increased to ensure that the lubricating oil can effectively cool the floating seal ring. An oil groove is made on the inner wall of the copper sleeve to make it fully lubricated with the contact surface of the axle; At the same time, oil holes are drilled in the inner wall of the wheel to ensure that the lubricating oil can circulate.
The damage of the undercarriage rollers will cause a lot of failures, and the small excavator may walk astray, walk weak, etc., so it is crucial to pay attention to the maintenance of the undercarriage rollers. In daily work, excavator bottom roller should be avoided for a long time immersed in mud, snow and ice. After the completion of the work every day, the unilateral track should be supported, and the walking motor will get rid of the dirt and other debris on the track, especially in winter, during construction, it is necessary to keep the excavator bottom roller dry, because there is a floating seal between the external wheel and the shaft of the support wheel, if there is water at night, the seal and the ice will be scratched during the next day's operation, resulting in oil leakage.
Whether the excavator bottom roller can be repaired needs to be judged according to its damage. If the excavator bottom roller is carefully maintained, the service life is about 2000 hours. If there is rupture, serious wear, and no direct effect, it must be replaced.