The function of the track roller is to transfer the weight of the excavator to the ground. When the excavator drives on the uneven road, the track roller will be impacted by the ground. Therefore, the load of the track roller is large, the working conditions are poor, and it is often in the dust and sometimes soaked in mud, so it requires a good seal. 

The track roller material is generally 35MN and 50MN The wheel surface is hardened to HRC48 and 57 to obtain good wear resistance. 

 

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