CAT D10N D10R D10T2 D10 D10T TRACK ROLLER 1FL BOTTOM ROLLER CRAWLER ROLLEER 309-7679 ┃ RedShinemachinery

What's the function of truck rollers?

The functions of the track roller mainly concluded two points:

1) To transfer the weight of the machine to the ground and to roll upon the track.    

2) To prevent derailment, the track roller must also be able to restrain the track from lateral movement.