The track roller is used to support the weight of the tractor while rolling on the track (track link) or track surface of the track. It is also used to limit the track and prevent lateral slippage. The track roller forces the track to slip on the ground as the tractor turns.
The track roller is often in muddy water and is subject to strong impact, so it is required to be sealed reliably and the rim is wear-resistant.
The function of the track roller is to transfer the weight of the locomotive to the ground and roll on the track. In order to prevent derailment, the track roller should also be able to prevent the track from moving laterally relative to it.
The track roller often works in muddy sand, and it is subjected to strong impact. The working conditions are extremely bad and the rim is easy to wear.
The requirements for the track rollers are: rim wear, reliable bearing seal, and low rolling resistance.