a track - supporting roller assembly , according to the disclosure , for supporting a crawler track of a crawler chassis includes a bearing unit and a track - supporting roller rotatably coupled to the bearing unit . the track - supporting roller includes at least one supporting body made of plastic . the supporting body serves as a damper and prevents a metal - on - metal contact between track chain links of the crawler track and the track - supporting roller . the track - supporting roller assembly according to the disclosure ensures a reduced noise development in the crawler chassis . at the same time , it is possible to also reduce the wear of the track - supporting rollers to a considerable extent .