Support roller T25-21-001??

T25-21-001SB double-sided support roller It is a part of the running system of the tractor and is designed to transfer the weight of the tractor to the tracks and through them to the ground, as well as to ensure the direction of movement of the tractor bogie and protect it from going off the track; to prevent the support rollers from going off the tracks on the rollers are flanges. Spare part of running systems for bulldozers T-25. 01, ?-25. 02, pipelayers TG-321.