Support roller ?65-21-000??

A65-21-000SB double-sided support roller
It is a part of the tractor running system 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 coming off the track; to prevent the support rollers from coming off the tracks, the rollers have flanges. Spare part of running systems to bulldozers KOMATSU - D60A-6/-7/-8, D60F-7/-7A/-8/-8/-8A, D65A-6/-7/-8/-11 (quantity per 1 bulldozer - 4/6 pcs. ).