Dh500 Track Roller For Daewoo Excavator Parts Rollers are used to support the weight of the tractor while rolling on the rails (rail links) or track decks of the tracks, and they are also used to restrain the tracks and prevent lateral slippage. When the tractor turns, the rollers force the track to slide on the ground. Rollers are often exposed to mud and dust and are subjected to strong impacts, so they require reliable seals and wear-resistant rims
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