2026 brand-new Doosan DH180, DH200, DH200LC track rollers are original products of Tianjin Longdong source factory. Made of high-strength heat-treated alloy steel, they boast heavy load-bearing capacity and superior wear resistance for medium excavators. The full-seal lubrication structure prevents mud, water intrusion and oil leakage. Standard OEM size ensures precise installation. As direct factory supplier, we offer favorable prices and exclusive bulk discounts.