Machines working long shifts in mining and construction depend on a stable hydraulic drive to maintain productivity. Sustained load and contaminated oil gradually damage critical contact surfaces, producing weak force, drifting motion, abnormal noise or overheating. The 4470057 Hitachi Excavator Swing Drive Assembly fits Hitachi ZX70, ZX85, ZX75, ZX70-3 excavators, providing reliable torque transmission and smooth operation that keeps your fleet moving.
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