SW330E hydraulic excavator is a newly developed  E series excavator. The newly designed hydraulic system, with functions of flow  collecting and regenerating, is used to help the engine perform better. Optimal  match of the engine power and the hydraulic power helps improve working speed  and thus increase working efficiency. The Cummins engine compliant with Tier 2  emission standard is utilized to offer high efficiency, environmental  protection and fuel saving. Reinforced parts guarantee improved durability and  reliability of the machine.