Hitachi introduced the first of its Zaxis-3 excavators — the 250-3 and 350-3 — in January 2006 and plans to show the Zaxis 280-3, 520 LCH-3 and 670 LCH-3 at Intermat in March. The excavators feature Isuzu engines and a hydraulic system that allows greater control over the simultaneous operation of arm and boom. Thanks to a redesigned recirculation system, arm and boom operating speed can be increased by as much as 15 percent, and forces for traction, digging and swing torque have also increased, says Hitachi. Rear-view camera comes standard.
