Hitachi Zaxis Dash-5 Excavators Debut

October 2011, Vol. 66 No. 10

The second group of new ZX Dash-5 excavators has been released by Hitachi. The ZX470LC-5, ZX670LC-5 and ZX870LC-5 models replace the predecessor ZX450LC-3, ZX650LC-3 and ZX850LC-3 units.

These new Dash-5 excavators are more productive. Greater horsepower combined with optimized hydraulics for bigger arm and bucket digging forces result in more material moved per gallon of fuel.

The roomier cab has more side-to-side foot room and a larger door with more glass for better visibility to the side. The new heated and more comfortable air-suspension high-back seat provides excellent support. It also has more than 10 inches of travel, sliding together or independent of the joystick console, for the ultimate in customization. And the new multifunction monitor with its rotary dial provides enhanced diagnostic features and integrates the radio and HVAC controls in one place. The monitor also displays images from the new rearview camera, mounted on the counterweight. What hasn’t changed are the short-throw low-effort pilot controls for consistent and fatigue-reducing operational feel. Three power modes, power boost, and three years of ZXLink telematics carry over as well

An updated light package with two cab lights, one additional boom light and a hydraulically driven reversible fan for cleaning debris from the radiator screen are new on the Dash 5s. The fan runs only when needed, reducing noise, fuel consumption, and operating costs.

The IT4 Isuzu cooled EGR engine platform is less complex to maintain than selective catalytic reduction systems while delivering the productivity, fuel efficiency, and reliability customers have enjoyed with Tier 3 models. A new exhaust filter consists of a diesel oxidation catalyst/diesel particulate filter. It requires no daily attention due to its 4,500-hour service life.

Features that have been retained from the Dash-3 Series include the boom, arm and track options, and the hydraulics and electrical components. So have the welded boom bulkheads, D-channel side frames and extended service intervals. And operators can be assured of the same smooth operating control and responsive multitasking capabilities — making operations like grading a snap.

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