See also
Downloadable brochures and spec sheets for current models are here.
EX8000-5
Durability
Rigid Box Design - Resists bending and twisting forces.
Computer-assisted analysis was used to check that the frame box can withstand heavy-duty excavation work.
Solid Cast Track Frame - More strength for this key area.
The track frame is cast as a solid unit and includes a flange for improved reliability. This non-welded design is used exclusively on large Hitachi models.
Rugged Lower Rollers, Track Links and Drive Tumblers/Help to boost durability at rough tough work sites.
Lower rollers, track links and drive tumblers are newly designed to sustain the giant body for increased durability and serviceability.
Constant Correct Track Tension/Nitrogen gas accumulators absorb abnormal track tension.
Helps prevent abnormal track tension from causing damage. Travel is automatically stopped if accumulator pressure exceeds a preset level. At this time, alert information and countermeasures are indicated on the multi-display monitor.
Flow-Retarding Control at Cylinder Stroke Ends/Improves controllability with longer service life.
When nearing 30 cm ahead of the cylinder stroke end, the flow and pressure are reduced to retard the cylinder movement. This helps reduce impact at the stroke end to increase controllability and to extend service life. This mechanism is provided for arm/bucket roll-in and roll-out.
Strategically Positioned Oil Coolers/Helps keep oil temperatures lower.
Three oil coolers are used for optimal cooling efficiency. They are positioned far from the engine radiator for even better cooling potential.
High-Pressure Filter/Provides clean oil.
Hydraulic oil is filtered at high pressure to remove damage-causing contaminants. This filter is positioned down-line from the pumps to help prevent damage in the rare event of pump failure. Positioned for easy maintenance.
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