Hitachi 70 (ZX70 / EX70) Hydraulic Excavator — Full Details
Overview
“Hitachi 70” refers to a medium-excavator in the ~6.6-7 ton class. It balances power, mobility, and versatility. Suited for jobs like urban construction, utilities, small-scale excavation, road maintenance, foundation work, landscaping, etc. Quiet, responsive, stable and good uptime.
Technical Specifications (Typical / Standard Configuration)
| Parameter | Value / Range |
|---|---|
| Operating Weight | ~ 6,650 – 6,950 kg |
| Engine Power | ~ 42.4 kW (≈ 57 HP) |
| Bucket Capacity (ISO Heaped) | ~ 0.13 – 0.33 m³ |
| Arm / Boom Options | Standard arm ~1.62 m, optional longer arm ~2.12 m in some configs |
| Fuel Tank Capacity | ~ 135 L |
| Hydraulic Oil System Capacity | ~ 90 – 100 L |
| Width over tracks | ~ 2,200 – 2,260 mm |
| Height to top of cab | ~ 2,600 mm |
| Ground Clearance | ~ 360 mm |
| Track Shoe Width | ~ 450 mm |
| Travel Speed | ~ 5 km/h with high gear; lower in first speed |
| Swing Speed | ~ 11-14 rpm depending on variant |
| Digging Depth | ~ 4,170 mm (≈ 4.17 m) with standard arm |
| Maximum Reach | ~ 6,320 mm along ground (≈ 6.32 m) |
| Hydraulic Pump Flow Rate | ~ 130 – 180 L/min depending on configuration |
| Hydraulic Relief / System Pressure | ~ 27,400-31,400 kPa (≈ 275-315 bar) depending on variant |
Features & Design Highlights
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Engine & Efficiency: Modern engine with good torque; fuel-saving controls in newer models (e.g., “G” series) to reduce fuel wastage, especially when full power not needed.
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Hydraulic System: Smooth control, responsive boom/arm/cab movements; priority valves; sufficient flow to support attachments.
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Undercarriage & Tracks: Robust steel tracks, standard track gauge gives good stability; options for rubber or steel tracks depending on terrain.
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Operator Comfort: Cab with good visibility, ergonomic controls, likely ROPS/FOPS certified; fewer vibrations, decent ergonomics.
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Maintenance & Durability: Designed for easier access to service points; filtration systems; durable boom and arm connections; reinforced joints; good spare-parts availability.
Working & Operational Capabilities
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Good for medium excavation, trenching, material handling tasks.
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Can operate with various attachments (buckets, breakers, etc.).
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Stable lifting performance at moderate reach; safe swing radius.
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Good travel for moving around site; agile in confined workspaces for its class.
Advantages
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Moderate size: enough power, yet manageable transport and maneuvering.
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Fuel & maintenance costs more moderate compared to larger machines.
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Many optional configurations (boom/arm length, track width, attachments) allowing more customization.
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Reliable brand and good support in many markets.