حفارة مجنزرة Fiat-Hitachi ZX135US-5B

Hitachi ZX135US (Zaxis 135 Ultra Short tail swing) is a highly popular 13-to-15-metric-ton class crawler excavator designed for confined urban jobsites. While specifications vary slightly depending on the generation (ranging from the original series to the modern Dash-6 and Dash-7 models),
Core Performance Specifications
• Net Rated Power: 100 HP (74.9 kW) @ 2,000 RPM.
• Operating Weight: 31,306 lbs to 35,053 lbs (14,200 kg to 15,900 kg) depending on options like counterweights and track shoe widths.
• Max Digging Depth: 19 ft 7 in (5.98 m).
• Max Digging Reach: 28 ft 7 in (8.72 m) at ground level.
• Bucket Digging Force (ISO): 23,380 lbf (104 kN).
________________________________________
Detailed Engine & Hydraulic Systems
The modern iterations rely on high-efficiency, intercooled Isuzu engines paired with advanced hydraulic controls.
• Engine Model: Isuzu AR-4JJ1X (Dash-6 / Dash-7), a 4-cylinder, 3.0L water-cooled engine.
• Aspiration: Variable geometry turbocharged, intercooled, with cooled EGR.
• Emissions Compliance: Tier 4 Final / Stage IV / Stage V utilizing DOC, CSF, and SCR systems (no DPF required on many versions).
• Main Hydraulic Pumps: 2 variable displacement axial piston pumps providing a maximum oil flow of 2 x 117 L/min (approx. 2 x 31 gal/min).
• Swing Speed: 13.3 min⁻¹ (RPM