코마츠 PC 78 US

### KOMATSU PC78US (Compact Excavator) – Specification #### 1. Operating Weight & Dimensions - **Operating Weight**: **7,365 kg** (cab, rubber track) - **Transport Dimensions (L × W × H)**: **5,250 × 2,320 × 2,620 mm** - **Track Width**: **450 mm** (rubber/steel) - **Track Gauge**: **1,820 mm** - **Min. Ground Clearance**: **360 mm** - **Rear Swing Radius**: **1,450 mm** #### 2. Engine - **Model**: **Komatsu SAA4D95LE‑5** - **Type**: Water‑cooled, 4‑cycle, turbocharged, air‑to‑air aftercooled - **Cylinders**: **4** - **Rated Power (Gross)**: **42.8 kW (57 HP) @ 1,950 rpm** - **Net Power**: **41 kW (55 HP) @ 1,950 rpm** - **Displacement**: **3.26 L** - **Emission Standard**: **EU Stage IIIA / Tier 3** - **Fuel Tank Capacity**: **110 L** #### 3. Digging Performance - **Max. Digging Depth**: **4,710 mm** - **Max. Vertical Wall Depth**: **4,030 mm** - **Max. Digging Reach (Ground)**: **6,790 mm** - **Max. Digging Height**: **5,760 mm** - **Max. Dumping Height**: **4,080 mm** - **Bucket Digging Force**: **53.9 kN** - **Arm Digging Force**: **38.2 kN** - **Swing Speed**: **10 rpm** - **Travel Speed (Low/High)**: **3.0 / 5.5 km/h** #### 4. Hydraulics & Bucket - **Main Pump Flow**: **130 L/min** - **Relief Pressure**: **24.5 MPa** - **Standard Bucket Capacity**: **0.28 m³** (heaped) - **Standard Bucket Width**: **600 mm** #### 5. Swing & Outreach - **Front Min. Swing Radius**: **2,050 mm** - **Swing Angle (Left/Right)**: **90° / 90°** --- ### Optional: PC78US‑11 (Latest Model) Quick Data - **Operating Weight**: **7,910–8,250 kg** - **Engine**: **Komatsu SAA3D95E‑1** (3‑cyl, 2.4 L) - **Rated Power**: **51 kW (68 HP) @ 1,850 rpm** - **Emission**: **EU Stage V / Tier 4 Final** - **Max. Digging Depth**: **4,660 mm** - **Std. Bucket Capacity**: **0.20 m³**