小松 PC 55 MR

### KOMATSU PC55MR – Technical Specifications #### 1. General - **Model**: Komatsu PC55MR-2 (Compact Zero-Tail Excavator) - **Operating Weight**: 5,160 kg (Canopy version); 5,270 kg (Cab version) - **Bucket Capacity (SAE Heaped)**: 0.20 m³ (standard) - **Emission Standard**: Stage II / Tier 2 - **Manufacturing Country**: Japan #### 2. Engine (Komatsu 4D88E-6) - **Rated Net Power**: 28.5 kW (38.7 HP) @ 2,400 rpm - **Engine Type**: 4-cylinder, water-cooled, 4-cycle, direct injection diesel - **Displacement**: 2.19 L - **Fuel Type**: Diesel #### 3. Digging Performance - **Max Digging Reach**: 6,070 mm - **Max Digging Depth**: 3,800 mm - **Max Dump Height**: 4,230 mm - **Bucket Breakout Force**: 45 kN - **Arm Breakout Force**: 39 kN - **Swing Speed**: 9 rpm #### 4. Undercarriage & Travel - **Track Type**: Steel tracks (400 mm shoes standard) - **Track Width**: 1,960 mm - **Tail Swing Radius**: 1,060 mm - **Travel Speed (Low/High)**: 2.8 / 4.6 km/h - **Gradeability**: 35° (58%) - **Ground Pressure**: 30.3 kPa #### 5. Hydraulic System - **System Pressure**: 25 MPa (main relief) - **Pump Type**: Variable displacement axial piston pump - **Auxiliary Hydraulic Flow**: ~60 L/min (breaker circuit) #### 6. Transport Dimensions - **Length × Width × Height**: 5,550 × 1,960 × 2,550 mm #### 7. Capacities - **Fuel Tank**: 65 L - **Hydraulic Tank**: 50 L - **Engine Oil**: 7.5 L - **Coolant**: 8.5 L