コマツ（小松製作所） PC 20 MR

### KOMATSU PC20MR‑2 / PC20MR‑3 – Specifications #### 1. General - **Model**: Komatsu PC20MR‑2 / PC20MR‑3 (Mini Crawler Excavator) - **Operating Weight**: **2,140–2,220 kg** (canopy); **2,385 kg** (cab) - **Bucket Capacity (SAE heaped)**: **0.066 m³** (std) - **Production Years**: 2005–2020 - **Tail Type**: **Ultra‑short tail swing** (rear swing radius **800 mm**) #### 2. Engine - **Brand / Model**: **Komatsu 3D76E‑5 (PC20MR‑2) / 3D76E‑6 (PC20MR‑3)** - **Type**: 3‑cylinder, water‑cooled, diesel - **Displacement**: **1.1 L** - **Rated Power**: **15.5 kW / 21 HP @ 2,500 rpm** - **Emission**: **Stage II / Tier 2** (PC20MR‑2); **Stage IIIA** (PC20MR‑3) - **Fuel Tank Capacity**: **28 L** #### 3. Hydraulic System - **Main Pumps**: 2 × gear pumps - **Max Flow**: **35 L/min** (auxiliary) - **System Pressure**: **21 MPa (210 bar)** - **Hydraulic Oil Tank**: **19 L** #### 4. Working Performance - **Max Digging Reach**: **4,170 mm** - **Max Digging Depth**: **2,350 mm** - **Max Dumping Height**: **2,820 mm** - **Bucket Breakout Force**: **19 kN** - **Slewing Speed**: **8.9 rpm** - **Travel Speed**: **4.6 km/h** - **Ground Pressure**: **28 kPa** (std rubber track) #### 5. Transport Dimensions (std) - **Length**: **3,810 mm** - **Width**: **1,200 mm** (300 mm track shoes) - **Height (to cab top)**: **2,520 mm** - **Track Shoe Width**: **300 mm (std)** #### 6. Undercarriage - **Track Type**: Rubber track (std) - **Track Length on Ground**: **1,880 mm**