卡特 303.5 E CR

### CAT 303.5E CR – Specifications #### 1. General - **Model**: Caterpillar 303.5E CR (Mini Excavator) - **Operating Weight**: **3,480 kg** (canopy) / **3,640 kg** (cab) - **Bucket Capacity (SAE heaped)**: **0.07–0.14 m³ (std 0.10 m³)** - **Tail Type**: **Zero tail swing (CR)** #### 2. Engine - **Brand / Model**: **CAT C1.8** - **Type**: 3-cylinder, water-cooled, turbocharged diesel - **Displacement**: **1.8 L** - **Rated Power (Net)**: **18.5 kW / 24.8 HP @ 2,400 rpm** - **Emission**: **EU Stage IIIA / Tier 4 Final** - **Fuel Tank Capacity**: **45 L** #### 3. Hydraulic System - **Pumps**: 2 variable displacement axial piston pumps + 1 gear pump - **System Pressure**: **24.5 MPa (245 bar)** - **Max Flow**: **80 L/min** - **Auxiliary Flow**: **30–60 L/min** (adjustable) - **Hydraulic Oil Tank**: **25 L** #### 4. Working Performance - **Max Digging Reach**: **4,690 mm** - **Max Digging Depth**: **2,710 mm** - **Max Dumping Height**: **3,120 mm** - **Bucket Breakout Force**: **29.5 kN** - **Arm Breakout Force**: **19.6 kN** - **Slewing Speed**: **9.2 rpm** - **Travel Speed**: **2.6 / 4.5 km/h** (low / high) - **Gradeability**: **30°** #### 5. Transport Dimensions (std) - **Length**: **4,720 mm** - **Width**: **1,550 mm** (300 mm track shoes) - **Height (to cab top)**: **2,460 mm** - **Track Shoe Width**: **300 mm (rubber track, std)** - **Ground Pressure**: **29 kPa** (rubber track) #### 6. Undercarriage - **Track Type**: Rubber track (std) / steel track (option) - **Track Links**: **39** - **Track Width (outer)**: **1,550 mm** #### 7. Standard Equipment - ROPS/FOPS cab with A/C - Pilot control joysticks - Auto-idle - Auxiliary hydraulic circuit - Cat telematics (optional)