卡特 303.5 E CR

# CAT 303.5E CR Compact Mini Excavator Specification ## 1. Basic Machine Data - Model: CAT 303.5E CR Zero Tail Swing Mini Hydraulic Excavator - Standard Operating Weight (Enclosed ROPS Cab + 300mm Rubber Track + Full Fluids + Standard Bucket): **3692 kg** - Operating Weight with Canopy: 3508 kg - Standard Heaped Bucket Capacity (ISO): **0.12 m³; optional range: 0.10~0.15 m³** - Standard Track Shoe Width: 300 mm rubber track; steel track optional - Fuel Tank Capacity: **46 L** - Hydraulic Oil Tank Capacity: 42.3 L; Full hydraulic system oil volume: 65 L - Standard Boom Length: 2460 mm; Standard Dipper Arm Length: 1460 mm - Standard Bucket Cutting Width (Bucket Tip Length): 750 mm ## 2. Engine System - Engine Manufacturer: Caterpillar (CAT) - Engine Model: **C1.8** - Engine Type: 4-cylinder inline, water-cooled, naturally aspirated direct injection diesel engine - Displacement: 1800 cc (1.8 L) - Gross Rated Power: 24.8 kW @ 2400 rpm - Net Rated Power (ISO 9249): **23.6 kW (31.6 HP) @ 2400 rpm** - Max Torque: 112 N·m @ 1400 rpm - Emission Standard: Euro 3 / Stage IIIA / Tier 4 Interim - Exhaust Treatment: EGR only, No DPF, No AdBlue urea injection - Air filter: Single-stage dry filter with cyclone pre-cleaner ## 3. Hydraulic System - Main Pumps: Single variable displacement axial piston load-sensing pump - Total Max Main Pump Flow: 87.6 L/min - Auxiliary Hydraulic Max Flow (breaker/auger): Primary 60 L/min, Secondary 27 L/min - Main System Relief Pressure: 24.5 MPa - Swing Circuit Pressure: 18.1 MPa - Standard dual auxiliary hydraulic piping for hydraulic breaker, auger & log grapple - Boom & arm & bucket cylinder safety holding valves fully equipped - Working Modes: Standard / Economy ## 4. Working Performance Parameters (Unit: mm) - Max Digging Depth (blade lowered): 2880 - Max Vertical Wall Digging Depth: 2450 - Max Ground Digging Radius: 5060 - Max Dumping Height: 3640 - Max Digging Height: 4980 - Minimum Tail Swing Radius: 890 - Bucket Breakout Force (ISO): 30.2 kN - Arm Crowd Force (ISO): 19.8 kN - Travel Speed (Low / High): 2.6 / 4.6 km/h - Max Travel Speed: **4.6 km/h** - Swing Speed: 9 rpm - Boom Swing Angle: Left 80° / Right 50° - Gradeability: 30° (58%) - Minimum Ground Clearance: 310 mm ## 5. Overall Transport Dimension (Standard Cab Configuration, mm) - Overall Transport Length: 4730 - Overall Transport Width: 1780 - Overall Transport Height (Cab Top): 2480 - Transport Size (L × W × H): **4730 × 1780 × 2480**