卡特 320 D2

Product Overview The Cat 320D2 is a 21-ton class hydraulic excavator manufactured by Caterpillar, an American company and global leader in construction equipment. This unit is built in Japan. It is widely used in construction, quarry, road building, pipeline installation, and general excavation work. Key Specifications Model: Cat 320D2 Operating Weight: 21,000 kg Engine Power: 103 kW (138 hp) Bucket Capacity: 1.0 - 1.4 m³ Max Digging Depth: 6,560 mm Max Digging Radius: 9,820 mm Max Dumping Height: 6,490 mm Travel Speed: 5.4 km/h Main Pump Flow: 428 L/min System Pressure: 35 MPa (5,076 psi) Engine The 320D2 is powered by a Cat diesel engine delivering 103 kW at 2,000 rpm. The mechanical fuel system with low-pressure design tolerates variable fuel quality in emerging markets. The engine meets Tier 3 emission standards, allowing export to Southeast Asia, Africa, Middle East, and South America. Hydraulic System The hydraulic system delivers 428 L/min total flow at 35 MPa. It provides precise control for digging, lifting, swinging, and traveling. Boom and stick regeneration valves recycle oil flow, reducing fuel consumption and increasing cycle speed. Undercarriage The X-frame undercarriage provides extended service life. Track shoe widths range from 600 to 790 mm. Track gauge is 2,200 mm. Sealed and lubricated tracks reduce wear and noise. Each side has 7 track rollers and 2 carrier rollers. Boom and Stick The boom and stick are robotically welded for consistent quality. Heavy duty pins and bushings extend component life. Various boom and stick lengths are available for different applications. Operator Cab The ROPS certified cab has large glass areas for excellent visibility. The suspension seat reduces fatigue. Pilot operated levers require minimal effort. A monitoring system displays engine RPM, temperature, fuel level, and service reminders. Safety Features Safety features include hydraulic activation lever, full length firewall, ground level fuel cutoff switch, anti-slip plates, and reverse alarm. Maintenance Most service points are accessible from ground level. All filters are grouped for faster replacement. The radiator and oil cooler are side by side for easy cleaning. The 500 hour filter change interval reduces costs. Technology Product Link telematics reports machine location, hours, fuel usage, and maintenance alerts remotely via web. Applications General construction, road and bridge projects, utility installation, trenching, quarry work, demolition, material handling, and site preparation. Advantages Fuel efficiency, Japan built quality, ACERT technology for clean emissions, global Cat dealer network for parts and service. Summary The Cat 320D2 is a reliable 21-ton excavator for contractors worldwide. It delivers strong performance, operator comfort, and easy maintenance. For second-hand units, inspection reports and working videos are available.