The Sumitomo SH700LHD-5B is a large hydraulic excavator designed for heavy-duty applications such as mining, earthworks, and large infrastructure projects. Equipped with a high-efficiency and energy-saving engine, it delivers powerful digging force and excellent durability. Featuring an advanced hydraulic system and intelligent control technology, it ensures efficient and stable operation. The cab is comfortable and equipped with comprehensive safety features, making it a flagship model in the heavy-duty excavator market.

• Engine Model: Sumitomo SA6D140E-5B
  
• Engine Power: 351 kW (approximately 471 hp)
  
• Operating Weight: Approximately 71,400 kg
  
• Bucket Capacity: 3.2 cubic meters (standard bucket)
  
• Maximum Digging Depth: 7,810 mm
  
• Maximum Digging Height: 11,400 mm
  
• Maximum Dumping Height: 7,960 mm
  
• Maximum Digging Radius: 12,200 mm
  
• Swing Speed: 8.2 rpm
  
• Travel Speed: 5.5 km/h
  
• Gradeability: 35°
  
• Track Shoe Width: 700 mm
  
• Minimum Ground Clearance: 650 mm
  
• Overall Length (with bucket): 14,350 mm
  
• Overall Width: 3,480 mm
  
• Overall Height: 3,520 mm
  
• Fuel Tank Capacity: 680 liters
  
• Hydraulic System Pressure: Approximately 34 MPa
  
• Cab: Spacious and comfortable, equipped with air conditioning, shock-absorbing seat, and advanced control panel, offering wide visibility and ease of operation
  

The XCMG XE60GA is a medium-sized hydraulic excavator equipped with a China IV-compliant engine, offering strong power and energy efficiency while meeting environmental standards. It is suitable for earthmoving, foundation construction, pipeline laying, and various other engineering applications. The machine features a robust and durable structure, flexible operation, and a comfortable cabin to enhance operator experience. It is a highly efficient and reliable machine for small to medium-sized projects.

• Engine Model: Yuchai 4TNV98-ZPBG (China IV emission compliant)
  
• Engine Power: 43.2 kW (58.7 hp)
  
• Operating Weight: Approximately 5800 kg
  
• Bucket Capacity: 0.22 cubic meters
  
• Maximum Digging Depth: 5500 mm
  
• Maximum Digging Height: 8680 mm
  
• Maximum Dumping Height: 6210 mm
  
• Maximum Digging Radius: 8600 mm
  
• Swing Speed: 11 rpm
  
• Travel Speed: 5.5 km/h
  
• Gradeability: 35°
  
• Track Shoe Width: 400 mm
  
• Minimum Ground Clearance: 450 mm
  
• Overall Length (with bucket): 9000 mm
  
• Overall Width: 2500 mm
  
• Overall Height: 2930 mm
  
• Fuel Tank Capacity: 120 liters
  
• Hydraulic System Pressure: Approximately 32 MPa
  
• Cab: Air-conditioned, equipped with a spacious and comfortable seat, easy-to-use controls, and wide visibility
  

The SANY SY26U is a compact hydraulic excavator designed for small to medium-sized projects such as urban construction, landscaping, and pipeline installation. It features a China IV-compliant engine that provides strong power, flexible operation, and energy efficiency while meeting environmental standards. Its compact structure allows it to work efficiently in confined spaces, with easy maintenance, making it a versatile and popular choice among users.

• Engine Model: Mitsubishi 4D34-4D34T (China IV emission compliant)
  
• Engine Power: 18.5 kW (25 hp)
  
• Operating Weight: Approximately 2600 kg
  
• Bucket Capacity: 0.08 cubic meters
  
• Maximum Digging Depth: 3900 mm
  
• Maximum Digging Height: 5730 mm
  
• Maximum Dumping Height: 4100 mm
  
• Maximum Digging Radius: 6150 mm
  
• Swing Speed: 9.5 rpm
  
• Travel Speed: 2.6 km/h
  
• Gradeability: 30°
  
• Track Shoe Width: 230 mm
  
• Minimum Ground Clearance: 320 mm
  
• Overall Length (with bucket): 5570 mm
  
• Overall Width: 1900 mm
  
• Overall Height: 2550 mm
  
• Fuel Tank Capacity: 40 liters
  
• Hydraulic System Pressure: Approximately 16 MPa
  
• Cab: Air-conditioned, equipped with a comfortable seat and user-friendly controls
  

The Hengtian Jiuwu JV65-7 is a compact crawler hydraulic excavator designed for urban construction, farmland irrigation, road maintenance, and small earthmoving projects. It features flexible operation, stable performance, fuel efficiency, and easy maintenance. With excellent maneuverability and cost-effectiveness, it is well-suited for a wide range of complex working conditions in China and is highly favored by operators.

• Operating weight: 6,000 kg
  
• Standard bucket capacity: 0.25 m³
  
• Overall length: 5,830 mm
  
• Overall width: 2,050 mm
  
• Overall height (to cab top): 2,650 mm
  
• Track length on ground: 2,300 mm
  
• Track shoe width: 400 mm
  
• Track gauge: 1,600 mm
  
• Minimum ground clearance: 350 mm
  
• Tail swing radius: 1,650 mm
  

• Maximum digging height: 5,760 mm
  
• Maximum dumping height: 4,070 mm
  
• Maximum digging depth: 3,800 mm
  
• Maximum vertical digging depth: 3,400 mm
  
• Maximum digging radius: 6,060 mm
  
• Minimum swing radius: 1,870 mm
  

• Arm digging force: 35 kN
  
• Bucket digging force: 48 kN
  
• Travel speed (high/low): 4.5 / 2.5 km/h
  
• Swing speed: 11 rpm
  
• Maximum traction force: 55 kN
  
• Gradeability: 70% (approx. 35°)
  

• Model: Yanmar 4TNV94L
  
• Rated power: 36.2 kW / 2,200 rpm
  
• Displacement: 3.05 L
  
• Number of cylinders: 4
  
• Fuel system: Direct injection diesel engine
  

• Main pump type: Variable displacement piston pump
  
• Maximum flow rate: 2 × 65 L/min
  
• Main valve: Multi-way valve
  
• Auxiliary hydraulic circuit: Supported
  
• Travel motors: 2 units
  
• Swing motor: 1 unit
  

• Fuel tank capacity: 120 L
  
• Hydraulic tank capacity: 80 L
  
• Engine oil capacity: 12 L
  
• Coolant capacity: 10 L
  

The Komatsu PC2000-8 backhoe excavator is a 200-ton class large hydraulic mining excavator, designed for large-scale open-pit mining, overburden removal, material loading, and massive earthmoving operations. It features Komatsu’s proprietary high-power engine and efficient hydraulic system, delivering outstanding performance, durability, and productivity even under the harshest working conditions. It is a trusted workhorse for high-efficiency mining operations.

• Operating weight (backhoe): 202,000 kg
  
• Overall length (transport): 14,170 mm
  
• Overall width (transport): 7,150 mm
  
• Overall height (to cab roof): 7,750 mm
  
• Track on ground: 5,960 mm
  
• Overall track length: 8,990 mm
  
• Shoe width: 650 mm (optional 800 mm)
  
• Track gauge: 5,800 mm
  
• Minimum ground clearance: 1,170 mm
  
• Tail swing radius: 6,570 mm
  

• Maximum digging height: 15,020 mm
  
• Maximum dumping height: 9,940 mm
  
• Maximum digging depth: 7,790 mm
  
• Maximum vertical wall digging depth: 6,380 mm
  
• Maximum digging reach: 14,260 mm
  
• Minimum swing radius: 6,570 mm
  

• Standard bucket capacity (backhoe): 12 m³
  
• Bucket digging force: 672 kN
  
• Arm digging force: 578 kN
  
• Travel speed (high/low): 2.1 / 1.5 km/h
  
• Swing speed: 4.3 rpm
  
• Maximum drawbar pull: 854 kN
  
• Gradeability: 70% (35°)
  

• Model: Komatsu SDA12V160E-2
  
• Displacement: 60.2 L
  
• Rated power: 728 kW (976 HP) / 1,800 rpm
  
• Max torque: Not specified (may vary by market version)
  
• Number of cylinders: 12, V-type
  

• Main pump type: Variable displacement piston pump
  
• Max flow rate: 4 × 563 L/min
  
• Main control valve: Multi-way valve
  
• Auxiliary hydraulic circuit: Optional
  
• Travel motors: 2 units
  
• Swing motors: 2 units
  

• Fuel tank: 3,960 L
  
• Hydraulic tank: 1,650 L
  
• Engine oil: 200 L
  
• Coolant: 200 L
  
• Swing device oil: 2 × 70 L
  
• Travel reduction gear oil: 2 × 40 L
  

The CASE CX490C is a 50-ton class crawler hydraulic excavator, purpose-built for large-scale earthmoving, quarry operations, and demanding mining environments. It features a high-performance engine and an advanced hydraulic system, delivering outstanding digging force and operational efficiency. With robust power, excellent stability, and proven durability, the CX490C is an ideal choice for medium to large construction projects.

• Operating Weight: 48,800 kg
  
• Overall Length (Transport): 11,570 mm
  
• Overall Width: 3,350 mm
  
• Overall Height (to cab top): 3,480 mm
  
• Track Length on Ground: 4,620 mm
  
• Total Track Length: 5,700 mm
  
• Shoe Width: 600 mm (optional: 700 mm, 800 mm)
  
• Track Gauge: 2,740 mm
  
• Minimum Ground Clearance: 500 mm
  
• Tail Swing Radius: 3,520 mm
  

• Maximum Digging Height: 10,340 mm
  
• Maximum Dumping Height: 7,180 mm
  
• Maximum Digging Depth: 7,470 mm
  
• Maximum Vertical Digging Depth: 6,700 mm
  
• Maximum Digging Radius: 11,240 mm
  
• Minimum Swing Radius: 4,390 mm
  

• Standard Bucket Capacity: 2.1 m³
  
• Bucket Digging Force: 269 kN
  
• Arm Digging Force: 214 kN
  
• Travel Speed (High/Low): 5.4 / 3.2 km/h
  
• Swing Speed: 8.0 rpm
  
• Maximum Drawbar Pull: 360 kN
  
• Gradeability: 70% (35°)
  

• Model: ISUZU AH-6HK1X
  
• Displacement: 7.79 L
  
• Rated Power: 270 kW @ 1,800 rpm
  
• Maximum Torque: 1,260 Nm
  

• Main Pump Type: Variable Displacement Axial Piston Pump
  
• Maximum Flow: 2 × 370 L/min
  
• Main Control Valve: Multi-way valve
  
• Auxiliary Hydraulic Circuit: Available
  
• Travel Motors: 2 units
  
• Swing Motor: 1 unit
  

• Fuel Tank: 650 L
  
• Hydraulic Tank: 320 L
  
• Engine Oil: 35 L
  
• Coolant: 38 L
  
• Swing Drive Oil: 2 × 8 L
  
• Travel Drive Oil: 2 × 10 L
  

The GEHL Z55 is a 5-ton class zero-tail swing hydraulic crawler excavator, designed for urban construction, road maintenance, agricultural improvement, and operations in confined spaces. This machine is compact, maneuverable, comfortable to operate, stable in performance, and easy to maintain. It meets users' demands for high efficiency and versatility, making it an ideal choice for small to medium-sized excavation projects.

• Transport length: 5,475 mm
  
• Transport width: 1,960 mm
  
• Transport height: 2,540 mm
  
• Minimum ground clearance: 335 mm
  
• Track length: 2,420 mm
  
• Track shoe width (single side): 400 mm
  
• Track gauge: 1,560 mm
  
• Upper structure width: 1,960 mm
  
• Tail swing radius: 980 mm
  
• Operating weight: 5,400 kg
  

• Maximum digging height: 5,530 mm
  
• Maximum dumping height: 3,830 mm
  
• Maximum digging depth: 3,530 mm
  
• Maximum vertical digging depth: 3,090 mm
  
• Maximum digging radius: 6,030 mm
  
• Minimum swing radius: 2,520 mm
  

• Standard bucket capacity: 0.15 m³
  
• Bucket breakout force: 40.1 kN
  
• Arm digging force: 26.7 kN
  
• Travel speed (high/low): 4.2 / 2.5 km/h
  
• Swing speed: 9.1 rpm
  
• Maximum traction force: 52.9 kN
  
• Gradeability: 30°
  

• Model: YANMAR 4TNV88
  
• Rated power: 34.3 kW @ 2,200 rpm
  
• Displacement: 2.19 L
  
• Number of cylinders: 4 in-line
  
• Maximum torque: 137.5 Nm
  

• Main pump type: Variable displacement piston pump
  
• Maximum flow: 2 × 55.7 L/min
  
• Main control valve: Multi-way directional valve
  
• Pilot system: Load sensing
  
• Travel motors: 2 units
  
• Swing motor: 1 unit
  

• Fuel tank: 67 L
  
• Hydraulic oil tank: 70 L
  
• Engine oil: 8.5 L
  
• Coolant: 6 L
  
• Swing reduction gear oil: 1.2 L
  
• Travel reduction gear oil: 2 × 1.5 L
  

The Liugong CLG990F is a large crawler hydraulic excavator designed for mining, heavy earthmoving, and major construction projects. It emphasizes high power output, structural durability, and operational stability. Equipped with a high-performance engine and advanced hydraulic system, it provides customers with an efficient, reliable, and cost-effective solution for the most demanding jobs.

• Overall length (transport): 13,210 mm
  
• Overall width (transport): 4,410 mm
  
• Overall height (transport): 4,945 mm
  
• Minimum ground clearance: 880 mm
  
• Track length: 6,320 mm
  
• Track shoe width: 650 mm
  
• Total track width: 4,410 mm
  
• Upperstructure width: 3,600 mm
  
• Tail swing radius: 4,400 mm
  

• Max digging height: 12,340 mm
  
• Max dumping height: 8,100 mm
  
• Max digging depth: 7,830 mm
  
• Max vertical digging depth: 5,330 mm
  
• Max digging radius: 11,800 mm
  
• Min swing radius: 5,050 mm
  

• Operating weight: 90,000 kg
  
• Standard bucket capacity: 4.5 m³
  
• Max digging force (arm): 370 kN
  
• Max digging force (bucket): 480 kN
  
• Travel speed: 3.2 / 2.2 km/h
  
• Swing speed: 6.8 rpm
  
• Max drawbar pull: 658 kN
  
• Gradeability: 35°
  

• Engine model: Cummins QSK19
  
• Rated power: 447 kW @ 2000 rpm
  
• Displacement: 19 L
  
• Cylinders: 6 in-line
  
• Max torque: 2508 Nm
  

• Main pump: 2 variable displacement piston pumps
  
• Max flow: 2 × 480 L/min
  
• Main control valve: multi-way valve
  
• Pilot system: load sensing
  
• Travel motors: 2 units
  
• Swing motors: 2 units
  

• Fuel tank: 1,250 L
  
• Hydraulic tank: 550 L
  
• Coolant: 85 L
  
• Engine oil: 75 L
  
• Swing gearbox: 2 × 12 L
  
• Travel gearbox: 2 × 20 L
  

Today, I’d like to open up a discussion about some key differences between the excavator industry in China and in developed countries, especially in Europe and North America. These differences are real and highlight the areas where China’s industry still has room to grow. By recognizing this gap, we can find motivation to keep improving and help China’s excavator sector reach a more advanced level.

When we talk about earthmoving machinery today, images of massive excavators, bulldozers, and mining shovels often come to mind. But few people know that the roots of these powerful machines trace back nearly two centuries — to a remarkable invention known as the steam shovel.

• The power system, which drives all motion;
  
• The undercarriage or traveling system, which moves the machine;
  
• The working implement, which actually digs, pushes, or lifts material.
  

• Their swing range was limited and partly manual.
  
• Steam engines were underpowered, so digging force and bucket capacity were modest.
  
• Frequent coal and water refills were needed.
  
• Workers had to keep laying new tracks to reposition the machine.
  

• Steam engines grew more powerful.
  
• Booms and dipper arms became longer.
  
• Buckets increased in size, and machines became bigger and heavier overall.