Li Ning, a millennial excavator operator, shares his experience with the Longgong LG6060, which has been his trusted machine since 2008. A family tradition of operating machinery, especially with his father’s background with the Dongfanghong bulldozer, paved the way for Li Ning’s career. After receiving some basic training for a month, Li Ning took it upon himself to explore and master excavator operations and maintenance. Over time, he developed a deep interest in the industry, attending exhibitions and aiming to one day expand his fleet of excavators.
Purchase Details:
Li Ning purchased the Longgong LG6060 excavator in the latter half of 2008 through a financing plan from Longgong’s Henan dealer, Shengshi Xing. He made an initial down payment of 160,000 yuan and has since been paying it off over two years. While the payments are almost complete, Li Ning praises the dealer for being understanding and flexible during slower work periods. “Shengshi Xing is really considerate. When there was little work, they understood and didn’t pressure me for payment,” Li Ning notes.
Work Applications:
Li Ning mainly uses the excavator on construction sites and for agricultural land redevelopment. Tasks such as digging drainage ditches, leveling construction sites, and loading trucks are its primary applications.
Performance Efficiency:
According to Li Ning, the Longgong LG6060 performs decently in day-to-day work, but one downside is its relatively slow operation speed. While the performance is acceptable, the slower pace remains a point of dissatisfaction for him.
Machine Condition and Issues:
Since purchasing the excavator, Li Ning has encountered no major faults, although some minor issues did arise and were quickly addressed:

1. Engine: The engine has operated without any issues, achieving zero faults.
   
2. Hydraulic System: The hydraulic system has been mostly reliable. However, there was one instance of an oil leak from the multi-way valve, which was promptly fixed by the dealer who replaced the Parker hose at no cost. Since then, there have been no issues with the system.
   
3. Oil Level Sensor: The oil level sensor failed to display readings at one point. The dealer’s after-sales team quickly replaced it at no charge, and the issue was resolved, leaving the machine running smoothly.
   
4. Air Conditioning: The air conditioning did not work well initially, but after the dealer’s team added refrigerant, the cooling function improved, and it has worked fine since.
   

I have been using the Komatsu PC200-8 for three years now, and recently completed a 6000-hour maintenance. Below is a brief summary of my experience with the machine over the past three years.
Since I took delivery of the new machine from the dealer, I have been the primary operator. The machine’s performance has been generally stable, but there were a few key issues during its operation.
Major Faults and Repairs
The biggest issue occurred around 3681 hours when three out of six fuel injectors failed. After inspecting the machine, we determined that the problem was caused by poor fuel quality. I replaced the entire set of injectors, with each one costing 5960 yuan. This repair highlights the profit margin of service stations. Although the repair was expensive, it was necessary as I needed the machine operational immediately, so I opted for a direct repair from the service station.
Current Status and Usage
As of now, the machine is in good condition overall. However, the arm and bucket hydraulic cylinders have become heavily stained with oil. Despite multiple visits from the dealer’s after-sales team, no solution has been provided for this issue yet. The hydraulic oil temperature remains within normal limits, and the machine has not suffered any collisions or other major damage. The hydraulic oil was changed at 4950 hours, with the service station advising that it should be replaced at 5000 hours. The filter and oil changes are carried out as scheduled, and all parts replaced are original factory parts.
While there have been no other major failures, I am still in discussions with the dealer regarding the hydraulic cylinder issue, hoping for a resolution.
Conclusion
Overall, the Komatsu PC200-8 has performed reliably over the past three years, with only minor issues that have been promptly addressed. By adhering to the manufacturer’s recommended maintenance intervals, the machine continues to perform at a high level. I will continue to work with the dealer to resolve the issues with the hydraulic cylinders, and I hope for a satisfactory solution soon.
In the future, I will continue to monitor the machine’s performance and report any new issues or discoveries as they arise.

Korean brands have a knack for tapping into the needs of the Chinese market, leveraging their foreign image while offering competitive prices. Whether in home appliances, automobiles, or construction machinery, Korean brands, despite entering the Chinese market a bit later, have quickly climbed to the top. Brands like Samsung, LG, Hyundai, and Daewoo have become household names, and in the construction machinery sector, Doosan is one of the fastest-growing Korean brands in China.
It's now common to see Doosan excavators in construction sites across cities, with the brand enjoying a widespread presence. Among the most discussed models in forums are the DH225-9 and DH225-7, two versions of Doosan's flagship excavator. The DH225-9, as the latest generation, is still carving its way into the market, while the DH225-7 has already found its place in the second-hand market. However, both models continue to serve their respective markets with distinction. Here's a look at what users are saying about both models.
User Feedback on the DH225-9
Compared to the DH225-7 series, the DH225-9 comes with a German MAN engine, offering better performance in terms of walking speed, digging power, and rotation speed. However, this improvement comes with the trade-off of higher fuel consumption. The official fuel consumption is listed as 18 liters per hour, but many forum users report that the actual consumption tends to exceed this, with some even experiencing fuel usage of up to 23 liters per hour.
Here are the key points users have shared about the DH225-9:

• Engine and Performance: The DH225-9 is equipped with a 115KW engine, and its main pump is more powerful than that of the DH225-7. This makes the machine particularly effective at digging hard materials. Despite the heavy body, the machine offers stable and smooth operation.
  
• Operator Comfort and Experience: While the cabin space has not seen significant improvements compared to the DH225-7, it remains relatively cramped for the operator. The operation levers are thick and somewhat uncomfortable, and the response time for the throttle and actions is slower than expected.
  
• Fuel Consumption: Due to the German MAN engine, the DH225-9 consumes more fuel than its predecessor. In "fast mode," the fuel consumption is about 22.86 liters per hour, while in "economy mode," it drops to around 19.3 liters per hour.
  
• Pros: The DH225-9 provides excellent stability during operations, with strong digging power, especially for heavy-duty tasks. The battery is large enough to handle cold starts in winter, and the vehicle's frame is thicker, making it more durable.
  
• Cons: The primary downside of this machine is its fuel consumption, and the cramped operator cabin. Additionally, the control levers are thick and hard to handle, and the machine's rotation and arm movements are a bit slow.
  

• Work Efficiency: In a 180-degree digging task, the DH225-7 achieves a work volume of 303 cubic meters per hour, with fuel consumption of 24.9 liters per hour. In trenching tasks, the work volume is 460 cubic meters per hour, with a fuel consumption of 23.6 liters per hour.
  
• Performance: The DH225-7 has good operation speed and work efficiency. Despite being an older model, it still performs reliably with proper maintenance.
  
• Fuel Consumption: Compared to the DH225-9, the DH225-7 has lower fuel consumption. In economy mode, it consumes less fuel while maintaining acceptable performance.
  
• Second-Hand Market: The DH225-7 is still a popular choice in the second-hand market, especially for well-maintained models. A 2005 model typically costs around 350,000 CNY, while an 2008 model can go for around 450,000 CNY.
  

In this interview, we have the pleasure of speaking with "Excavator Man" Lao Tao. Lao Tao started his journey in the excavator business in 2005, beginning with a Shandong Huaxin agricultural wheeled excavator. Over the years, he has upgraded his equipment to include a SANY SY65C and a Caterpillar 305CR excavator. Lao Tao is also the village accountant and secretary, and after a busy day, he enjoys sharing his experiences on the forum. Today, we'll focus on his insights into the SANY SY65C mini excavator, which he frequently shares with fellow forum members.

Purchase Information

Lao Tao purchased his SANY SY65C excavator on November 19, 2008, from SANY Heavy Machinery's Anhui dealer, Hefei Xiangyuan Company. The total price was 370,000 CNY, and Lao Tao opted for a financing plan with a down payment of 109,000 CNY and a three-year repayment period. The package included 5,000 CNY worth of accessories. When choosing among various brands, including Komatsu PC60, Hitachi ZX60, Kubota KX161, and SANY SY65C, Lao Tao decided on the SANY model after test driving and observing the performance of SY65C in his local area. He was particularly impressed with the speed, fuel efficiency, and the reputation of the Hefei Xiangyuan dealership.

Working Conditions

Unlike some of the users from Beijing we’ve previously interviewed, Lao Tao’s excavator is mainly used in his hometown for projects like rural house foundation excavation, irrigation and water conservancy projects, and municipal construction. These tasks demand versatility, as the excavator needs to adapt to both heavy-duty and more intricate work.

Work Efficiency

The SANY SY65C has proven to be exceptionally efficient in daily tasks, such as grading, trenching, and loading. Lao Tao proudly notes that the machine works just as fast as many imported mini excavators, which has helped him accumulate a loyal customer base in his area.
Machine Performance & Issues
While the SY65C has generally performed well, Lao Tao mentioned a few minor issues that have been addressed over time:

• At 2,200 hours, one of the idler wheels was damaged. However, due to the busy workload, it wasn't immediately replaced, and it didn’t significantly affect machine performance, except for a louder noise when moving.
  
• The display screen was replaced for free by the dealer, likely due to a design issue.
  
• The fuel tank oil level sensor was replaced for free.
  
• The travel motor was also replaced at no charge.
  

The Caterpillar CAT 320C is a versatile medium-sized crawler excavator widely used in earthmoving, construction, mining, and roadwork projects. With its powerful engine system and optimized hydraulic technology, the 320C delivers outstanding work efficiency and fuel economy. The design focuses on enhancing operator comfort and work stability, ensuring high productivity while reducing operational costs. Whether for heavy-duty tasks or working in complex conditions, the CAT 320C reliably performs in various challenging environments.
Key Specifications

• Engine Model: C6.6 ACERT
  
• Engine Power: 123 kW (165 hp)
  
• Operating Weight: 20,500 kg
  
• Boom Length: 3,250 mm
  
• Bucket Capacity: 0.9 m³
  
• Max Digging Depth: 6,540 mm
  
• Max Reach: 9,450 mm
  
• Max Dump Height: 6,700 mm
  
• Track Width: 600 mm
  
• Fuel Tank Capacity: 330 L
  
• Hydraulic Tank Capacity: 240 L
  
• Max Drawbar Pull: 205 kN
  
• Max Lifting Force: 17.2 kN
  

• Powerful Engine System: The CAT 320C is powered by the C6.6 ACERT engine, which provides excellent power output and fuel efficiency, making it suitable for high-load applications while ensuring stability and efficiency during long hours of operation.
  
• Optimized Hydraulic System: The excavator features advanced hydraulic technology, providing rapid operational response and high efficiency for tasks like digging, loading, and handling, while minimizing fuel consumption.
  
• Comfortable Operator Environment: The 320C's cabin is designed with spaciousness and comfort in mind, featuring air conditioning, adjustable seats, and hydraulic joysticks, ensuring comfort during extended work hours.
  
• Exceptional Stability: The reinforced undercarriage and heavy-duty track system ensure the 320C remains stable, even in complex terrains, providing excellent precision and efficiency during operations.
  
• Environmental Performance: The 320C complies with the latest emission standards, utilizing eco-friendly technologies to reduce emissions and improve fuel efficiency, supporting sustainable operations.
  

The Doosan DH150LC-7 is a high-performance medium-sized crawler excavator designed to handle a variety of demanding tasks, including earthmoving, construction, and mining operations. Equipped with advanced engine and hydraulic systems, the DH150LC-7 offers powerful performance while maintaining excellent fuel efficiency, making it ideal for long-duration, high-intensity work. With superior stability, operator comfort, and environmental performance, it is an ideal machine for large-scale and complex projects.
Key Specifications

• Engine Model: Cummins QSB6.7
  
• Engine Power: 129 kW (173 hp)
  
• Operating Weight: 15,300 kg
  
• Boom Length: 2,750 mm
  
• Bucket Capacity: 0.8 m³
  
• Max Digging Depth: 6,260 mm
  
• Max Reach: 9,480 mm
  
• Max Dump Height: 6,530 mm
  
• Track Width: 600 mm
  
• Fuel Tank Capacity: 300 L
  
• Hydraulic Tank Capacity: 180 L
  
• Max Drawbar Pull: 157 kN
  
• Max Lifting Force: 13.6 kN
  

• Efficient Power System: The DH150LC-7 is powered by the Cummins QSB6.7 engine, delivering reliable power output and excellent fuel efficiency, making it suitable for various high-load working environments while maintaining high efficiency over long periods.
  
• Optimized Hydraulic System: Equipped with advanced hydraulic technology, the DH150LC-7 provides fast response times and high efficiency, making it ideal for precision earthworks and demanding tasks that require high productivity.
  
• Operator Comfort: The spacious cabin is equipped with air conditioning, adjustable seats, and hydraulic joysticks, ensuring a comfortable working environment and reducing operator fatigue during long working hours.
  
• Superior Stability: The reinforced undercarriage and high-strength tracks provide excellent stability, ensuring accurate performance even in harsh working conditions and complex terrains.
  
• Environmental Performance: The DH150LC-7 complies with international emission standards and uses eco-friendly technologies to reduce emissions, improve fuel economy, and support green operations.
  

The Caterpillar Cat 320D2 is a powerful and versatile medium-sized crawler excavator, widely used in earthmoving, mining, construction, and roadwork projects. With its efficient power system, optimized hydraulic technology, and excellent fuel economy, the 320D2 offers high productivity while reducing operating costs. Its comfortable operator environment and superior stability ensure that operators can efficiently and safely complete heavy-duty tasks. Whether working in complex terrains or harsh conditions, the Cat 320D2 delivers outstanding performance.
Key Specifications

• Engine Model: C6.4 ACERT
  
• Engine Power: 129 kW (173 hp)
  
• Operating Weight: 22,300 kg
  
• Boom Length: 3,500 mm
  
• Bucket Capacity: 1.0 m³
  
• Max Digging Depth: 6,610 mm
  
• Max Reach: 9,680 mm
  
• Max Dump Height: 6,830 mm
  
• Track Width: 600 mm
  
• Fuel Tank Capacity: 400 L
  
• Hydraulic Tank Capacity: 280 L
  
• Max Drawbar Pull: 224 kN
  
• Max Lifting Force: 18.0 kN
  

• Efficient Power System: The Cat 320D2 is powered by the C6.4 ACERT engine, delivering powerful performance while optimizing fuel efficiency, making it suitable for various high-load conditions and ensuring long-term stability in operation.
  
• Advanced Hydraulic System: Equipped with Caterpillar's advanced hydraulic technology, the 320D2 offers enhanced operational response and digging efficiency, reducing cycle times and fuel consumption while improving productivity.
  
• Operator Comfort: The spacious cabin is designed to provide excellent visibility and comfort, featuring air conditioning, an adjustable seat, and hydraulic joysticks. This ensures that operators remain comfortable during long hours of operation.
  
• Superior Stability: With its reinforced undercarriage and robust track system, the 320D2 maintains excellent stability, even in complex terrains, ensuring precise operations and enhanced safety during work.
  
• Environmental Performance: The 320D2 complies with the latest emission standards and utilizes Caterpillar's eco-friendly technology to reduce emissions, enhancing fuel efficiency and supporting environmentally sustainable operations.
  

The Doosan DH220LC-7 is a high-performance medium-sized crawler excavator, widely used in construction, mining, demolition, and earthmoving projects. Equipped with an advanced engine and hydraulic system, the DH220LC-7 delivers exceptional performance across various working conditions. Its design optimizes both power and fuel efficiency while minimizing emissions to meet global environmental standards. With its superior stability and comfortable working environment, the DH220LC-7 is the ideal choice for heavy-duty and long-duration tasks.
Key Specifications

• Engine Model: Cummins QSB6.7
  
• Engine Power: 129 kW (173 hp)
  
• Operating Weight: 22,000 kg
  
• Boom Length: 3,290 mm
  
• Bucket Capacity: 0.9 m³
  
• Max Digging Depth: 6,660 mm
  
• Max Reach: 9,750 mm
  
• Max Dump Height: 6,630 mm
  
• Track Width: 600 mm
  
• Fuel Tank Capacity: 340 L
  
• Hydraulic Tank Capacity: 225 L
  
• Max Drawbar Pull: 212 kN
  
• Max Lifting Force: 18.0 kN
  

• Efficient Power System: The DH220LC-7 is powered by the Cummins QSB6.7 engine, providing strong power output and excellent fuel efficiency, ensuring stable performance under heavy-load conditions.
  
• Optimized Hydraulic System: Equipped with an advanced hydraulic system, it delivers rapid operational responses, making it highly efficient for excavation, loading, and material handling tasks, while reducing energy consumption.
  
• Operator Comfort: The spacious cabin features air conditioning, adjustable seats, and hydraulic joysticks, enhancing operator comfort and reducing fatigue during long working hours.
  
• Superior Stability: The reinforced undercarriage and high-strength tracks provide excellent stability, ensuring precise operation even in complex terrains and harsh working conditions.
  
• Environmental Performance: The DH220LC-7 meets global emission standards, utilizing eco-friendly technologies to reduce environmental impact and support sustainable operations.
  

The Kobelco SK210 is a high-performance medium-sized crawler excavator widely used in construction, mining, roadwork, and demolition projects. Equipped with an excellent power system, advanced hydraulic technology, and outstanding fuel economy, the SK210 provides reliable performance and high efficiency in various complex working environments. This model focuses on operator comfort, stability, and environmental considerations, making it an ideal choice for large-scale projects.
Key Specifications

• Engine Model: ISUZU 4HK1X
  
• Engine Power: 119 kW (160 hp)
  
• Operating Weight: 21,600 kg
  
• Boom Length: 3,470 mm
  
• Bucket Capacity: 1.0 m³
  
• Max Digging Depth: 6,700 mm
  
• Max Reach: 9,800 mm
  
• Max Dump Height: 6,760 mm
  
• Track Width: 600 mm
  
• Fuel Tank Capacity: 350 L
  
• Hydraulic Tank Capacity: 240 L
  
• Max Drawbar Pull: 216 kN
  
• Max Lifting Force: 17.5 kN
  

• Efficient Power System: The Kobelco SK210 is powered by the ISUZU 4HK1X engine, delivering strong power output and excellent fuel efficiency, ensuring stable performance in high-load conditions.
  
• Advanced Hydraulic System: The SK210 is equipped with an optimized hydraulic system, allowing it to complete large-scale earthworks and loading tasks quickly while maintaining low energy consumption and high work efficiency.
  
• Operator Comfort: The cabin is spacious and equipped with air conditioning, an adjustable seat, and joysticks, ensuring comfort and precise control during long hours of operation.
  
• Superior Stability: The reinforced undercarriage and high-strength tracks provide superior stability, ensuring safe and efficient operation even in challenging terrains and harsh working conditions.
  
• Environmental Performance: The SK210 meets international emission standards, using eco-friendly technologies to reduce emissions and minimize environmental impact, supporting sustainable operations.
  

The Kobelco SK210LC is a high-performance medium-sized crawler excavator, widely used in construction, mining, roadworks, and demolition projects. With its powerful engine, superior hydraulic performance, and excellent fuel efficiency, the SK210LC provides stable and reliable performance in a variety of complex working environments. The design is focused on improving operational efficiency, ensuring operator comfort, and maintaining safety, making it a highly reliable machine for various industries.
Key Specifications

• Engine Model: ISUZU 4HK1X
  
• Engine Power: 119 kW (160 hp)
  
• Operating Weight: 21,600 kg
  
• Boom Length: 3,470 mm
  
• Bucket Capacity: 1.0 m³
  
• Max Digging Depth: 6,700 mm
  
• Max Reach: 9,800 mm
  
• Max Dump Height: 6,760 mm
  
• Track Width: 600 mm
  
• Fuel Tank Capacity: 350 L
  
• Hydraulic Tank Capacity: 240 L
  
• Max Drawbar Pull: 216 kN
  
• Max Lifting Force: 17.5 kN
  

• Powerful Engine: The Kobelco SK210LC is equipped with the ISUZU 4HK1X engine, delivering excellent power output and fuel efficiency. It is designed to handle high-load conditions while ensuring stable performance.
  
• Efficient Hydraulic System: The excavator features an advanced hydraulic system that allows for rapid response and increased operational efficiency, making quick work of excavation and loading tasks.
  
• Operator Comfort: The spacious cabin is designed with ergonomic seats and hydraulic joysticks, reducing operator fatigue and enhancing comfort, even during long hours of operation.
  
• Exceptional Stability: The reinforced undercarriage and high-strength tracks provide superior stability, ensuring precise operations even on challenging terrains and in harsh working conditions.
  
• Environmental Performance: The SK210LC meets international emission standards, using advanced engine and eco-friendly technologies to reduce emissions and support green operations.