Kubota is widely recognized for its production of compact excavators, and many are familiar with its rice harvesters in southern China. However, few know that Kubota ranks as the leading global brand in small excavators, with its compact machines consistently topping global sales charts. In the Chinese market, Kubota offers a wide range of models, including the U15, KX135, KX155, KX161, and KX185. Today, we will explore one of its 6-ton class flagship models, the KX161.
Striking Appearance
Apart from the KX185, Kubota’s excavators in the Chinese market sport a vibrant blue paint that gives them a bright and eye-catching appearance.
Exquisite Craftsmanship
Having experienced many excavators, I couldn't help but admire the fine craftsmanship of Kubota’s bodywork and cabin interior. The attention to detail in Kubota’s manufacturing is exceptional, and the difference between domestic and international brands is clearly noticeable.
Unique Wide Tracks
Unlike most 6-ton excavators, the KX161 is equipped with an unusually wide 600mm track. This distinctive feature offers several advantages, which I will explain in more detail shortly. But for now, let's take a look at these "big feet."
Three Key Features

1. Zero Tail Swing (No Tail Overhang)
   The Kubota KX161 features a zero tail swing design, meaning the upper body of the machine rotates without extending beyond the width of the tracks. This is especially beneficial in narrow spaces, allowing the excavator to operate in confined areas without worrying about the tail overhanging.
   
2. Arm Side Shift
   The KX161 is equipped with a side-shift arm mechanism, allowing it to perform digging operations along tight spaces, such as near walls or fences, without the need to reposition the entire machine. Coupled with the zero tail swing, it’s ideal for operations in constrained environments.
   
3. 600mm Ultra-Wide Tracks
   Typically, 450mm tracks are standard on 6-ton excavators, but the KX161 is equipped with 600mm tracks—commonly found on 20-ton models. This unique design provides better stability, especially during tasks like dredging or working in soft ground. While smaller excavators may get stuck, the KX161 performs reliably in such conditions.
   

1. Automatic Idle = Fuel Efficiency
   When the joystick is idle for more than 4 seconds, the engine automatically switches to idle mode. Once the joystick is moved again, the engine instantly returns to its previous speed, conserving fuel during inactivity.
   
2. Kubota Intelligent Control System (Digital Display)
   The system displays key data such as operational hours, fuel level, water temperature, and engine RPM. Any abnormalities are instantly highlighted, allowing the operator to monitor machine performance closely. The system also records fault detection information, which can be used for easier troubleshooting.
   
3. Easy Registration
   In the event of a lost key, simply insert the "registration key" (red key) followed by the "sub-key" (black key) to register a new one. The lost key will no longer function, enhancing security.
   
4. Simple Operation
   The Kubota KX161 uses a single key system for starting, door locks, and fuel tank covers. No special procedure is required—just insert and turn the key as usual.
   
5. Security Anti-Theft
   If a non-registered key is used, the engine will not start. The security system immediately activates, triggering an alarm if an unauthorized attempt is made.
   

1. Advanced Hydraulic System
   Kubota’s hydraulic system adjusts the oil flow based on joystick movements, ensuring that the correct amount of hydraulic fluid is delivered regardless of load size. This ensures smooth operation and minimizes wasted energy, allowing for precise movements and simultaneous operations.
   
2. Genuine Kubota Engine
   Kubota is one of the few manufacturers that produces its own engines. The KX161 is powered by the Kubota V2403-M engine, which offers 47 horsepower. This clean engine meets U.S. EPA emissions standards and performs reliably even in temperatures as low as -15°C. The low-noise fan also contributes to a quieter operation, making it an environmentally friendly choice.
   

1. Easy Daily Inspection
   The KX161 is designed for convenience with easy access for daily checks.
   
2. Dual-Side Opening Engine Cover
   The engine cover opens easily without tools. Both the right and rear panels can be removed for quick access to the engine and fuel system for maintenance.
   
3. Simple Maintenance
   With a few minutes of effort, the operator can remove the side and rear covers for easy inspection and maintenance of internal components.
   

In the picturesque region of Ba Yu, known for its talented people and abundant resources, Mr. Ning is one of the many outstanding individuals who has risen from humble beginnings.
In 2007, driven by the dream of stepping out of the mountains and forging a better future, Mr. Ning embarked on a journey to learn excavator driving skills. Years of hard work and persistence allowed him to not only master the driving techniques but also gain extensive experience in the construction machinery industry. This solid foundation sparked an entrepreneurial ambition that would grow over time.

   

A Leap Into Entrepreneurship
With a deep understanding of construction machinery and sharp market insight, Mr. Ning identified the potential in the piling machine industry, a growing field with substantial profitability. In early 2019, he made a decisive move and purchased a LiuGong 600 piling machine, founding his own company around it. This high-performance machine quickly became a cornerstone of his business, playing a key role in local river channel rehabilitation projects and helping to lay a solid foundation for the company's growth.
Expanding Business and Upgrading Equipment
As the company grew and accumulated more clients, Mr. Ning made further investments in 2020, purchasing two LiuGong 700 piling machines. These advanced machines enhanced the company's construction capabilities and provided much-needed support in training specialized personnel for solar pile projects. Thanks to his rich experience and expert techniques, he successfully undertook and completed multiple solar pile projects, garnering widespread acclaim from clients.
Praise for Equipment Performance
Mr. Ning spoke highly of LiuGong equipment: “The LiuGong piling machines are incredibly versatile and can be used in a variety of conditions. The high-precision positioning system ensures that each solar pile is accurately driven to the designated position. The machines are efficient, flexible, and can easily handle different soil types and water flow conditions, demonstrating excellent stability and high productivity.”
Company Growth and Industry Recognition
In an effort to further improve the company's qualifications and expand its business, Mr. Ning purchased more than ten additional solar pile piling machines and acquired an engineering company. These moves significantly strengthened the company's position in the industry, helping it to establish a strong reputation and brand image. As a result, his business grew rapidly and enjoyed a peak period of success.
The Reliability of LiuGong Equipment
Looking back on his journey, Mr. Ning expressed his gratitude: “LiuGong's high-performance machinery has played a crucial role in my business. With the support of these advanced tools, I am able to face every challenge with confidence. Whether dealing with complex construction environments or overcoming difficulties, I can rely on these machines to ensure every project is completed on time and with excellent quality. LiuGong has truly been my strongest partner and support throughout my career.”
Conclusion
Mr. Ning’s entrepreneurial journey, driven by his keen industry insights and careful selection of equipment, has been both steady and fulfilling. LiuGong's efficient machines have undoubtedly played a key role in his success, providing the strong foundation needed to stand out in a competitive market. Today, his business not only holds a solid place in the industry but is also well-positioned for future growth and success.

The JCB 8056 mini excavator has proven itself as a robust and reliable machine for various construction and excavation tasks. Known for its European design and high-performance features, the 8056 has gained recognition in the market for its efficiency and ease of use. Below is a closer look at the key specifications and features of the JCB 8056 mini excavator.
Basic Specifications of the JCB 8056 Mini Excavator

• Maximum Operating Weight: 5,740 kg
  
• Engine Power: 41 kW
  
• Standard Bucket Capacity: 0.22 m³
  
• Boom / Arm Length: 3,000 mm / 1,500 mm
  
• Maximum Arm Digging Force: 27.3 kN
  
• Maximum Bucket Digging Force: 41.6 kN
  
• Track Width: 400 mm
  

1. European Brand with Reliable Performance
   As a trusted European brand, JCB offers a machine known for its solid performance and durability.
   
2. Mature Model with Proven Success
   The 8056 has been in use across many provinces and cities for several years, demonstrating reliability across various working conditions.
   
3. Isuzu Engine: Powerful, Economical, and Reliable
   Powered by an Isuzu 41G1 diesel engine, this mini excavator offers excellent power, high reliability, and economic fuel consumption. It is also equipped with a dual-stage fuel filtration system to suit local fuel conditions.
   
4. German-Imported Rexroth Hydraulic System
   The 8056 uses a high-quality Rexroth hydraulic pump and valve system, ensuring precise and dependable operation.
   
5. Optimized Structural Design for Durability
   The machine features a fully optimized structure to ensure long-lasting performance. The box-type undercarriage increases the strength and rigidity, improving the overall lifespan of the machine.
   
6. Comfortable and Safe Operational Environment
   The spacious cabin is equipped with a fully adjustable suspension seat, providing maximum comfort for operators. The cabin offers excellent visibility, low noise, and low vibration, ensuring a safe and productive working environment.
   
7. Easy Maintenance and Accessibility
   All components are easily accessible, making maintenance and repairs straightforward. This feature reduces downtime and ensures the machine remains in top condition.
   
8. High Efficiency and Performance
   The JCB 8056 is known for its high efficiency, capable of digging deep, working quickly, lifting high, and rotating fast, making it a versatile choice for a variety of tasks.
   

• Engine
  The 8056 is powered by the Isuzu 41G1, a 55-horsepower diesel engine that delivers impressive power and efficiency. It is designed to handle the rigors of daily work while keeping fuel consumption in check. The two-stage fuel filtration system enhances the engine's reliability, especially in areas with varying fuel quality.
  
• Hydraulic System
  The hydraulic system of the 8056 is equipped with high-performance, reliable components that ensure smooth and powerful operation. The hydraulic oil cooler and engine cooler are arranged in parallel for excellent heat dissipation, contributing to longer engine life and better performance.
  
• Boom and Arm
  The machine's boom and arm are reinforced with three layers of welding to enhance durability and extend the lifespan of these critical components. The design ensures that the digging end is capable of handling heavy-duty work without compromising longevity.
  
• Cabin Design
  The cabin of the JCB 8056 is ergonomically designed with spacious seating and advanced controls. It features air conditioning for both heating and cooling, a full 360-degree view for enhanced safety, and reduced vibration and noise, ensuring operators remain comfortable during long shifts.
  
• Swing and Stability
  The mini excavator’s compact tail swing allows for stable operation in confined spaces without sacrificing flexibility. It is particularly advantageous for projects where maneuverability is crucial.
  
• Maintenance and Repair
  The design of the JCB 8056 allows for easy maintenance with components like the hydraulic pump and valve system being highly accessible for repairs and servicing. The full-frame chassis ensures durability while simplifying upkeep.
  
• Other Features
  The excavator also comes with a heavy-duty arm support bracket and a 25 mm thick connecting plate, making it durable enough for intensive digging tasks. The modular design of the counterweight is made of solid cast steel and is easily removable for easier installation and transport.
  

JCB, a renowned British brand, has gradually gained popularity in the Chinese market in recent years. Known globally for its backhoe loaders, JCB's excavators are also highly regarded in European and American markets. In 2008, JCB introduced its 22-ton JS220 excavator to China, followed by a complete range of models including 13t, 20t, 24t, 29t, and 36t. Today, we will delve into the features and advantages of the JS220 excavator, one of the brand’s flagship products in China.
Basic Specifications of the JCB JS220 Excavator

• Maximum Operating Weight: 22,550 kg
  
• Engine Power: 128 kW / 172 hp
  
• Standard Bucket Capacity: 1 cubic meter
  
• Boom / Arm Length: 5.7 m / 3 m
  
• Maximum Arm Digging Force: 104 kN
  
• Maximum Bucket Digging Force: 158 kN
  
• Track Width: 600 mm
  

1. Fully Imported from the UK, Reliable Performance
   The JS220 is an original UK import, and its performance has been proven over years of use worldwide.
   
2. Mature Model with Global Experience
   The JS220 has been widely used across various working conditions in many countries, demonstrating its versatility and reliability in diverse environments.
   
3. Isuzu Engine: Powerful, Reliable, and Economical
   The excavator is powered by an Isuzu engine that offers robust power, high reliability, excellent fuel economy, and low maintenance costs.
   
4. Advanced Hydraulic System
   The JS220 features a load-sensing hydraulic system that can adjust flow and pressure based on the machine's load. The hydraulic oil regeneration system improves operational speed while reducing fuel consumption.
   
5. Optimized Structural Design for Durability
   The machine’s structural components are designed using finite element analysis to ensure durability. The box-type undercarriage enhances strength and rigidity, extending the machine's service life.
   
6. Four Working Modes for Different Conditions
   The JS220 offers four working modes—Auto (A), Economy (E), Precision (P), and Lifting (L)—to adapt to different job site requirements and improve productivity.
   
7. Safe and Comfortable Operation Environment
   The operator’s cabin offers excellent visibility and is equipped with a redundancy switch and a pilot accumulator to enhance safety. Maintenance and repairs are also easy to perform, with all components easily accessible.
   

• Engine
  The JS220 is powered by the Isuzu 4HK1X turbocharged diesel engine, a high-power, low-fuel consumption, and low-noise engine that meets European emission standards. This engine not only reduces fuel costs but also minimizes environmental pollution.
  
• Hydraulic System
  The excavator is equipped with high-quality hydraulic components and an advanced filtration system, ensuring long-lasting hydraulic oil and components. The bypass fine filtration system achieves a filtration precision of 1.5 microns.
  
• Diagnostic System
  The JCB Advanced Management System (AMS) provides robust maintenance, fault diagnosis, and service information. This feature reduces downtime and simplifies the maintenance process, ensuring maximum productivity.
  
• Comfortable Operation
  The spacious operator’s cabin features a fully adjustable suspension seat, ergonomic control levers, and a low-vibration, low-noise design, significantly improving operator comfort and work efficiency. The cabin also provides enhanced safety with a wide range of visibility.
  
• Structural Components
  The upper and lower plates of the boom and arm are formed from solid steel plates, eliminating extra welding joints and reducing stress points, significantly increasing durability. The lubrication interval for the boom base and arm is 1,000 hours, lowering service time and costs.
  
• Additional Benefits
  The JS220 features an automatic fuel refueling system, night lighting for safe entry and exit, and standard hydraulic pipe mounting brackets for added convenience.
  

When purchasing a mini excavator, one of the key decisions involves whether to pay a premium for a bumper-to-bumper warranty or to go with a more affordable option that only includes a limited parts warranty for the first year. One user on an excavation forum recently faced this very decision while looking at two different models.
The first option was a new mini excavator priced at $10,000 more, offering a full, bumper-to-bumper warranty. This warranty would cover all aspects of the machine, offering peace of mind regarding repairs and service for the full duration of the contract. The second option was a similar new mini excavator, but with a more affordable price tag, offering only a 1-year parts-only warranty. This choice could save a significant amount of money upfront but would leave the buyer responsible for labor and certain repair costs after the first year.
The main factor to consider here is the type of work and how long you plan to keep the machine. If you expect heavy usage and long-term ownership, the comprehensive warranty may be worth the extra money. It guarantees that the excavator will be covered for almost any problem, providing additional security against unexpected repair costs.
On the other hand, if the excavator will be used for lighter tasks or if you're planning to sell or upgrade it after a few years, the parts-only warranty might be a better fit, as it would allow you to save money upfront without the added expense of a full warranty.
Both options come with their pros and cons, but it all boils down to how risk-averse the buyer is and what their future plans for the machine entail. Some users have mentioned that having a full warranty is great for long-term peace of mind, especially when dealing with complex machinery, while others believe that the savings from choosing the cheaper option could be put towards additional attachments or tools.
Ultimately, the decision is a balance between saving money now and ensuring less worry about unexpected repair costs down the line.

When operating the Kubota U25 mini excavator, comfort and ease of control are key for productivity, especially during long hours of use. One aspect that users often look to modify is the pedal system, aiming for smoother and more ergonomic control.
User Experience with Kubota U25 Pedals:
Some operators have expressed the desire for modifications to the U25’s pedal setup to enhance their working comfort. For example, an operator shared their experience of switching out the original pedals to improve ease of use when operating the machine. In this case, they sought a solution that would offer a better grip, smoother pedal response, and ultimately a more relaxed control setup.
Common Modifications:
The main pedal-related modifications discussed often focus on the following areas:

1. Pedal Positioning: Adjusting the angle and positioning of the pedals to suit the operator’s natural foot position for better comfort.
   
2. Pedal Size: Some users look for larger or differently shaped pedals that can provide better foot placement, reducing fatigue during long operating sessions.
   
3. Footrest Enhancements: Adding extra footrests or padding around the pedals to improve comfort, especially in situations where the operator is frequently using the pedals.
   
4. Hydraulic Pedal Modifications: In some cases, operators explore changing the hydraulic connections or the response speed of the pedals to offer finer control over the movements.
   

The terms "forward operation" and "reverse operation" for an excavator refer to different ways of operating the machine, particularly in terms of the direction and movement of the bucket and arm. Here's a breakdown of the differences:
1. Forward Operation (Normal Operation)

• Definition: Forward operation means that the bucket moves in the direction toward the work area, and the arm and boom are positioned to push material away from the operator. The operator faces forward, and the machine performs typical digging and loading tasks.
  
• Common Movements: When digging, the bucket moves forward into the material, pushing or scooping it away from the machine. The movement is natural and suitable for regular excavation.
  
• Applications: Used for standard tasks like digging trenches, loading materials, and general excavation work.
  

• Definition: Reverse operation refers to when the bucket is pulled toward the operator, meaning the bucket and arm move in the opposite direction of the normal digging motion.
  
• Common Movements: In reverse operation, the bucket is pulled back towards the operator, often used for tasks like clearing debris, backfilling, or working in confined spaces.
  
• Applications: It’s often used in situations where more precision is needed, such as in tight spaces or near obstacles, or for specialized tasks like clearing rocks or working under low clearance areas.
  

1. Bucket Direction:
   • In forward operation, the bucket moves away from the operator, typically used for digging and loading.
     
   • In reverse operation, the bucket moves toward the operator, usually for pulling materials or clearing debris.
     
2. Ease of Operation:
   • Forward operation is more intuitive and commonly used in most excavation tasks.
     
   • Reverse operation requires more control and precision, as the bucket moves in an opposite direction and may be more difficult to manage in certain conditions.
     
3. Work Environment:
   • Forward operation is best suited for standard excavation tasks in open spaces.
     
   • Reverse operation is beneficial for working in tight or confined spaces, such as near walls, structures, or when precision is required for specific tasks.
     

When it comes to the durability and efficient operation of an excavator, pin bushings play a crucial role. These small but essential components are often overlooked but are vital for the smooth functioning of an excavator's various joints and linkages. Pin bushings are primarily used in the pivot points of the excavator’s arm and bucket, allowing for smoother movement and reducing friction between metal parts.
What Are Pin Bushings?
Pin bushings are cylindrical components that fit around the pivot pins of the excavator. They serve to reduce wear and tear at the contact points between moving parts. By reducing friction, pin bushings extend the life of the excavator and prevent costly repairs that could occur due to excessive metal-to-metal contact.
Common Issues with Pin Bushings
While pin bushings are generally designed to last, they can wear out over time due to excessive use, poor lubrication, or poor quality materials. When the bushings begin to wear, the pivot pins may become loose, leading to instability and reduced performance. This can cause issues with the digging performance, accuracy, and safety of the excavator.
How to Identify Worn Pin Bushings
Several signs can indicate that your excavator’s pin bushings need replacing:

• Increased play or slop in the arm or bucket
  
• Unusual noises like squeaking or grinding when moving the arm
  
• Decreased performance or efficiency during operation
  
• Visible wear and tear on the pin or bushings
  

1. Inspect the Current Bushings: Carefully assess the current bushings for signs of wear.
   
2. Remove the Old Bushings: Depending on the design of your machine, you may need to remove the arm or bucket assembly to access the worn bushings.
   
3. Install New Bushings: Once the old bushings are removed, clean the pivot points thoroughly before installing the new bushings. Ensure they are seated correctly and lubricated.
   
4. Check Alignment: Proper alignment is critical to ensure smooth movement and prevent future wear.
   

In a recent discussion about the CAT 305 excavator, users shared their troubleshooting experiences, offering valuable insights into how to address common issues that operators might encounter. One of the key topics was an issue with the hydraulic system and its impact on the machine’s performance. Below, we summarize the key points and the solutions that were suggested to resolve the issues.
Issue Overview
The CAT 305 excavator faced a series of issues related to hydraulic performance, primarily involving slow movement and unresponsive controls. The operator reported that the machine was not performing as expected, especially when it came to moving the bucket and arm. Several users in the thread offered suggestions based on their own experiences with similar problems.
Common Issues and Solutions

1. Hydraulic Pressure Problems
   One of the most common issues mentioned was a lack of hydraulic pressure, which resulted in slow and unresponsive arm movements. Several users suggested checking the hydraulic fluid levels and replacing the filter to ensure that the hydraulic system was functioning properly. It was also advised to inspect the hydraulic pump for any signs of wear or malfunction.
   Solution:
   • Check hydraulic fluid levels and refill if necessary.
     
   • Replace or clean the hydraulic filter.
     
   • Inspect the hydraulic pump for any damage or leaks.
     
2. Damaged or Worn Hydraulic Lines
   Another user suggested inspecting the hydraulic lines for leaks or wear. Over time, hydraulic lines can become cracked or worn out, leading to a loss of pressure and decreased performance. This was one of the key problems contributing to the slow movements in the excavator.
   Solution:
   • Inspect hydraulic lines for cracks or damage.
     
   • Replace any worn or damaged hydraulic lines.
     
3. Electrical Issues
   A few users also pointed out that the problem could be related to electrical components, particularly the solenoids and wiring that control the hydraulic valves. A faulty solenoid or wiring issue can cause erratic behavior in the hydraulics. Checking the electrical system and ensuring proper connection was suggested as a potential fix.
   Solution:
   • Inspect solenoids and electrical wiring for any signs of malfunction.
     
   • Test electrical connections to ensure they are secure and functioning properly.
     
4. Low Engine RPM
   Several users mentioned that low engine RPM could be the cause of poor hydraulic performance. If the engine is not running at the proper speed, the hydraulic system may not receive enough power to operate the components effectively. This issue can be resolved by adjusting the engine speed or checking for any issues with the fuel system.
   Solution:
   • Check engine RPM and adjust as necessary.
     
   • Inspect the fuel system to ensure it is providing sufficient power to the engine.
     

Recently, several users shared their experiences with using a new excavator for pond excavation projects, highlighting the challenges and benefits of using an excavator in such environments. One user shared his experience of using a newly acquired machine to clean out and deepen a pond, offering valuable insights into the equipment's performance, the project's demands, and some lessons learned along the way.
Project Overview
The user recently purchased a new excavator for the task of clearing mud and sediment from the pond and deepening it. The work site was located in a hilly area surrounded by trees and natural obstacles, making maneuverability a key factor. The pond's bottom was filled with large rocks and other natural debris, requiring the excavator to handle a variety of obstacles efficiently.
Equipment and Attachments
The excavator came equipped with a standard bucket and an adjustable hydraulic thumb. These tools proved to be incredibly useful for picking up and moving large rocks and debris. The user also employed a deep-digging attachment, which allowed the excavator to reach the bottom of the pond with greater ease and speed.
Challenges During Excavation

1. Terrain Challenges
   Although the new excavator was smooth to operate, the hilly terrain posed challenges. The uneven surface required more precise control to avoid hitting obstacles, especially when operating in narrow areas.
   
2. Water Level Management
   The varying water levels in the pond added another layer of complexity to the project. The user chose to tackle the excavation in phases, working on one side of the pond at a time to avoid significant water fluctuations that might disrupt the project.
   
3. Dealing with Rocks and Hard Soil
   The pond’s bottom was littered with rocks and dense soil. To address this, the user opted for a heavier bucket to help break through these tough materials. The excavator's stability and power made it possible to handle these difficult materials efficiently.
   

1. Phased Approach
   The user recommended taking a gradual, step-by-step approach to excavation, particularly when deepening the pond. This helps to avoid over-excavating in one go and reduces the risk of erosion or sediment buildup, ensuring more efficient and controlled progress.
   
2. Use of the Thumb
   The hydraulic thumb was a particularly useful attachment for handling larger rocks and debris. The user found that the thumb made the work much easier, especially when moving rocks that would otherwise be difficult to handle with the bucket alone.
   
3. Flexible Operation
   In tight spots, the user emphasized the importance of flexible operation. By maintaining careful control over the excavator’s movements, the user was able to increase efficiency while minimizing any damage to the surrounding environment.