Mini Excavators with Zero Tail Swing

Overview

The Kobelco SK35SR-6 mini excavator promises three things; short-radius agility, quiet operation, and full-size performance. The 2024 build of the machine introduces several performance improvements and new features, compared to the SK35SR-5, for example. These include better fuel consumption, more operator cabin improvements, and an overall better, modern feel.

What's new

In closed cabin configuration, the new build mini excavator comes with ROPS and TOPS guard level 1 standards for greater operator safety.

Optional equipment

• Rear-view mirror,
• Rear under-mirror,
• ROPS/FOPS cab with air conditioning,
• 2-way piping (foot control),
• 300 mm rubber or steel shoes,
• Dozer blade,
• Boom cylinder cover,
• Radio (aux, USB Port & Bluetooth wireless system)

Efficiency & performance

With a wider working range, the 3-ton mini excavator has a 5.3 meter vertical reach, a 4.8 meter dumping height, and a 3-meter digging depth due to the longer boom-and-arm provided as a standard in its new build. Combined with 0 tail overhang (short tail-swing, a.k.a. short radius), the compact excavator can work indoors and in tight or limited spaces outdoors as well. At 2.5 meters high, the mini excavator can be transported to and from sites very easily, sometimes by loading it on an LCV (granted it can lift 3.7 tons as GVW), without the need to rent a low-bed truck.

When it comes to fuel economy vs actual digging power- the SK35SR-6 doesn’t come short in both of those categories. In terms of hydraulic power, the mini utilizes a three-pump system that delivers a flow of 38.4 l/min at a pressure of 23 MPa. This integrated pump flow system allows the machine to conserve power while still maintaining digging momentum even under heavy loads. While operating, the operator can use the S power mode to consume fuel 25% less compared to previous models. While idling, the one-touch deceleration feature will also reduce fuel intake while the machine is at a rest.

Interior

The newly designed rectangular cab is about 820 mm wide, with an optimized control layout for comfortable, easy operation. A greater window area further improves front visibility, a clear view is also provided at the rear. The seat is made of quality material that is water and spill proof, air-suspended, and it can slide further to ensure plenty of legroom.

The cabin features a wide-opening door and a right-hand tilting control console with a safety lever that rises high, making it easy for operators to enter and exit the cab. ​​The climate control system is located down and to the right of the seat, contrary to older models, keeping the rear view clear. As for the levers, the swing joystick (to the right) integrates precise proportional controls to easily operate the dozer blade.

The mini’s workspace includes several comfort features such as a coat hook, several air conditioning/heating vents, a work light, and a two-mode radio with USB, Bluetooth, and AUX connectivity. Notably, the front window opens and closes completely, and it’s equipped with gas damper cylinders for smooth and easy opening and closing.

Safety

The new standard ROPS/TOPS guard level 1 enclosed cabin ensures a more robust build, making it safe to operate in heavily wooded areas, protecting the front glass from being punctured by tree boughs or hard twigs. As for machine integrity, the boom, arm and swing bracket all have large cross-section segments for added attachment strength and durability, coupled with bolt-tightened, plate-type pins that firmly lock the boom and arm to prevent the boom top from opening laterally. The hydraulic piping is also housed inside the swing bracket, for added durability.

In comparison

Starting with the power plant, the SK35SR-6 comes with a 24.2 hp water cooled, 4-cycle, 3-cylinder, direct injection Yanmar 3TNV82A-B diesel engine, which has around 80 Nm torque on a 1.3 l engine, fueled by a 42 l fuel tank. Which is quite economical compared to the 1.6 l Yanmar 3TNV88 diesel engine fitted on the previous SK35SR-5, though it delivered 30.1 hp and around 100 Nm of torque. The real, tactile improvement, however, is in the hydraulic system- where the previous model had just a 38.4 l/min double pump compared to the new 58.6 l/min triple pump.

Verdict

For landscaping contractors looking to get a bang for their buck, the 2024 Kobelco SK35SR-6 mini excavator is a top choice. The new build offers the fuel economy, the agility, and the worry-free ease of operation needed for demanding jobs. It’s one investment that pays off in the future, in terms of cheap maintenance, and affordable OEM parts availability.

Our review process

Makana works with a select group of heavy industry experts who have 20+ years of experience operating heavy equipment both locally and globally to deliver tested, tried and true data for interested buyers. Our approach aims to convey unbiased, field-proof information across the board, with no intention of promoting our or our consignors’ stock of heavy machinery.

Overview

The 2020-2025 Cat 303 mini excavator, powered by a Cat C1.3-EF04 engine meeting Stage IV emissions standards, has demonstrated solid performance over approximately 5,305 operational hours. Manufactured in Japan, this machine is designed for tasks such as landscaping, utility work, and small-scale construction projects.​

What's new

The 2020-2025 model of the Cat 303 introduced several updates aimed at improving transportability and performance. A notable change was the reduction in operating weight to approximately 3,310 kg (7,297 lb) for the canopy version, enabling easier transportation without compromising performance.

An optional 267-kg (588-lb) counterweight is available for users requiring additional stability during heavy-duty applications, bringing the machine's weight back to the previous model's 3,311 kg (7,300 lb).

The compact design, with a width of 1,550 mm (60 inches) across the blade and zero-radius tail swing, allows the 303 to operate efficiently in tight spaces and congested job sites.

Efficiency and performance

In day-to-day operations, the Cat 303 mini has proven to be a reliable and efficient machine. Its compact size and zero-tail-swing design make it particularly effective in urban environments and confined work areas. The machine's digging capabilities are commendable, allowing for precise excavation tasks.​

However, some operators have observed that the machine can become slightly unstable when lifting heavy loads, indicating a need for cautious operation in such scenarios. ​

Routine maintenance is straightforward, with accessible service points that facilitate quick inspections and servicing, thereby minimizing downtime.​

In-cabin and interior features

The operator station of the Cat 303 small excavator is designed with user comfort in mind. The ergonomic layout ensures that controls are within easy reach, and the spacious cab provides ample room for operators of varying sizes. These features contribute to a comfortable working environment, reducing fatigue during long shifts.​

Visibility from the cab is adequate, allowing operators to have a clear view of the work area, which enhances operational safety and precision.​

Safety features

Safety features of the Cat 303 include a certified lifting eye on the bucket linkage, facilitating secure lifting operations. The machine's design ensures that auxiliary hydraulic lines are equipped with quick connects, allowing for safe and efficient attachment changes.​

The robust construction of the machine, combined with its stable operation, minimizes the likelihood of accidents due to equipment failure. The operator station's design ensures clear visibility of the work area, further enhancing operational safety.​

In comparison

Compared to previous models, the 20-25 Cat 303E offers improved transportability due to its reduced weight, making it more convenient for operators who frequently move equipment between job sites. The optional counterweight provides flexibility, allowing users to tailor the machine's stability to their specific needs.

When compared to competitors in the same class, such as the Bobcat E32, some users have noted that Cat machines can be slower and consume more fuel, potentially due to differences in hydraulic system configurations. However, the Cat 303's operator comfort and control layout are often highlighted as positive aspects, making it a strong contender in the mini excavator market.

Verdict

The 2020-2025 Cat 303 mini excavator earns a solid 5-star rating for its compact design, operator comfort, and reliable performance. While there are minor concerns regarding hydraulic hose accessibility and stability under heavy loads, the machine's overall capabilities and features make it a valuable asset for various construction and landscaping projects.

Overview

The Yuchai YC55-8 sits at the upper end of the mini excavator segment, delivering 38.9 kW of power, strong digging forces, and a working envelope that rivals smaller mid-size machines. It’s designed for contractors who want compact access without sacrificing breakout force or reach.

Efficiency

With 110 lpm hydraulic flow and a responsive Yanmar engine, the YC55-8 maintains smooth cycles in trenching and loading. Fuel capacity supports long shifts without frequent refueling.

In Cabin

The operator station is functional and straightforward, prioritizing visibility and control layout over luxury.

In Comparison

Against the Cat 303, the YC55-8 offers more digging depth and mass for stability. Compared to the Cat 305, it trades some refinement for stronger value pricing.

Verdict

Rated 5 stars, the Yuchai YC55-8 is a strong value mini excavator for contractors needing real digging power in a compact class.

Overview

The 2021 Cat 305.5E2 mini excavator, powered by a Cat C2.4 DI engine compliant with Stage III emissions standards, has proven to be a reliable asset over approximately 8,550 operational hours. Manufactured in China, this machine boasts an operating weight of around 5,400 kg and a net power of 31.1 kW (41.7 hp), making it suitable for various construction and landscaping tasks.

What's new

The 2021 iteration of the Cat 305.5E2 introduced several enhancements aimed at improving operator experience and machine performance. A significant update was the redesigned operator station, featuring a wider entry, adjustable armrests, and an improved ergonomic layout, enhancing comfort during extended use.

The integration of the COMPASS control panel provided operators with advanced functionalities, including a passcode-protected security system and adjustable auxiliary hydraulic flow settings, allowing for precise control of various attachments.

Additionally, the High Definition Hydraulic (HDH) System was introduced, offering load-sensing and flow-sharing capabilities. This system improved the machine's responsiveness and efficiency, particularly during simultaneous operations such as traveling and lifting.

Efficiency and performance

In practical applications, the Cat 305.5E2 has demonstrated exceptional performance across various tasks. Its high digging forces and fast cycle times contribute to increased productivity on job sites. The machine's stability and smooth operation have been highlighted by operators, making it effective in both excavation and material handling tasks.

Routine maintenance is facilitated by the machine's design, featuring large side doors that provide easy access to service points. This accessibility contributes to reduced downtime and ensures consistent performance over extended periods. ​

However, the boom swing mechanism's positioning requires careful operation in confined spaces to avoid unintended contact with surrounding structures. Additionally, operators engaging in heavy-duty tasks may find the standard thumb attachment less durable, potentially necessitating aftermarket enhancements.

In-cabin and interior features

The updated operator station in the 2021 model offers a more comfortable and user-friendly environment. The wider entry and adjustable armrests accommodate operators of varying sizes, reducing fatigue during long shifts. The improved ergonomic layout ensures that controls are within easy reach, enhancing operational efficiency.

The COMPASS control panel adds a layer of convenience, allowing operators to customize settings such as auxiliary hydraulic flows to match specific attachment requirements. The passcode-protected security system enhances machine security, particularly on job sites with multiple operators.

Safety features

Safety remains a priority in the Cat 305.5E2's design. The machine is equipped with a certified lifting eye on the bucket linkage, facilitating secure lifting operations. The inclusion of auxiliary hydraulic lines with quick connects allows for safe and efficient attachment changes, reducing the risk of hydraulic leaks.

The robust construction of the machine, combined with its stable operation, minimizes the likelihood of accidents due to equipment failure. The operator station's design ensures clear visibility of the work area, further enhancing operational safety.​

In comparison

Compared to previous models, the 2021 Cat 305.5E2 offers significant improvements in operator comfort and machine responsiveness. The introduction of the HDH System and the COMPASS control panel distinguishes it from earlier versions, providing operators with advanced tools to enhance productivity.

When compared to competitors in the same class, such as the Kobelco SK55, the Cat 305.5E2 stands out with its refined cab design and customizable hydraulic settings. However, some operators have noted that the Kubota offers slightly smoother control systems, highlighting the importance of considering specific job requirements when selecting equipment.

Verdict

The 2021 Cat 305.5E2 Mini Excavator earns a solid 5-star rating for its durability, enhanced operator comfort, and efficient performance. While certain design aspects, such as the boom swing mechanism and standard thumb attachment, present minor challenges, the machine's overall reliability and advanced features make it a valuable asset for various construction and landscaping projects.

Overview

The Komatsu PC78UU-6 sits at the top end of the mini excavator segment, delivering 40.2 kW of power, high hydraulic output, and a working range that rivals smaller mid-size excavators. Its zero-tail design allows confident operation in confined environments without sacrificing stability.

Efficiency

With 160 lpm hydraulic flow and a proven Komatsu engine, the PC78UU-6 maintains fast, smooth cycles in trenching, loading, and utility work.

In Cabin

The cab prioritizes visibility, simple control layout, and operator comfort, supporting long shifts and precision operation.

In Comparison

Compared to the Cat 307, the PC78UU-6 offers more hydraulic power and digging force. Against the Cat 308, it delivers similar performance with a more compact operating feel.

Verdict

Rated 5 stars, the Komatsu PC78UU-6 is a dependable, high-performance mini excavator that balances compact size with serious capability.

Overview

Built for tight jobs, the QH13R includes thoughtful comfort upgrades like a sealed cockpit, while retaining basic mini-excavator functionality—3rd valve, blade, etc.

Performance & Efficiency

Simple hydros, gear-pump flow, and compact engine design blend for low-cost operation.

In Comparison

Like QH12 but with a cab. Same DNA, more comfort.

Verdict

Great choice for tiny jobs with dusty or rough conditions. Not the tool for heavy-duty digging or playing spec-sheet chase.