3 Tonne Excavator
High-Power RATO Engine:20.5 kW output delivers strong, reliable digging performance.
Large Digging Radius:3,700 mm reach covers more ground with less movement.
Minimal Tail Swing:660 mm radius works easily in extremely tight spaces.
Quality Hydraulic Components:Premium pumps and valves ensure smooth, precise control.
Fuel-Efficient Operation:0.82 L/h consumption keeps running costs low.
Product Introduction
Compact Powerhouse for Demanding Tasks
The QK30R is a robust mini excavator engineered for professional construction and landscaping applications requiring substantial power in a compact footprint. Featuring an impressive 0.08 m³ bucket capacity and powered by a high-performance RATO 825 gasoline engine, this machine delivers 20.5 kW maximum output at 3,600 rpm. The QK30R achieves exceptional productivity with a 3,700 mm maximum digging radius and minimal 660 mm tail swing radius, enabling efficient operation in confined spaces. With travel speeds up to 1.8 km/h and 11% gradeability, it navigates diverse terrain confidently, making it ideal for urban construction sites, utility installations, and residential excavation projects.
Advanced Hydraulic System and Efficiency
At the heart of the QK30R lies a sophisticated hydraulic system featuring a Tianjin Travel GP5183 main pump delivering 21.6 L/min maximum flow at 16.8 MPa rated pressure. The Taiheng multi-way valve with 4 mechanical and 4 hydraulic controls ensures precise, responsive operation for delicate digging and powerful lifting tasks. Equipped with Kern/Liyuan BM6-390 walking motors and 2.5K rotary motors, this system provides smooth, reliable movement and 360-degree rotation. The forced air-cooled engine with 0.82 L/h theoretical fuel consumption and 92# gasoline compatibility delivers cost-effective, environmentally conscious performance for continuous professional use.
Optimized Design and Mobility
The QK30R balances substantial capability with compact dimensions—2,290 mm length, 1,290 mm width, and 2,245 mm height—facilitating transport between job sites. Its robust 230×72×54 rubber tracks with 1,460 mm tread width and 1,055 mm track gauge ensure excellent stability and minimal ground disturbance. The generous 1,300 mm by 220 mm bulldozer blade with 365 mm maximum lift height and 220 mm dig depth enables efficient grading and backfilling. With a tight 1,860 mm minimum turning radius and practical 1.6L engine oil capacity, the QK30R maximizes uptime while delivering professional-grade excavation performance where larger machines cannot operate.
Product Details
Full Opening Engine Cover The tilt-up engine cover provides full access to core engine components, streamlining maintenance and inspections. |
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Rato Engine Powered by the reliable QK30R Rato engine, delivering strong performance with low noise and vibration. Engineered for exceptional fuel efficiency and dependable power output. |
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Spacious driving experience Designed with generous legroom and intuitive controls for ease of operation. The driver's seat features adjustable front-and-back positioning to enhance comfort during long working hours. |
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Thickened chassis Features an extended and reinforced chassis constructed through an integrated forging process, ensuring improved durability and structural strength. |
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Variable speed motor Equipped with a travel motor that supports both high and low-speed modes, delivering enhanced power and operational flexibility across varied terrains. |
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New LED Boom Work Light Fitted with energy-efficient LED work lights (non‑halogen) on the boom, offering superior illumination and extended service life for low-light working conditions. |
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Product Specifications
Model Information | QK30R | |
Basic Performance Parameters | Bucket capacity(m³): | 0.08 |
Walking speed Low/High speed(Km/h): | 0-1.8 | |
Gradeability(%): | 11 | |
E Maximum digging radius(mm): | 3700 | |
F Minimum radius of gyration(mm): | 1860 | |
G Minimum gyration radius of the tail(mm): | 660 | |
H Maximum lifting height of bulldozer | 365 | |
I Maximum digging height of bulldozer | 220 | |
Size | J Total length(mm): | 2290 |
K Total width(mm): | 1290 | |
L Total height(mm): | 2245 | |
M Tread width(mm): | 1460 | |
N Track gauge(mm): | 1055 | |
Bulldozer width/height(mm): | 1300/220 | |
Engine | Engine Brand： | RATO |
Engine model: | 825 | |
Maximum power(Kw): | 20.5 | |
Maximum Rotation Speed(rpm): | 3600 | |
Number of cylinders: | 2 | |
Cooling method: | forced air cooling | |
Engine oil change volume(L): | 1.6 | |
Fuel type: | gasoline | |
Fuel label: | 92# | |
Theoretical fuel consumption(L/h): | 0.82 | |
Hydraulic System | Main pump type/model: | GP5183 |
Main pump brand： | Tianjin Travel | |
Rated set pressure(Mpa): | 16.8 | |
Max. flow rate of main pump(L/min): | 21.6 | |
multi-way valve： | 4 Mechanical+4 Hydraulic Control | |
Multi way valve brand： | Taiheng | |
Rated set pressure(Mpa): | 16.3 | |
Walking hydraulic motor type: | BM6-390 | |
Walking Motor Brand： | Kern/Liyuan | |
Motor Displacement: | 390 | |
Rotary hydraulic motor type: | 2.5K | |
Displacement: | 400 | |
Track | 〇-Rubber (track width * pitch * number of sections): | 230*72*54 |
Applications
Landscaping & Garden Works
This 3-ton mini excavator is engineered to excel in landscaping and garden maintenance, handling tasks from tree planting and garden shaping to drainage trenching and lawn renovation with precision. Its compact footprint grants effortless access to residential yards, parks, and green spaces, minimizing ground disruption and safeguarding delicate landscapes.
Trenching & Utility Installation
Renowned for its reliability, the machine is a top choice for narrow-trench excavation, cable laying, and water or irrigation pipeline installation. It is extensively deployed in utility projects, farm irrigation systems, and underground service work, delivering exceptional control and creating clean, well-defined trench profiles.
Indoor & Confined Space Construction
Boasting a small footprint and superior maneuverability, the 3-ton mini excavator is the ultimate solution for indoor demolition, basement excavation, and interior renovation. It operates with high efficiency in tight spaces inaccessible to larger machinery, making it indispensable for challenging confined environments.
Road Maintenance & Municipal Works
Ideal for urban infrastructure upkeep, this excavator tackles sidewalk repair, pavement cutting, foundation preparation, and general municipal maintenance with ease. Its compact size and agility enable effective operation in restricted urban job sites, ensuring minimal disruption to daily life.
Concrete Breaking & Cleaning Operations
When fitted with specialized attachments like breakers or cleaning buckets, the machine effortlessly handles light concrete breaking, drainage ditch cleaning, desilting, and canal maintenance. It stands as a versatile and reliable asset for environmental protection and water conservancy initiatives.
Packaging & Shipping
Professional Export-Grade Packaging & Logistics
At KMX, we recognize that the transit of your equipment from our facility to your worksite is a vital link in the chain of productivity. Therefore, every mini excavator is treated with the highest level of care, adhering to stringent export-grade packaging protocols and managed within a meticulously coordinated logistics framework. This comprehensive, end-to-end strategy ensures your machinery receives unparalleled protection and arrives safely and punctually, regardless of your global location.
Expert Container Loading & Stabilization
To achieve optimal security for ocean freight, our trained specialists expertly load each machine into standard shipping containers (20GP or 40HQ). Utilizing specialized handling equipment, including forklifts and loading ramps, we guarantee a seamless and damage-free transfer process. Inside the container, each excavator is meticulously immobilized using heavy-duty nylon lashing straps and timber blocking. This advanced restraint system anchors the equipment firmly, eliminating any potential for movement or shifting during transit. The outcome is a perfectly secured cargo capable of enduring the demands of extended sea and land journeys, providing you with absolute confidence.
Customized Logistics Solutions
Our commitment extends far beyond superior packaging. We provide adaptable shipping options designed to align with your specific project schedule and financial considerations. Whether your needs call for a Full Container Load (FCL), Less than Container Load (LCL), or expedited air freight, our seasoned logistics professionals will orchestrate the most efficient and economical routing to your designated port or final destination.
Company Profile
Established in 2009, Yancheng KMX Machinery Manufacturing Co., Ltd. has emerged as a premier manufacturer in the construction and landscaping machinery sector. We seamlessly integrate research and development, manufacturing, global sales, and after-sales service into a unified and efficient operation. Our state-of-the-art production facility, covering an area exceeding 270,000 square meters, is supported by a highly skilled team of over 500 professionals dedicated to excellence.
To strengthen our international service capabilities, KMX has strategically established proprietary warehouses in Chicago and Houston. This critical infrastructure guarantees swift parts availability and localized technical assistance, offering our overseas partners a dependable and responsive collaboration experience.Fueled by a relentless pursuit of innovation, KMX boasts a portfolio of 93 patented technologies, backed by a specialized R&D team committed to advancing the industry. Our extensive product range—encompassing loaders, excavators, and a full suite of landscaping equipment—is meticulously developed and produced in strict adherence to rigorous international quality standards.
KMX machinery is now exported and highly regarded across Europe, North America, Asia, and Africa. We have cultivated lasting relationships with a global clientele by consistently providing robust and innovative equipment solutions. Guided by our core principle of maximizing customer value, KMX is steadfast in its ambition to become a world-renowned leader in the mechanical manufacturing industry.
