Kubota Excavators U55-4 & KX057-4
Considering Used?
More Used Equipment
Kubota Compact Excavators
U55-4 & KX057-4
Powerful 5-ton class excavators built for contractors who need productive digging, dependable hydraulics, operator comfort, and jobsite versatility from trench to finish grade.
Specs vary by configuration. Confirm availability and configuration with your Kubota dealer.
Two Ways To Work
Choose tight-space agility or open-site stability.
The U55-4 and KX057-4 share a strong 5-ton class foundation, but each is tuned for a different kind of jobsite advantage.
Kubota U55-4
A superior 5-ton tight tail swing compact excavator with the power and flexibility to work in narrow spaces, alongside structures, near traffic, and around crowded jobsites.
- ? Counterweight protrudes only about 2.5 inches for confined work areas.
- ? 11,177 lb. bucket digging force and 6,261 lb. arm digging force.
- ? Max digging depth: 11 ft. 10.3 in.
- ? Operating weight range: approximately 11,915 to 12,755 lb., depending on setup.
- ? Angle blade option with float function for efficient backfilling and grading.
Kubota KX057-4
A conventional tail swing 5-ton class excavator built for excellent stability, strong lift performance, and confident production in open work areas.
- ? Strong platform for lifting, digging, grading, and attachment work.
- ? 11,177 lb. bucket digging force and 5,644 lb. arm digging force.
- ? Max digging depth: approximately 12 ft. 9.1 in.
- ? Operating weight range: approximately 12,200 to 13,040 lb., depending on setup.
- ? Optional hydraulic angle blade with 25-degree pivot angle.
Product Improvements
Built to move faster, dig harder, and keep operators fresher.
Clean, Efficient Power
Common Rail System fuel injection, EGR, and DPF muffler technology help improve fuel efficiency, reduce engine noise, and meet Tier IV emissions requirements.
Improved Hydraulics
A 3-pump load sensing hydraulic system delivers smoother operation by matching hydraulic flow to lever movement and working demand.
Attachment Readiness
Adjustable auxiliary oil flow, thumb bracket provisions, relief valves, and optional AUX2 support quick switching between buckets, thumbs, breakers, and specialty tools.
Smoother Travel
Two-speed travel, auto-shift, increased traction force, and higher travel speeds help the machine reposition confidently across changing terrain.
Operator Comfort
A deluxe suspension seat, wrist rests, wider entrance, ample legroom, air conditioning, cup holder, 12V power source, and easy-open front window support long workdays.
Easier Maintenance
Full-opening hoods, one-sided engine service access, steel side panels, tool storage, grease gun holder, and refueling signal support quick daily checks.
Applications In The Field
Ready for the real work between excavation and finish grade.
These compact excavators are suited for contractors, municipalities, landscapers, utility crews, property developers, and owner-operators who need reliable performance without moving up to a larger machine.
Utility & Drainage
Dig water, sewer, electrical, irrigation, and drainage trenches with precise boom control and strong breakout force.
Residential Construction
Excavate footings, prep pads, work around foundations, and handle cleanup where space is limited.
Landscape & Hardscape
Shape grades, place boulders, dig ponds, prep retaining walls, and use the blade for smooth finish passes.
Roadside & Municipal
Work shoulders, culverts, sidewalks, right-of-way repairs, and confined public works zones with confidence.
How the U55-4 works in the field
The U55-4 shines when the job puts walls, curbs, traffic, fences, or buildings close to the machine. Its tight tail swing helps crews dig and rotate with less rear clearance, while the angle blade and float position help finish backfilled trenches with fewer repositioning passes.
- Urban utility repairs
- Subdivision trenching
- Backyard access work
- Foundation and retaining wall excavation
How the KX057-4 works in the field
The KX057-4 is the choice when open-area stability and lift confidence matter. Its conventional tail swing design supports productive digging, material handling, attachment work, and grading across larger jobsites where rear clearance is less constrained.
- Open site excavation
- Drainage and road shoulder work
- Demolition sorting and cleanup
- Farm, acreage, and land improvement projects
Operator-Focused Details
Comfort, control, and visibility for long days on demanding jobs.
From the digital panel and two-pattern selection system to wrist rests, suspension seating, cab air circulation, and easy service access, both machines are designed to help crews stay productive from startup to cleanup.
Put the right 5-ton Kubota excavator on your next job.
Choose the U55-4 when tight tail swing mobility is critical. Choose the KX057-4 when your site gives you room to use conventional tail swing stability. Either way, you get Kubota power, smooth hydraulics, comfortable controls, and job-ready versatility.
