Used Kubota U-30 Excavator

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📌 Overview

The Kubota U30-3 is a 3-ton class (zero tail swing) compact/mini excavator manufactured by Kubota Corporation, a Japanese heavy equipment manufacturer. It is part of Kubota's popular U-Series lineup, designed for tight-space operations in construction, landscaping, utility work, and small-scale excavation.

🔧 Engine Specifications

Parameter	Details
Engine Model	Kubota D902-E3B
Type	3-Cylinder, Turbocharged Diesel
Displacement	898 cc (0.898 L)
Rated Power	18.2 kW (24.4 HP) @ 2,200 rpm
Max Torque	76 N·m (56.1 lb-ft) @ 1,400 rpm
Emission Standard	EPA Tier 4 Final / EU Stage V
Fuel Tank Capacity	~40 L (10.6 gal)
Cooling System	Water-cooled

✅ The engine is known for being fuel-efficient, reliable, and low-emission.

📐 Dimensions & Weight

Parameter	Value
Operating Weight	~2,990 kg (6,592 lbs)
Overall Length (w/o bucket)	3,890 mm (153.1 in)
Overall Width (min/max)	980 – 1,180 mm (38.6 – 46.5 in)
Overall Height (w/ canopy)	2,430 mm (95.7 in)
Ground Clearance	350 mm (13.8 in)
Track Width	Adjustable: 980 / 1,080 / 1,180 mm
Tail Swing	Zero Tail Swing (ZTS) ⭐

⭐ Zero Tail Swing means the upper structure does NOT swing beyond the track width — ideal for working near walls, fences, and buildings.

💪 Performance / Work Range

Parameter	Value
Max Digging Depth	3,170 mm (10.40 ft)
Max Reach (Ground Level)	4,430 mm (14.53 ft)
Max Dump Height	3,310 mm (10.86 ft)
Max Digging Radius	4,060 mm (13.32 ft)
Bucket Capacity	0.04 – 0.09 m³ (0.05 – 0.12 cu yd)
Max Breakout Force (Boom)	~18 kN (4,047 lbf)
Max Breakout Force (Arm)	~13 kN (2,922 lbf)
Travel Speed	~4.6 km/h (2.9 mph)

🏗️ Key Features

Feature	Description
🔄 Zero Tail Swing (ZTS)	Works in extremely confined spaces without hitting obstacles
🛡️ Boom Swing	The boom can swing left/right (45° each side) for offset digging
🔩 Quick Coupler Ready	Compatible with hydraulic quick couplers for fast attachment changes
🛞 Rubber Track Option	Available for indoor/pavement-sensitive work (reduces ground damage)
🛖 ROPS/FOPS Canopy	Fully enclosed cab available for operator comfort & safety
🕹️ Proportional Controls	Smooth, precise joystick operation
🧹 Easy Maintenance	Ground-level service points, wide-open engine compartment
🔌 Auxiliary Hydraulics	2nd auxiliary line for hammers, augers, grapples, etc.
📡 Optional GPS/Grade Control	Ready for precision grading systems

🔄 Available Attachments

Attachment	Use Case
🪣 Standard Bucket (100–300mm)	General digging
🔨 Hydraulic Breaker (Hammer)	Demolition, concrete breaking
🌀 Auger / Earth Drill	Post holes, piling
🦷 Grading Bucket	Leveling, finishing
🪓 Thumb / Grapple	Material handling, sorting
🪚 Trenching Bucket	Narrow trench work
🧹 Brush Cutter	Land clearing, vegetation

📊 Comparison with Competitors

Spec	Kubota U30-3	CAT 303.5	John Deere 35G	Komatsu PC35MR
Weight	2,990 kg	3,520 kg	3,690 kg	3,710 kg
Power	24.4 HP	24.8 HP	24.8 HP	24.7 HP
Dig Depth	3.17 m	3.38 m	3.37 m	3.35 m
Tail Swing	ZTS ✅	Conventional	Conventional	Conventional
Price Range (USD)	~$45K–$55K	~$42K–$50K	~$48K–$58K	~$44K–$52K

🏆 Kubota U30's biggest advantage = ZTS + compact size + fuel efficiency + low maintenance cost

✅ Advantages

✅ Pros	Details
Compact & lightweight	Easy to transport on a trailer
Fuel efficient	~2–3 gal/hour under normal load
Low maintenance cost	Kubota engines are legendary for durability
ZTS design	Best-in-class for confined spaces
Resale value	Kubota holds value very well
Quiet operation	Lower noise than many competitors

⚠️ Cons	Details
Less digging force	Smaller than 4–5 ton class machines
Limited bucket size	Max ~0.09 m³
Higher initial cost	Slightly more than some Chinese brands
Narrow tracks	Can be soft on muddy ground (use wide tracks)

🎯 Typical Applications

🏗️ Application	📝 Details
Residential excavation	Foundations, basements, utility trenches
Landscaping	Grading, planting, drainage
Utility work	Pipe laying, cable trenching
Indoor demolition	With rubber tracks + zero tail swing
Farm work	Drainage ditches, pond digging
Renovation	Tight urban job sites

💰 Approximate Pricing (2024)

Configuration	Estimated Price (USD)
U30-3 (Open ROPS)	$42,000 – $48,000
U30-3 (Enclosed Cab)	$48,000 – $55,000
With Rubber Tracks	+$3,000 – $5,000
With A/C + Heat	+$2,000 – $3,000

(Prices vary by region, dealer, and options)

🏅 Summary


Best For	Tight spaces, residential work, utility, landscaping
Class	3-Ton Mini Excavator
Signature Feature	⭐ Zero Tail Swing + Boom Swing
Engine	Kubota D902 3-cyl Diesel (24.4 HP)
Verdict	🏆 One of the best 3-ton mini excavators on the market — compact, efficient, reliable, and perfect for operators who need precision in confined spaces.

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