Used Kubota U55-4 Excavator

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Detailed Introduction to Kubota U55-4 Compact Crawler Excavator

The Kubota U55-4 is a 5.5-ton class compact crawler excavator developed by Kubota Corporation, the global leading manufacturer of small construction equipment. As a core model of Kubota’s renowned U-series zero-tail-swing excavator line, it is designed for high maneuverability, efficiency and durability, especially for operation in confined work spaces.

1. Core Specifications

Parameter	Details
Operating Weight	5,420 kg – 5,680 kg (varies by configuration)
Engine	Kubota V2607-CR-E3B 4-cylinder direct-injection diesel engine, compliant with EU Stage IIIA / US Tier 4 Interim / China National III emission standards
Rated Power	40.2 kW (54 hp) @ 2,700 rpm
Standard Bucket Capacity	0.19 m³ – 0.22 m³
Digging Force (Bucket)	40.2 kN
Digging Force (Arm)	24.7 kN
Max Digging Depth	3,830 mm
Max Digging Height	5,780 mm
Max Dumping Height	4,090 mm
Swing Speed	9.5 rpm
Travel Speed	2.6 km/h (low) / 4.5 km/h (high)
Hydraulic System Working Pressure	28 MPa
Fuel Tank Capacity	70 L
Standard Track Width	400 mm (rubber track; steel track optional)
Overall Width (standard configuration)	2,000 mm

2. Key Performance & Design Features

(1) Zero Tail Swing Structure

The upper body’s tail does not exceed the track width during full 360° rotation, making it perfectly adapted for operation in narrow sites such as urban alleys, indoor spaces, and areas close to buildings or traffic lines, without risk of collision.

(2) High-efficiency Power & Fuel Economy

The self-developed Kubota engine adopts high-pressure common rail fuel injection technology, matched with EGR (Exhaust Gas Recirculation) and DPF (Diesel Particulate Filter) systems, delivering low fuel consumption, low noise and low vibration while meeting strict emission requirements.

(3) Precise Load-sensing Hydraulic System

The closed-center load-sensing hydraulic system automatically adjusts oil flow according to actual operation load, ensuring smooth compound actions (simultaneous digging, swinging and traveling) and precise control. It is equipped with 1-2 auxiliary hydraulic circuits as optional, supporting multiple types of work attachments. The standard hydraulic dozer blade with floating function greatly improves backfilling and grading efficiency.

(4) Safe & Comfortable Operation Cabin

The cabin is ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) certified, ensuring operator safety under extreme working conditions.
Equipped with adjustable suspension seat, ergonomic control joysticks and a fully sealed sound-insulated design, the in-cab noise level is controlled below 75 dB(A) during operation.
Large-area panoramic glass windows reduce blind spots, and the high-definition LCD monitor displays real-time data including fuel level, hydraulic oil temperature and fault codes for easy operation.

(5) Easy Maintenance

All daily maintenance points (air filter, oil filter, fuel filter, radiator, hydraulic oil check port) are designed to be accessible from the ground, greatly reducing daily maintenance time. Kubota’s built-in intelligent diagnosis system supports fast fault detection and reduces downtime.

(6) Heavy-duty Durability

The X-type reinforced chassis frame, high-strength steel boom and arm with reinforced welding joints, and anti-drop safety valves installed on the boom and arm (preventing sudden fall of the work device if oil pipes break) all extend the service life of the whole machine and improve operation safety.

3. Typical Application Scenarios

Urban municipal works: pipeline laying, sidewalk reconstruction, small foundation construction
Landscaping: tree pit digging, site leveling, irrigation pipeline laying
Small & indoor demolition: interior wall demolition, concrete breaking
Agricultural operations: farm ditch digging, greenhouse construction, pasture finishing
Residential construction: foundation excavation, construction waste removal
Utility maintenance: water pipe, power cable and communication line repair in narrow streets

4. Optional Attachments

The U55-4 supports a wide range of customized attachments to expand its functionality:Hydraulic breaker, earth auger, log grapple, tilt bucket, rake bucket, quick coupler, extended dozer blade, rubber track pads, etc.

5. After-sales & Value Advantage

The Kubota U55-4 has been verified by millions of hours of operation in global construction sites, with extremely low failure rate and high residual value in the second-hand equipment market. Kubota’s global after-sales network provides sufficient spare parts supply and professional maintenance services, ensuring stable operation of the equipment throughout its life cycle.

Non flooded

No accident

Original product

Used Kubota U55-4 Excavator

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