Used Caterpillar 306E2 Excavator

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CATERPILLAR 306E2 Compact Hydraulic Excavator Detailed Introduction

The Caterpillar 306E2 is a 6-ton class compact hydraulic excavator developed and manufactured by Caterpillar Inc., the world's leading construction equipment producer. As an upgraded iteration of the classic 306E series, it integrates high operating efficiency, extreme durability, low running cost and operator comfort, making it one of the best-selling small excavators in the global market, especially suited for narrow-space and light-to-medium duty construction scenarios.

1. Core Specifications

Parameter	Value Range
Operating Weight	5,795 kg – 6,150 kg (varies by configuration)
Engine Model	Caterpillar C2.4 DI Turbocharged 4-cylinder Diesel Engine
Rated Net Power	41.5 kW (55.6 hp) @ 2,200 rpm
Emission Standard	EU Stage IIIA / US EPA Tier 4 Interim / China National III
Max. Hydraulic Flow	132 L/min
System Working Pressure	34.3 MPa
Standard Bucket Capacity	0.25 m³ (optional range: 0.22 m³ – 0.32 m³)
Max. Digging Depth	3,920 mm
Max. Digging Radius	6,170 mm
Max. Dumping Height	4,150 mm
Bucket Digging Force	49.5 kN
Arm Digging Force	36.2 kN
Travel Speed (Low/High)	2.6 km/h / 4.5 km/h
Gradeability	30°
Transport Length	5,900 mm
Transport Width	2,000 mm
Transport Height	2,600 mm

2. Key Performance Advantages

Fuel-efficient Powertrain

The C2.4 engine adopts electronic high-pressure common rail fuel injection technology and optimized combustion design, reducing fuel consumption by around 6% compared with the previous generation 306E. It is equipped with automatic idle and auto-shutdown functions: it switches to low idle 3 seconds after no operation, and shuts down automatically after long-time inactivity, further cutting fuel cost. It has excellent cold start performance, can start smoothly at -15℃ without auxiliary heating, and has no power attenuation at altitudes below 3000m, adapting to various extreme working environments.

High-precision Hydraulic System

It is equipped with Caterpillar's proprietary load-sensing hydraulic system with flow-sharing technology, ensuring smooth and non-stuttering operation when multiple actions (boom lifting, arm retracting, swinging, traveling) run at the same time, with precise motion control, making its operating efficiency 10% higher than most competing products of the same class. The swing torque reaches 27 kN·m, ensuring stable performance under slope operation and load-swinging scenarios.

Reinforced Durability

The boom, arm and undercarriage are all welded with high-strength steel, and key stress points are added with reinforcing plates, passing more than 10,000 hours of fatigue testing to adapt to harsh working conditions. The X-type crawler frame has uniform load distribution and is not easy to deform, and the original Caterpillar four-wheel-one-belt (track rollers, idlers, sprockets, carrier rollers, track shoes) has 20% longer service life than third-party accessories.

3. Operator Comfort & Safety

The cab is certified to international ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) standards, providing maximum safety for operators in case of rollover or falling construction debris.

Ergonomic design: Fully adjustable suspension seat with lumbar support reduces fatigue during long-hour operation; pilot control joysticks have short stroke and low operating force, suitable for long-time precise operation.
Panoramic visibility: Large-area frameless glass windows provide 360° ultra-wide field of view with minimal blind spots, ensuring safe operation in narrow sites. Optional rearview camera provides real-time rear area monitoring.
Comfortable environment: High-efficiency heating and cooling air conditioning system can adjust the cab temperature to a comfortable range within 3 minutes even at -20℃ or 45℃ ambient temperature. The internal noise level is controlled below 78 dB(A), and it is equipped with multiple storage compartments, cup holders and USB charging ports to meet the daily needs of operators.

4. Easy Maintenance & Low Operating Cost

All daily maintenance points (oil filter, fuel filter, hydraulic return filter, etc.) are accessible at ground level, no need to climb on the upper frame. The large-angle upward-opening engine hood provides sufficient space for inspection and maintenance.
Long service intervals: Engine oil and oil filter replacement every 500 operating hours, hydraulic oil and filter replacement every 5,000 operating hours, greatly reducing downtime and maintenance cost.
The 3.5-inch LCD monitor displays real-time operating data (fuel consumption, working hours, system pressure) and active fault codes, reminding operators of maintenance in advance to avoid unexpected breakdowns.
Centralized lubrication points for the boom, arm and swing mechanism reduce daily greasing time.

5. Typical Application Scenarios

The 306E2 is widely used in various construction scenes:

Municipal engineering: Trenching for water/gas/electricity pipelines, sidewalk construction, road repair, urban green belt construction
Landscaping: Site leveling, tree pit digging, landscape shaping, small river dredging
Agricultural construction: Greenhouse construction, irrigation ditch excavation, farmland leveling, livestock farm renovation
Small demolition: Interior building demolition, small old structure dismantling (with hydraulic breaker attachment)
Material handling: Bulk material loading, stone handling, timber loading (with grapple attachment)
Narrow-space operation: Works in urban residential areas, indoor sites, or mountainous areas with limited access

6. Optional Configurations & Attachments

Caterpillar provides a full range of optional configurations to meet diverse operation demands:

Work tools: General purpose bucket, rock bucket, narrow trench bucket, hydraulic breaker, wood grapple, auger, hydraulic compactor, hydraulic shear
Quick coupler: Hydraulic quick coupler allows operators to switch between different attachments within 1 minute without dismounting pins
Dozer blade: Standard mechanical dozer blade, optional hydraulic floating dozer blade for backfilling, leveling and improving machine stability during operation
Track option: Rubber track to avoid damage to asphalt or concrete pavement, suitable for urban road operation
Other options: Rearview camera, extra working lights set, cold start kit for extremely low temperature areas, high altitude adaptation kit

After-sales Support

Caterpillar provides global unified after-sales support through its 2,000+ authorized dealer outlets worldwide, including 24/7 on-site maintenance service, original spare parts supply, professional operator training, and flexible warranty policies, ensuring minimum downtime for users.

Non flooded

No accident

Original product

Used Caterpillar 306E2 Excavator

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