Used Caterpillar 306E Excavator

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Caterpillar 306E Compact Hydraulic Excavator Detailed Introduction

The Caterpillar 306E is a 6-ton class compact hydraulic excavator developed and produced by Caterpillar Inc., the global leader in construction equipment manufacturing. Positioned for high versatility, low operating cost and heavy-duty durability in light to medium-duty working scenarios, it is widely favored by small construction contractors, landscaping operators, municipal maintenance teams and individual rental fleet operators worldwide.

1. Core Specifications

Parameter	Details
Operating Weight	5,795 kg – 6,150 kg (depending on configuration)
Engine Model	Cat C2.4 ACERT 4-cylinder turbocharged diesel engine
Rated Net Power	43 kW (57 hp) at 2,400 rpm
Emission Standard	EU Stage IIIA / US EPA Tier 3
Standard Bucket Capacity	0.22 m³ – 0.32 m³
Maximum Digging Depth	3,880 mm
Maximum Digging Reach (at ground level)	6,210 mm
Maximum Dump Height	4,130 mm
Travel Speed (High/Low)	4.5 km/h / 2.4 km/h
Maximum Gradeability	30°
Swing Speed	11 rpm

2. Engine & Powertrain Performance

The 306E is equipped with Caterpillar’s proprietary C2.4 ACERT (Advanced Combustion Emission Reduction Technology) engine, optimized for low fuel consumption and reliable performance in extreme working environments:

Features an electronic high-pressure common rail fuel injection system, delivering 10-15% better fuel efficiency than most competing models in the same tonnage class, reducing long-term operating costs.
No diesel particulate filter (DPF) required to meet emission standards, eliminating DPF regeneration downtime and extra maintenance costs.
Excellent cold-start performance, works normally at ambient temperatures as low as -20°C with optional cold-start packages, and supports continuous operation at 45°C high ambient temperatures.

3. Hydraulic System

The load-sensing hydraulic system with pressure compensation valves ensures precise and smooth operation:

Supports simultaneous multi-action control (boom lifting, arm swinging, bucket operation) without speed interference, greatly improving operation efficiency for fine works like trenching, landscaping and pipeline laying.
Pilot hydraulic control provides light and accurate operating feel, reducing operator fatigue during long shifts.
Extended hydraulic oil service interval of 5,000 hours under normal working conditions, cutting maintenance expenses.

4. Operator Comfort & Safety

The ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) certified cab meets global safety standards, and provides a user-friendly working environment:

Sealed and pressurized cab reduces dust intrusion, with internal noise level controlled at 78 dB(A), far lower than industry average.
Fully adjustable suspension seat with adjustable armrests, matched with high-performance heating and cooling air conditioning system, adapts to various climate conditions.
Full-color LCD monitor displays real-time operating parameters (fuel level, water temperature, hydraulic pressure, fault codes, etc.) for easy status checking.
Standard wide-angle rearview mirrors and optional reverse alarm / rear camera further improve working safety on narrow job sites.

5. Durability & Structural Design

Caterpillar’s industry-leading structural design ensures long service life even under heavy load conditions:

Boom, stick and main frames are made of high-strength wear-resistant steel, subjected to 100% stress testing to resist impact and deformation.
Sealed and lubricated track system (optional rubber track / steel track) extends service life of rollers, idlers and sprockets, reduces daily maintenance requirements.
Standard wear-resistant bucket can be upgraded to rock bucket for harsh working conditions such as quarry and demolition.

6. Maintainability

All maintenance points are designed for ground-level access, greatly reducing daily maintenance difficulty:

Centralized arrangement of engine oil filter, fuel filter, hydraulic oil filter and air filter, no need to climb onto the upper frame for regular maintenance.
Long service intervals: 500 hours for engine oil and filter replacement, 1,000 hours for air filter replacement.
Built-in SOS oil sampling port and intelligent maintenance reminder system, supporting predictive maintenance to avoid unplanned downtime.

7. Versatility & Application Scenarios

The compact size and flexible operation make it suitable for a wide range of scenarios:

Small civil construction: foundation digging, pipeline burial, site leveling
Municipal works: road maintenance, sidewalk renovation, urban greening
Agricultural projects: irrigation trench digging, land consolidation, orchard planting
Special scenarios: indoor demolition, waste sorting, material handling in narrow spaces

It supports a wide range of optional Caterpillar original attachments, including hydraulic breaker, auger, grapple, ripper, tilting bucket and quick coupler, to meet diversified working demands.

8. After-sales Support

Backed by Caterpillar’s global 24/7 dealer network, users can access genuine spare parts supply, professional maintenance services and technical support at any time, ensuring minimal downtime and high residual value of the equipment.

Non flooded

No accident

Original product

Used Caterpillar 306E Excavator

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