Used Caterpillar 306E2 Excavator

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Caterpillar 306E2 Compact Hydraulic Excavator Detailed Introduction

The Caterpillar 306E2 is a 6-ton class compact excavator under Caterpillar’s classic E2 small excavator product line, engineered for high efficiency, durability and low operating cost. It meets EU Stage IIIA / U.S. EPA Tier 3 emission standards, and is widely adapted to small and medium construction scenarios across global markets.

1. Core Specifications

Item	Parameter
Operating Weight	5795 – 6100 kg (varies with configurations and attachments)
Engine Model	Caterpillar C2.4 DI 4-cylinder turbocharged direct-injection engine
Rated Net Power	41.5 kW @ 2200 rpm
Bucket Capacity	0.22 – 0.34 m³
Max. Digging Depth (standard arm)	3920 mm
Max. Digging Height	5850 mm
Max. Dumping Height	4060 mm
Travel Speed	2.4 km/h (low) / 4.4 km/h (high)
Slew Speed	11 rpm
System Working Pressure	28 MPa
Fuel Tank Capacity	130 L
Hydraulic Oil Tank Capacity	72 L

2. Key Performance Highlights

2.1 Power & Fuel Efficiency

The original Cat C2.4 engine features high torque output at low RPM, delivering strong power reserve even under heavy load conditions. Its optimized fuel injection system reduces fuel consumption by 8-10% compared to the previous generation 306D model, with average hourly fuel consumption of only 4-6 L under regular working conditions, greatly cutting per-hour operating costs.

2.2 Hydraulic System

It is equipped with Caterpillar’s proprietary load-sensing hydraulic system with independent flow distribution technology, which ensures precise control of boom, arm and bucket movements. It supports smooth compound operations (e.g. simultaneous digging, slewing and lifting) with minimal hydraulic loss, delivering high operation efficiency for both fine work (trench digging, landscaping) and heavy load work (rock excavation, material lifting).

2.3 Undercarriage & Structural Durability

The reinforced heavy-duty undercarriage adopts sealed and lubricated track chains, which extend service life by 30% compared with ordinary track products. The high-strength wear-resistant steel boom, arm and bucket are added with extra wear plates at high-stress positions, with 20% longer service life under harsh working conditions. It also has strong traction to adapt to muddy, sloping and uneven construction sites.

3. Operator Comfort & Safety

The cab is certified with ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure), providing full safety guarantee for operators.
Ergonomic design: Adjustable air suspension seat, low-force control levers, and panoramic blind-spot-free front/side windows reduce fatigue during long-hour operation and improve operation accuracy.
High-efficiency HVAC system with multiple air outlets maintains comfortable cab temperature under extreme cold or hot weather; sound insulation design keeps in-cab noise level below 78 dB(A).
Optional configurations: Bluetooth radio, USB charging port, sunshade and reversing camera are available to meet personalized demands.

4. Maintenance & Lifecycle Cost Advantage

All daily maintenance points (oil filling, filter replacement, fluid level check) are accessible from ground level, no need to climb onto the upper frame, which cuts daily maintenance time by 40% and reduces operation risks.
Extended service intervals: Engine oil and filter replacement every 500 working hours, hydraulic oil replacement every 5000 working hours, greatly reducing routine maintenance costs.
Supported by Caterpillar’s global dealer network, it provides 24/7 after-sales support, genuine spare parts supply and professional maintenance services, ensuring low downtime over the whole product lifecycle.

5. Application Scenarios

The 306E2 supports multiple optional attachments (hydraulic breaker, grab, fork, auger etc.), and is suitable for:

Municipal projects: Road repair, underground pipeline laying, trench digging
Landscaping: Site leveling, tree planting, garden construction
Rural infrastructure: Rural house building, small water conservancy projects, farmland renovation
Small demolition and waste cleaning
Bulk material stacking and loading

Overall, the Cat 306E2 is a cost-effective compact excavator that balances power, controllability, durability and operating cost, making it an ideal choice for small and medium contractors, rental companies and individual operators.

Non flooded

No accident

Original product

Used Caterpillar 306E2 Excavator

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