Used Caterpillar 306E2 Excavator

Reading: 2043

Caterpillar 306E2 Small Hydraulic Excavator Detailed Introduction

The Caterpillar 306E2 is a 6-ton class compact hydraulic excavator developed by Caterpillar Inc. for urban construction, landscaping, utility installation and small-scale earthmoving scenarios. As a best-selling model in Cat’s E2 series small excavator lineup, it balances high operation efficiency, low fuel consumption, long-term durability and operator comfort, and is widely favored by individual contractors, rental fleets and engineering companies worldwide.

1. Core Specifications

Parameter	Detailed Data
Operating Weight	5,795 – 6,050 kg (varies by configuration and attachments)
Net Engine Power	41.5 kW @ 2,400 rpm
Standard Bucket Capacity	0.22 – 0.34 m³
Maximum Digging Depth	3,980 mm
Maximum Digging Reach	6,210 mm
Maximum Dumping Height	4,140 mm
Travel Speed (2-speed)	2.8 km/h (low) / 4.8 km/h (high)
Swing Speed	11 rpm
Gradeability	30°
Emission Standard	EU Stage IIIA / China National III

2. Core Performance Advantages

2.1 High Efficiency & Fuel Saving

The 306E2 adopts an optimized power-hydraulic matching system, which reduces fuel consumption by up to 10% compared with the previous generation 306D model, without sacrificing operation efficiency. It is equipped with two selectable work modes:

Power Mode: For heavy-load scenarios such as hard soil excavation, rock breaking and heavy material lifting, ensures full power output and short cycle time.
Economy Mode: For light-load scenarios such as landscaping, trenching and material transfer, reduces unnecessary fuel loss.

2.2 Precise Operation

The load-sensing negative flow hydraulic system delivers fast response and smooth composite actions. Operators can easily realize simultaneous movements of boom lifting, arm retracting and upper structure swinging without lag or jitter, which greatly improves operation accuracy for fine work such as pipeline laying and terrain finishing.

3. Power System

The 306E2 is equipped with a Caterpillar original C2.4 DI 4-cylinder turbocharged diesel engine:

High torque reserve at low speed, ensures strong digging force even under heavy load conditions.
Excellent low-temperature start performance: can start normally at -15℃ without auxiliary heating devices.
Two-stage fuel filtration system, adapts to low-quality fuel on construction sites, effectively reduces engine failure risk.
Engine oil and filter replacement interval reaches 500 operation hours, lowers maintenance frequency.

4. Structural Durability

All key structural parts have passed 10,000+ hours of extreme working condition tests to ensure long service life:

High-strength steel welded boom and stick, with reinforced stress points, resist impact and deformation under long-term heavy load.
X-type box-section undercarriage, has excellent torsion resistance, adapts to rugged, uneven construction sites.
Sealed and lubricated track rollers, idlers and travel motors, extend undercarriage service life by 20% compared with counterparts. Customers can choose rubber tracks (suitable for urban road work, no damage to pavement) or steel tracks (suitable for rocky sites) according to demand.
The standard bucket is made of wear-resistant steel, optional reinforced bucket with wear plates for heavy excavation work.

5. Operator Comfort & Safety

The sealed and sound-insulated cab reduces indoor noise to 78 dB(A), isolates dust and exhaust from the construction site.
Adjustable suspension seat with lumbar support, matched with low-effort pilot control joysticks, reduces operator fatigue during long-hour work.
Full-color LCD monitor displays real-time operation data, fault alarm and maintenance reminders in real time.
The cab is certified with ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure), which effectively protects operator safety in case of rollover or falling object accidents.
Standard pilot safety lock: all operation actions are disabled when the lock is activated, avoids accidental operation risks. Reverse travel alarm is also equipped to remind surrounding personnel.

6. Maintenance Convenience

All daily maintenance points are arranged at ground-accessible positions, operators can finish oil filter, fuel filter and air filter replacement without climbing onto the machine.
Two-stage air filtration system with pre-filter, adapts to high-dust construction sites, main filter replacement interval reaches 1,000 hours.
Hydraulic oil replacement interval reaches 4,000 hours under normal use, greatly reduces long-term operation cost.
Supported by Caterpillar’s global after-sales network, spare parts supply is sufficient, and the model has a 10-15% higher second-hand residual value than other same-class excavators in the market.

7. Typical Application Scenarios

Municipal engineering: trench digging, pipeline laying, sidewalk maintenance, waste clearing
Landscaping: tree pit digging, terrain shaping, nursery stock transplanting
Small construction: house foundation excavation, construction material transfer
Agricultural work: irrigation channel digging, land consolidation, farm infrastructure building
Small demolition: matched with hydraulic breakers, grab buckets, augers and other auxiliary attachments for diversified work.

Non flooded

No accident

Original product

Used Caterpillar 306E2 Excavator

RELATED PRODUCTS

Caterpillar 320GX

Caterpillar 306D

Caterpillar 336D

Caterpillar 320D2