Used Caterpillar 306E Excavator

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Caterpillar 306E Compact Hydraulic Excavator Detailed Introduction

The Caterpillar 306E is a 6-ton class compact excavator under Caterpillar Inc.'s E-series small construction equipment lineup, specially engineered for light to medium-duty operation scenarios that require high flexibility and efficiency. It is one of the most popular models in the global small excavator market, balancing power, fuel economy, durability and operator comfort.

1. Core Power System

The 306E is equipped with a Caterpillar original C2.6 DI Turbo diesel engine, which meets EU Stage IIIA / US EPA Tier 4 Interim emission standards:

Displacement: 2.6L, net rated power: 42.5kW (57hp) at 2200rpm
Adopts direct fuel injection and turbocharging technology, delivers strong low-end torque, and reduces fuel consumption by 10% compared with the previous generation 306D model
Built-in automatic idle and intelligent speed control system, cuts unnecessary fuel waste during standby
Side-by-side independent cooling package supports continuous operation in high-temperature environments up to 45°C, with low overheating risk

2. Hydraulic System Performance

It adopts Caterpillar's mature load-sensing flow-sharing hydraulic system, which ensures precise and smooth control even when multiple actions (boom lifting, arm retracting, bucket digging) are performed at the same time:

Main pump rated flow: 132L/min, maximum hydraulic pressure: 28MPa
Standard auxiliary hydraulic pipeline, supports matching with a variety of work tools including breakers, augers, grapples and tilting buckets, greatly expands application scenarios
Boom offset function (75° left swing, 55° right swing) supports parallel operation along walls, trenches and other obstacles, perfectly adapted to narrow space construction

3. Key Operating Parameters

Parameter	Specification
Operating weight	5795~6280kg (varies with configuration: bucket size, cab type, counterweight etc.)
Standard bucket capacity	0.25m³, optional range 0.22~0.32m³
Maximum digging depth	3980mm
Maximum horizontal digging reach	6210mm
Maximum dumping height	4150mm
Travel speed	2.8km/h (low gear) / 4.5km/h (high gear)
Gradeability	30° (58%)
Upper structure swing speed	11rpm

4. Operator Comfort & Safety

The standard enclosed cab is ROPS (Roll Over Protective Structure) and FOPS (Falling Object Protective Structure) certified, which fully protects the operator in case of rollover or falling object accidents
Panoramic glass design provides 360° unobstructed visibility, reduces operation blind spots
Adjustable shock-absorbing suspension seat, fully automatic air conditioning and multi-function LCD monitoring display (shows real-time fuel level, water temperature, fault codes and other data) reduce long-term operation fatigue
Cab internal noise is controlled at 74dB(A), reaching the industry leading quiet level
Standard hydraulic lock function: after the control lever is locked, all hydraulic actions are disabled to avoid danger caused by misoperation; optional rear view camera further eliminates rear blind spots

5. Maintenance & Cost Advantage

All daily maintenance points (engine oil dipstick, fuel filter, air filter, hydraulic oil check port) are arranged at ground level, no need to climb onto the upper frame for inspection, which cuts daily maintenance time by 30%
Extended service interval: engine oil and filter replacement every 500 operating hours, hydraulic oil replacement every 5000 operating hours, which greatly reduces long-term operating costs
Supported by Caterpillar's global 24/7 after-sales service network, spare parts supply and technical support are available in most regions around the world, and the model has a very high residual value in the second-hand equipment market

6. Typical Application Scenarios

The Caterpillar 306E is widely used in:

Urban municipal works: pipe trench excavation, cable laying, sidewalk construction, small road repair
Landscaping: terrain shaping, pond digging, tree planting, garden facility construction
Small construction projects: residential foundation excavation, small building demolition, construction material handling
Agricultural operation: farmland renovation, orchard management, irrigation ditch digging, greenhouse construction
Narrow space operation: indoor demolition, construction in narrow alleys, material transfer in factories

Note: The 306E was later upgraded to the 306E2 version with further optimized emission and fuel efficiency, while the original 306E is still highly recognized by users for its proven and stable performance.

Non flooded

No accident

Original product

Used Caterpillar 306E Excavator

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