Used Caterpillar 306E2 Excavator

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Caterpillar 306E2 Compact Crawler Excavator Detailed Introduction

The Caterpillar 306E2 is a 6-ton class compact crawler excavator developed and manufactured by Caterpillar Inc., targeted at small and medium construction scenarios. It inherits Caterpillar's consistent strengths in heavy-duty durability, operational efficiency and low total cost of ownership (TCO), and is one of the best-selling models in the global small excavator segment.

Key Basic Specifications

Parameter	Specific Value
Operating Weight	5795 kg - 6100 kg (varies with configurations)
Rated Net Power	41.5 kW (at 2400 rpm)
Bucket Capacity	0.22 m³ - 0.34 m³
Max. Digging Depth	3980 mm
Max. Digging Reach	6220 mm
Max. Dumping Height	4140 mm
Bucket Digging Force	50.6 kN
Arm Digging Force	36.2 kN
Travel Speed (High/Low)	4.5 km/h / 2.4 km/h
Swing Speed	11 rpm
Emission Standard	EU Stage IIIA / US EPA Tier 3 / China National III

Core Performance & Design Advantages

1. Reliable Power System

The 306E2 is equipped with a Caterpillar original C2.4 4-cylinder direct-injection turbocharged diesel engine, optimized for the variable low-load working conditions common in small excavator operations:

Low-rpm high torque output: maximum torque of 204 N·m at 1600 rpm, ensuring strong power output even under heavy digging loads, while reducing unnecessary fuel consumption.
Dual-stage fuel filtration system, which can adapt to low-quality fuel in emerging markets, effectively reducing engine failure risks.
Low exhaust emissions, meeting mainstream environmental protection requirements in most global markets.

2. High-efficiency Hydraulic System

It adopts Caterpillar's exclusive load-sensing hydraulic system (LCS):

Accurately matches hydraulic flow output according to actual operation demands, realizing highly coordinated compound actions (boom lifting + arm retracting + swing) without jitter, improving operation efficiency by 12% compared with similar models.
High-quality imported seals are used for all hydraulic components, with low leakage risk and long system service life.
Optional auxiliary hydraulic pipeline supports the installation of breakers, augers, grapples and other attachments, expanding the application range of the equipment.

3. Heavy-duty Structural Durability

The whole vehicle is designed in accordance with Caterpillar's heavy-duty engineering standards:

Main frame, boom, arm and undercarriage are all made of high-strength alloy steel, and 100% ultrasonic flaw detection is carried out before leaving the factory.
X-type lower frame has strong torsional resistance, which can adapt to harsh construction sites such as muddy, rocky and uneven ground.
Reinforced track system (rubber track as standard, steel track optional) has a wear life 20% longer than similar products, and the built-in buffer spring of the track tensioner reduces the impact on the undercarriage when passing obstacles.

4. Operator-friendly Cab Design

The cab is ROPS/FOPS certified, with high safety performance:

Equipped with fully adjustable suspension seats, ergonomic low-force joysticks, and a large LCD monitor that displays real-time parameters such as fuel level, water temperature and fault codes.
The cab has excellent sealing performance, the internal operation noise is only 74 dB(A), and it is equipped with a high-power heating and cooling air conditioning system, which greatly reduces the fatigue of long-term operation.
Wide field of view design, standard audible travel and swing alarm, optional rear view camera, ensuring the operator can clearly observe the surrounding construction environment.

5. Low Maintenance Cost

All daily maintenance points are arranged on the ground-accessible side, no need to climb the vehicle for inspection:

Engine oil filter, fuel filter, air filter and hydraulic oil return filter are centrally arranged, which can be replaced quickly.
The hydraulic oil replacement cycle is up to 4000 hours, and the engine oil replacement cycle is 500 hours, which greatly reduces the maintenance time and cost.
Supported by Caterpillar's global 24/7 after-sales service network, the supply of spare parts is sufficient, and the downtime of equipment is effectively reduced.

Typical Application Scenarios

The 306E2 is widely used in:

Municipal works: trench digging for pipeline laying, road patching, sidewalk construction
Landscaping: planting pit digging, site leveling, nursery transplanting, landscape shaping
Urban renovation: small building demolition, construction waste cleaning, narrow space operation in residential areas
Agricultural construction: farmland leveling, irrigation ditch digging, greenhouse infrastructure construction
Small engineering projects: small building foundation digging, material handling, site cleaning

Optional Configurations

Users can customize configurations according to actual needs:

Steel track / rubber track
Different types of buckets (standard bucket, rock bucket, ditch cleaning bucket)
Quick coupler for fast attachment replacement
Auxiliary hydraulic pipeline
Cold zone cab heater
Rear view camera
Boom floating function for ground leveling operations

Non flooded

No accident

Original product

Used Caterpillar 306E2 Excavator

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