Used Caterpillar 308E2 Excavator

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Detailed Introduction of Caterpillar 308E2 CR Mini Excavator

The Caterpillar 308E2 CR (Compact Radius) is a classic 8-ton class small crawler excavator under Caterpillar's E2 series product lineup, designed for high-efficiency operations in narrow spaces. It is widely recognized by small construction contractors, equipment rental operators and municipal maintenance teams around the world for its high reliability, strong power, fuel efficiency and multi-scenario adaptability.

1. Key Specifications

Parameter	Specific Value
Operating Weight	7,800 – 8,500 kg (depends on cab and attachment configuration)
Gross Rated Power	49.7 hp (37.1 kW) @ 2,200 rpm
Standard Bucket Capacity	0.26 – 0.52 m³
Maximum Bucket Digging Force	61.8 kN
Maximum Arm Digging Force	38.2 kN
Max Digging Depth (standard arm)	4,340 mm (14.2 ft)
Max Digging Reach	6,960 mm (22.8 ft)
Max Dump Height	4,990 mm (16.4 ft)
Tail Swing Radius	1,470 mm
Swing Speed	11 rpm
Travel Speed	2.4 / 4.5 km/h (low/high gear)
Emission Standard	EU Stage IIIA / US EPA Tier 4 Interim

2. Powertrain System

The 308E2 is equipped with Caterpillar's self-developed C3.3B DIET 4-cylinder direct-injection diesel engine, which has strong low-speed torque output and excellent adaptability to high-altitude, high-temperature and high-dust construction environments.

Optimized combustion design improves fuel efficiency by 6-8% compared with the previous generation 308E model, reducing daily operating costs
Standard auto-idle and optional auto-engine-shutdown functions cut unnecessary fuel consumption during standby
The engine cooling system adopts an independent heat dissipation design, which can maintain stable operation even under long-term full load conditions.

3. Hydraulic System

It adopts Caterpillar's exclusive load-sensing hydraulic system with independent flow distribution, which brings industry-leading operation smoothness:

The main pump delivers a maximum flow of 154 L/min, with fast response speed, supporting smooth simultaneous operation of multiple actions (boom lifting, arm retracting, swing, etc.) without power interference
The hydraulic system is equipped with an automatic oil temperature adjustment module, which effectively extends the service life of hydraulic components
The optional auxiliary hydraulic pipeline supports the operation of multiple attachments, including breakers, augers, grapples and clamps.

4. Structural Design & Operational Adaptability

The core highlight of the 308E2 is its compact radius design, which is extremely suitable for narrow space construction:

The ultra-small tail swing radius of 1,470 mm can realize free operation in scenes such as urban roads, residential areas, indoor demolition and tunnel construction
The reinforced X-type lower frame and box-type boom/arm have strong impact resistance, adapting to harsh construction conditions such as earthwork loading and small-scale mining
Standard adjustable rubber tracks reduce damage to municipal pavement, and steel tracks with extended track shoes are optional for complex soft ground conditions
Reserved quick coupler interface supports 30-second fast replacement of attachments, greatly expanding the application range of the equipment.

5. Cab & Ergonomics

The cab meets ROPS/FOPS safety certification, and provides a comfortable operating experience for long-term work:

Full sound insulation and shock absorption design, the internal operating noise is controlled below 75 dB(A)
Fully adjustable suspension seat with lumbar support, adapting to operators of different heights and reducing work fatigue
High-definition LCD monitor on the right console displays real-time operating parameters, fault codes and maintenance reminders, helping operators grasp the equipment status in time
Low-effort joystick with sensitive response, and all control buttons are arranged in line with operating habits, reducing operating burden.

6. Maintenance Convenience

Caterpillar has optimized the maintenance design to reduce the long-term operating cost of users:

All core maintenance points (oil filter, fuel filter, air filter, hydraulic oil level check port, etc.) are arranged at ground-accessible positions, no need to climb the equipment to complete daily inspection
The maintenance interval of engine oil and filter is extended to 500 hours, and the hydraulic oil replacement interval is up to 4,000 hours, which reduces maintenance frequency and cost
Supported by Caterpillar's global after-sales network, users can get timely parts supply and technical support in almost all regions.

7. Safety & Environmental Performance

In addition to the ROPS/FOPS certified cab, it is also equipped with travel alarm, swing alarm and optional rearview camera to eliminate operation blind spots and avoid safety accidents
The prominent emergency stop button can cut off power and shut down the engine immediately in case of emergency
Fully sealed hydraulic system avoids oil leakage pollution, and the external operation noise meets the EU urban construction noise standard, suitable for construction in noise-sensitive areas such as residential areas and schools.

8. Main Application Scenarios

The 308E2 is suitable for a wide range of operation scenarios:

Municipal engineering: road repair, pipeline laying, green belt construction, etc.
Landscape construction: garden excavation, pond digging, tree planting hole drilling
Demolition work: small building demolition, interior decoration demolition with breakers
Agricultural construction: farmland transformation, orchard management, greenhouse construction
Equipment rental market: its high reliability and low failure rate make it one of the most popular small excavator models in the global rental market.

Summary

The Caterpillar 308E2 mini excavator has excellent comprehensive performance, low whole-life cycle cost and strong multi-scenario adaptability, and is an ideal choice for users who need high-efficiency small construction equipment.

Non flooded

No accident

Original product

Used Caterpillar 308E2 Excavator

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