Used Caterpillar 308E2 Excavator

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Detailed Introduction to Caterpillar 308E2 Compact Hydraulic Excavator

The Caterpillar 308E2 is a core model in Cat’s 8-ton class compact excavator lineup, developed to balance high performance, fuel efficiency, operator comfort and low maintenance cost. Designed for both light and medium-duty worksites, it is widely favored by construction contractors, rental fleet operators, landscaping practitioners and municipal maintenance teams globally.

1. Core Specifications (Standard Configuration)

Parameter	Specification
Operating Weight	7,800 kg – 8,500 kg (varies by cab/canopy, track type and attachment configuration)
Engine Model	Cat C3.3B 4-cylinder turbocharged direct-injection diesel engine
Net Rated Power	49.7 kW (66.6 hp) @ 2,200 rpm
Emission Standard	U.S. EPA Tier 4 Interim / EU Stage IIIB (for low-emission regions); adapted versions for non-regulated markets are available
Bucket Capacity Range	0.22 m³ – 0.52 m³
Maximum Digging Depth (standard arm)	4,260 mm
Maximum Horizontal Reach at Ground Level	6,690 mm
Maximum Dump Height	4,720 mm
Travel Speed (high/low)	4.7 km/h / 2.8 km/h
Drawbar Pull	62 kN
Hydraulic System Working Pressure	35 MPa
Total Hydraulic Flow	150 L/min

2. Performance Advantages

Power System

The 308E2 is equipped with a proven Cat C3.3B engine, which adopts cooled exhaust gas recirculation (EGR) and diesel oxidation catalyst (DOC) aftertreatment technology, no diesel particulate filter (DPF) is required, which greatly reduces later maintenance costs. Compared with the previous generation 308E, its fuel efficiency is improved by up to 10% under the same working conditions.

Hydraulic System

It adopts Caterpillar’s proprietary load-sensing hydraulic system with independent flow distribution, which delivers precise, smooth and responsive operation, even when performing compound actions (e.g. boom lifting + arm swinging + bucket curling) simultaneously. Optional functional configurations include:

SmartBoom Function: Allows free floating of the boom, ideal for grading, slope finishing and ground leveling tasks;
Fine Control Mode: Reduces operating speed by 30% for high-precision works such as pipe laying and fragile material handling;
Boom Offset System: Supports 70° left and 55° right swing of the boom, enabling operation close to walls or in narrow spaces without repositioning the whole machine, greatly improving efficiency for trench digging and urban renovation works.

Attachment Compatibility

The machine comes with pre-installed auxiliary hydraulic lines, and supports optional quick couplers, which can switch between buckets, hydraulic breakers, augers, grapples, rippers and other attachments in less than 30 seconds, adapting to diverse working scenarios.

3. Operator Comfort & Safety

The 308E2’s cab meets global ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) certification standards, ensuring maximum operator safety in harsh worksites:

The ergonomically designed suspended seat is fully adjustable, with multi-position adjustable armrests to reduce fatigue during long hours of operation;
Internal operating noise is controlled at only 74 dB(A), one of the lowest in its class, paired with a high-performance sealed air conditioning system that cools or heats the cab quickly, and blocks dust and external noise effectively;
Panoramic glass design provides unobstructed 360° visibility, optional rearview camera and LED work lights further improve safety for night operation and reversing;
Hydraulic lock lever and travel alarm are standard: when the lock lever is activated, all operating actions are disabled to avoid misoperation when getting on and off the machine; the travel alarm automatically sounds when the machine moves to remind surrounding personnel.A low-cost canopy version is also available for use in warm regions or low-risk worksites.

4. Durability & Maintenance Convenience

Caterpillar’s industry-leading structural design guarantees long service life even under high-intensity operation:

The boom, stick and chassis are all made of high-tensile steel, with stress relief treatment at all welding joints, effectively avoiding structural cracking under heavy load; users can choose steel tracks for rugged construction sites, or rubber tracks for road operations that require no damage to the pavement.
All daily maintenance points are designed to be accessible from ground level, no climbing is needed for checking engine oil, coolant, hydraulic oil level and air filter, greatly reducing maintenance time.
Extended service intervals: engine oil change every 500 operating hours, hydraulic oil change every 5,000 hours, hydraulic return filter replacement every 1,000 hours, reducing downtime and operation cost significantly.
Electrophoretic coating is applied to the whole body frame, with strong corrosion resistance, suitable for use in coastal or humid working environments. Optional password anti-theft system is also available to prevent equipment theft on unattended worksites.

5. Digital & Efficiency Technologies

Cat Product Link™ Telematics System: Standard on most configurations, it supports remote real-time monitoring of equipment location, operating hours, fuel consumption, fault codes and maintenance reminders, helping fleet managers optimize scheduling, reduce idle time and avoid unplanned downtime.
Auto Idle Shutdown Function: Automatically shuts off the engine after a preset period of idling, reducing unnecessary fuel consumption and extending engine service life.
3 Switchable Working Modes: Users can choose between High Power mode (for heavy load works such as rock excavation and demolition), Standard mode (for balanced power and fuel efficiency in daily operations) and Economy mode (for light load works such as landscaping and material handling) according to actual working conditions, which can reduce comprehensive fuel consumption by up to 15%.

6. Main Application Scenarios

Municipal engineering: Trench digging for cable/pipeline laying, sidewalk repair, small-scale road maintenance;
Landscaping: Tree pit digging, terrain shaping, water feature construction, site clearing;
Small construction projects: Foundation excavation for low-rise buildings, material handling, small structure demolition;
Agricultural work: Irrigation ditch digging, farmland leveling, agricultural material loading and unloading;
Rental market: Its high versatility, durability and low maintenance cost make it one of the most popular compact excavator models for rental fleets;
Narrow space operation: Suitable for basement construction, old urban area renovation and indoor demolition works due to its compact size.

Core Competitive Advantages

The Cat 308E2 has a much higher residual value (15-20% higher than most competing models in the same class) due to its outstanding reliability, Caterpillar’s global after-sales service and spare parts supply network, making it a cost-effective choice for both individual operators and large fleet owners.

Non flooded

No accident

Original product

Used Caterpillar 308E2 Excavator

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