Used Volvo 300D Excavator

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Here is a detailed introduction to the Volvo EC300D (often referred to as the Volvo 300D series excavator) in English.

Please note: Volvo's nomenclature for crawler excavators typically places the letters before the numbers (e.g., EC300D). The following introduction covers the EC300D, which fits your query for a "VOLVO 300D" crawler excavator.

The Volvo EC300D Crawler Excavator: A Comprehensive Overview

The Volvo EC300D is a 30-ton class crawler excavator renowned for its exceptional fuel efficiency, powerful hydraulic performance, and operator comfort. As part of Volvo’s D-Series, it was engineered to deliver high productivity and low operating costs, making it a popular choice for heavy construction, quarrying, and large-scale utility work.

This machine is the successor to the highly successful EC290C, and it represents a significant leap forward in technology, particularly in engine and hydraulics integration.

Key Features and Innovations

1. Engine and Fuel Efficiency

At the heart of the EC300D is the Volvo D8H (later models may use D8M) turbocharged, 6-cylinder diesel engine.

Power Output: It delivers a net power of 225 hp (168 kW) at a low engine speed of 1,700 rpm.
V-ACT (Volvo Advanced Combustion Technology): This system ensures clean, efficient combustion by precisely controlling fuel injection and air intake, resulting in lower emissions and reduced fuel consumption without sacrificing power.
ECO Mode: A standard feature that optimizes the hydraulic system to reduce flow and pressure losses, contributing to a fuel efficiency improvement of up to 9% compared to the previous C-Series model without a loss in cycle times.
Engine Speed Control: The engine automatically idles when the controls are inactive for a preset time, further saving fuel and reducing noise.

2. Advanced Hydraulic System

The EC300D features a state-of-the-art hydraulic system designed for perfect harmony between the engine and pump output.

Variable Displacement Pumps: Two load-sensing, flow-sharing axial piston pumps supply oil on demand, ensuring that the exact amount of oil required for a movement is delivered, minimizing energy loss.
Integrated Work Mode System: The operator can choose from different work modes (e.g., Idle, Fine, General, Heavy) using the keypad. These modes adjust engine speed and pump flow for the specific task.
Priority Valve: A hydraulic priority valve gives priority to the boom and arm functions, ensuring rapid, combined movements for smooth and fast truck loading.
Combined Boom and Arm Flow: A boom and arm priority system provides immediate response and controllability, particularly in demanding trenching and lifting applications.

3. Operator Comfort and Safety

The D-Series cab is a benchmark for visibility and ergonomics.

ROPS/FOPS Certified Cab: The spacious cab meets Roll-Over and Falling-Object Protective Structure safety standards.
Excellent Visibility: Large, expansive glass areas and a slim cab pillar design provide outstanding all-around visibility. A standard rear-view camera with a color LCD monitor enhances safety on the jobsite.
Comfort Drive Control (CDC): An optional feature that significantly reduces vibration and shock transmitted to the operator by using a hydraulic accumulator system to dampen boom and arm motions.
Climate Control: An advanced, automatic climate control system maintains a consistent temperature with 14 air vents for optimal air distribution.
Ergonomic Controls: The joysticks are low-effort and ergonomically positioned on adjustable consoles. The multifunction keypad allows easy navigation of machine settings.

4. Structural Durability and Serviceability

Volvo designs its excavators for tough environments.

Heavy-Duty Undercarriage: The robust X-shaped box frame is built for exceptional torsion resistance. Tracks are sealed and lubricated, with robust track links and rollers designed for long life.
Reinforced Superstructure: The upper frame uses a welded, high-tensile steel structure with integrated lifting lugs for safe hoisting.
Easy Maintenance: All service points are grouped and accessible from ground level. The engine hood opens wide vertically, and side doors offer easy access to filters, lubrication points, and the cooling package. The high-capacity cooling package features a hydraulically driven, electronically controlled fan that is reversible for easy cleaning of the radiator, charge air cooler, and oil cooler.

Technical Specifications (Typical Configuration)

Operating Weight: Approximately 30,500 - 34,500 kg (67,240 - 76,060 lbs) depending on configuration.
Engine: Volvo D8H, 6-cylinder, 7.7 L, turbocharged diesel with intercooler.
Max Engine Power: 168 kW (225 hp) @ 1,700 rpm.
Bucket Capacity: 1.0 – 2.2 m³ (1.3 – 2.9 yd³).
Max Digging Reach: ~10.7 m (35 ft 1 in).
Max Digging Depth: ~7.3 m (24 ft).
Breakout Force (SAE): ~190 kN (42,700 lbf).
Arm Tearout Force (SAE): ~160 kN (36,000 lbf).
Tractive Force: ~262 kN (58,900 lbf).
Swing Speed: 10.2 rpm.
Max Travel Speed: 5.5 km/h (3.4 mph).

Target Applications

The Volvo EC300D is a versatile machine perfectly suited for:

General Construction: Basement excavation, site preparation, and trenching.
Heavy Lifting: Placing pipes, manholes, and heavy materials with its impressive lifting capacity.
Quarrying and Aggregates: Loading blasted rock and feeding crushers.
Road Building and Demolition: With a high-reach boom option available for demolition tasks.

In summary, the Volvo EC300D stands out as a machine that successfully balances brute force with surgical precision. Its industry-leading fuel economy, combined with a supremely comfortable operator environment and Volvo’s legendary build quality, makes it a benchmark in the 30-ton excavator class. It is a direct predecessor to the current E-Series (EC300E), which builds upon this very successful foundation with even more advanced electro-hydraulics and connectivity.

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Used Volvo 300D Excavator

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