Used CAT 304C CR Excavator for Sale

Used CAT 304C CR excavator for sale

This used CAT 304C CR is a heavy-duty 4-ton class mini excavator that serves as the strategic bridge between compact garden-style diggers and full-sized utility machines. Engineered as part of Caterpillar’s legendary C-Series, this machine was built for contractors who find 3-ton units too light for deep trenching but require the zero-tail swing flexibility that larger utility excavators often lack. It is a 'true-radius' machine, meaning the body rotates entirely within the width of its tracks, providing a level of site safety that is unmatched in mid-range excavation. For the international equipment buyer, this specific unit represents one of the most mechanically reliable generations in Caterpillar's history. Before the introduction of overly complex electronic Tier 4 sensor arrays, the C-Series focused on raw hydraulic force and structural over-engineering.

Offer price
USD $10,000
Availability
In stock
Reference operating weight
4t
Reference bucket capacity
0.11m3
Catalog year label
2025
Catalog hour-meter label
500

The Legacy of C-Series Over-Engineering

The 'C' designation in this model is a marker of extreme durability and thick-steel construction. Unlike newer models, this 4-ton mini excavator features a reinforced boom and stick designed for heavy-duty prying. The vertical component layout achieves a zero-tail footprint without sacrificing engine access. Our pre-sale audit inspects pivot points for deflection, ensuring precision grading where centimeters matter.

Powerplant: Mitsubishi-Rooted Reliability

Powered by the Cat-branded S4Q2 engine, this 4-cylinder unit is known for high torque and low vibration. Delivering approx 30.6 kW (41 hp), the naturally aspirated S4Q2 lacks complex after-treatment systems (DPF), making it resilient to varied fuel qualities. We perform load-tests to ensure the engine maintains compression even in temperatures exceeding 40°C, ideal for tropical climates.

Load-Sensing Hydraulic Precision

The LS hydraulic logic separates the C-series from competitors, offering variable flow based on real-time load. We verify the 'stall-speed' to ensure the engine doesn't bog down under maximum cylinder load. This allows simultaneous swing, lift, and travel with automotive-like control. Our audit confirms the machine maintains approx. 95% of its original factory breakout force (33 kN).

Digging Depth and Lifting Capacity: The 4-Ton Advantage

This unit offers a 3.4-meter digging depth, providing a strategic advantage over 3-ton machines. The extra reach is critical for sewer and foundation work. A wider undercarriage and lower center of gravity provide a stable platform for lifting heavy pipes. We inspect boom cylinders for 'creep' to ensure they hold position under load during critical site operations.

Operator Environment: Comfort-First Cab

The cab is designed to feel like a full-sized machine with spacious floor area and pilot wrist controllers. Interior condition is our proxy for maintenance history; we ensure all digital displays and safety lockouts are functional. For hot climates, we verify air-conditioning performance. A clean interior indicates a machine that has been respected by its previous users.

Strategic Application Scenarios

Recommended for bridge repair, interior demolition, and deep septic/sewer installations. The zero-tail design allows operation next to live traffic barriers or property lines. High torque makes it capable of pulling stumps that would stall smaller machines. It is the 'safe choice' for urban environments where public proximity is a factor.

Structural Integrity and Undercarriage Life

The X-frame undercarriage is high-tensile steel designed to shed debris and protect drive motors. We measure final drive wear and idler tension. Particular attention is paid to drive sprockets; we replace them if worn before delivery. Most units feature heavy-duty rubber tracks for work on finished city surfaces.

Attachment Versatility: The Tool-Carrier Logic

The 304C CR retains high value because it is factory-wired for high-flow attachments. Auxiliary lines plumbed to the stick allow for hammers, augers, or thumbs. We verify auxiliary flow-rates to ensure compatibility. This turn-key approach ensures the machine earns revenue from day one.

Global Shipping and Landed-Cost Strategy

Logistics are streamlined by the CR 'shipping envelope'; it fits comfortably in standard containers. A 20GP container holds one unit plus spares. For maximum efficiency, four units can be consolidated into a 40HQ container, lowering landed costs by 65%. We handle all Port of Shanghai export documentation and inspections (SABER/BV/CCIC).

Why the C-Series is a Blue-Chip Asset?

Caterpillar C-Series machines hold value like gold because their engineering is universally understood. We selectively source units from domestic Chinese projects with original paint and documented service. This selective 'Yard Selection Protocol' ensures you receive iron with at least substantial productive life life remaining.

CAT 304C CR buyer FAQ

What is the maximum digging depth of the CAT 304C CR?

The machine can dig to approximately 3,400 mm (11.2 feet), offering significantly more reach than standard 3-ton mini excavators.

Is the engine in the 304C CR easy to service?

Yes, the 4-cylinder Mitsubishi S4Q2 is naturally aspirated and simple to maintain, lacking the complex DPF systems found in newer models.

Does 'CR' mean the machine can work against a wall?

Yes. The Compact Radius design ensures the rear of the machine does not extend past the tracks, allowing safe rotation in narrow alleys.

Can I ship this machine in a standard container?

Yes, one unit fits in a 20GP container. For wholesale orders, four units fit in a 40HQ container for the best shipping value.

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