Used Caterpillar 307 Excavator

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Caterpillar 307 Series Compact Hydraulic Excavator: Detailed Introduction

Overview

The Caterpillar (Cat) 307 is a flagship 7-ton class compact hydraulic excavator developed and manufactured by Caterpillar Inc., the global leader in construction and mining equipment. First rolled out in the early 2000s, the model has undergone multiple generational upgrades, including the 307C, 307D, 307E, 307E2, and the latest 307 CR (Compact Radius) variant, to meet varying emission standards and work demands across global markets. It is designed to deliver an optimal balance of power, maneuverability, fuel efficiency and durability for light to medium-duty works, making it one of the best-selling small excavators in its weight class worldwide.

Key Standard Specifications (307 CR, Tier 4 Final/Stage V Variant)

Item	Parameter
Operating Weight	6,800 – 7,200 kg (varies by configuration)
Engine Model	Cat C2.4 4-cylinder turbocharged diesel engine
Net Rated Power	43 kW (57 hp) @ 2,200 rpm
Emission Standard	U.S. EPA Tier 4 Final / EU Stage V (Tier 3 available for emerging markets)
Bucket Capacity Range	0.12 – 0.34 m³
Maximum Digging Depth	4,080 mm
Maximum Reach at Ground Level	6,210 mm
Maximum Dump Height	4,350 mm
Bucket Breakout Force	44 kN
Arm Breakout Force	30 kN
Travel Speed	2.4 km/h (low) / 4.5 km/h (high)
Upper Structure Swing Speed	11 rpm
Fuel Tank Capacity	125 L
Hydraulic System Operating Pressure	28,000 kPa
Tail Swing Radius	1,750 mm (zero tail swing option available)

Core Performance Advantages

High Efficiency & Low Fuel ConsumptionThe model is equipped with Cat’s proprietary load-sensing hydraulic system, which delivers precise flow matching between the engine output and actual work load, cutting fuel consumption by 10-15% compared to older 7-ton Cat excavator models. Standard auto-idle and auto-engine shutdown functions further reduce unnecessary fuel waste during non-operating periods, lowering daily operating costs by up to 20% for operators.
Strong Working PerformanceWith industry-leading breakout force and a robust structural design, the 307 can easily handle hard soil, compacted gravel, light concrete demolition and heavy material lifting tasks. Its rated lifting capacity reaches 1,200 kg at a 3m working radius and 1.5m lifting height, meeting the demands of most small and medium construction projects.
Excellent ManeuverabilityThe compact radius design gives the 307 an extremely small turning radius, allowing it to operate smoothly in confined spaces such as urban narrow roads, indoor demolition sites, residential yards, and underground garages without damaging surrounding facilities, making it ideal for urban renovation works.

Operator Comfort & Safety

The cab is certified to ISO ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) standards as standard, ensuring operator safety in harsh work environments.
The pressurized, sealed cab reduces internal noise to below 75 dB(A), and rubber engine mounts plus insulated floor mats minimize vibration transmission, greatly reducing operator fatigue during long shifts.
Ergonomic features include an adjustable suspension seat, low-force adjustable joysticks, a high-definition LCD monitor displaying real-time operational data, a 12V power outlet, and multiple storage compartments for personal items.
Standard safety configurations include a rear-view camera, emergency stop button, anti-slip steps and handrails, travel alarm, and swing lock function for safe transport.

Common Application Scenarios

The Cat 307 is versatile enough to cover a wide range of work scenarios:

Municipal engineering: Trench digging for water supply, drainage and cable pipes, road repair, sidewalk construction
Landscaping and agriculture: Land clearing, tree planting, pond excavation, farmland transformation, greenhouse foundation work
Residential construction: House foundation digging, small building demolition, site cleaning, material handling
Special works: Indoor building demolition, underground garage construction, renovation in restricted work zones

Maintenance & Total Cost of Ownership Advantages

Easy routine maintenance: All daily inspection points (engine oil level, coolant level, air filter, hydraulic oil level) are accessible from ground level, eliminating the need to climb onto the upper structure for daily checks.
Extended service intervals: Engine oil and filter changes are required every 500 operating hours, while hydraulic oil change intervals reach 5,000 hours, greatly reducing scheduled maintenance time and costs.
Durable components: The high-strength X-shaped lower frame, reinforced boom and arm with wear-resistant plates, and sealed lubricated track links ensure a long service life even under harsh working conditions.
Global support: Caterpillar’s world-spanning dealer network provides 24/7 after-sales service, genuine spare parts supply and professional technical support. The Cat 307 also retains extremely high resale value, with residual value typically staying above 60% after 3 years of normal operation.

Optional Configurations

To adapt to varied work demands, the 307 supports a wide range of optional configurations and attachments:

Work tools: Hydraulic breaker, auger, grapple, ripper, tiltrotator, compactor plate, etc. Cat’s quick coupler system allows tool switching within 30 seconds.
Cab variants: Open canopy for hot climate markets, heated cab with seat heating for cold regions.
Undercarriage options: Steel track for heavy-duty works, rubber track to avoid damage to asphalt and paved roads.
Additional accessories: Extra counterweight for higher lifting demands, extended front dozer blade with float function, 3D grade control system for precision digging works.

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Original product

Used Caterpillar 307 Excavator

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