Used Caterpillar 307.5Excavator

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The CAT 307.5 is a 7-tonne class mini hydraulic excavator from Caterpillar's Next Generation lineup. It replaced the popular 307E2 and is designed for versatility in tight workspaces, landscaping, utility work, and small-scale construction.

📐 Key Specifications

Parameter	Specification
Operating Weight	~7,370 – 7,500 kg (16,248 – 16,535 lb)
Engine	Cat® C2.7 ACERT® 4-cylinder turbo diesel
Engine Power	48.1 hp (35.9 kW) @ 2,200 rpm
Max Torque	185 Nm (136 lb-ft) @ 1,400 rpm
Bucket Capacity	0.15 – 0.28 m³ (0.20 – 0.36 yd³)
Max Dig Depth	4,110 mm (13.5 ft)
Max Reach	6,470 mm (21.2 ft)
Max Cutting Height	6,100 mm (20.0 ft)
Max Dumping Height	4,500 mm (14.8 ft)
Track Width (Steel)	2,280 mm (7.48 ft)
Track Width (Rubber)	1,800 mm (5.9 ft) — optional
Transport Height	2,560 mm (8.4 ft)
Transport Width	2,280 mm (7.48 ft)
Hydraulic Flow	115 L/min (30.4 gal/min)
Operating Pressure	35,000 kPa (5,076 psi)
Travel Speed	4.8 km/h (3.0 mph) — 2-speed

🔧 Engine Details

Feature	Detail
Model	Cat C2.7 ACERT
Type	4-cylinder, turbocharged, aftercooled diesel
Displacement	2.7 L
Emissions	EPA Tier 4 Final / EU Stage V
Fuel Tank	~120 L (31.7 gal)
Cooling System	12.1 L (3.2 gal)

✅ The engine is fuel-efficient and meets the latest emissions standards. It features an ECO mode that automatically reduces engine speed when full power isn't needed, saving up to 20% fuel.

🏗️ Design & Features

1. Zero Tail Swing (ZTS) Compatible

The 307.5 offers zero tail swing capability (depending on configuration), allowing it to work close to walls, fences, and structures without the rear of the machine swinging out.

2. Compact & Narrow

With a minimum track width of 1,800 mm (rubber tracks), it can fit through standard doorways and gates.
Transport height of just 2.56 m — fits on a standard low-bed trailer without permits in many regions.

3. Swing Boom Option

Available with a swing boom that provides extra reach into tight areas where the boom needs to offset from the centerline.

4. 2-Speed Travel

High speed for road travel
Low speed for precise positioning on job sites

5. Hydraulic Quick Coupler Ready

Optional hydraulic quick coupler allows fast attachment changes (bucket, auger, breaker, grapple, etc.)

6. ROPS/FOPS Cab

Fully enclosed cab with:
- 🌡️ Air conditioning & heating
- 🖥️ 7" LCD monitor with rear-view camera
- 💺 Suspended seat with armrests
- 🔊 Radio/Bluetooth ready
- 💡 LED work lights

7. Auxiliary Hydraulics

2 auxiliary hydraulic lines for powering attachments like hydraulic breakers, augers, rakes, and compactors.

🛡️ Safety & Technology

Feature	Description
Cat GRADE Ready	Optional 2D grade control system for precise digging
Cat Payload	Optional weigh-in-motion system for accurate loading
Security Plus	GPS tracking, engine immobilizer, geo-fencing
Anti-Theft System	Engine shut-off with PIN code
Auto-Idle / ECO Mode	Reduces fuel consumption & noise
Rear-View Camera	Standard on cab models
LED Lighting	Full-perimeter LED lights for night work
Cat Product Link™	Remote machine monitoring & diagnostics

🔩 Available Attachments

Attachment	Use
🪣 Buckets (150mm – 700mm)	General digging, trenching
🔨 Hydraulic Breaker	Demolition, concrete breaking
🔩 Auger / Drill	Post holes, fencing, piling
🪝 Grapple (Thumb)	Material handling, log grabbing
🪠 Rake	Landscaping, leveling
🔄 Tilt Rotator	360° rotation of attachment
🔩 Compactor Plate	Soil/asphalt compaction
🌲 Ripper	Breaking hard ground, roots

📊 Performance Summary

Metric	Value
Dig Force (Boom)	37.4 kN (8,408 lbf)
Dig Force (Arm)	26.2 kN (5,890 lbf)
Dig Force (Bucket)	46.1 kN (10,364 lbf)
Swing Speed	10.2 rpm
Swing Torque	11.5 kNm
Ground Pressure	~35 kPa (with rubber tracks)

✅ Advantages

✔️ Advantage	Detail
🎯 Maneuverability	Excellent in tight urban & residential spaces
💰 Low Operating Cost	ECO mode, efficient engine, easy maintenance
🚛 Easy Transport	Low height, trailer-friendly
🔧 Versatile	Wide range of attachments for many tasks
📱 Connected	Product Link for fleet management
🏢 Comfortable	Spacious cab with climate control
🌍 Emissions Compliant	Tier 4 Final / Stage V

🆚 Comparison: 307.5 vs 307E2 (Predecessor)

Feature	307E2 (Old)	307.5 (New)
Engine	Cat C3.4B	Cat C2.7 ACERT
Power	54 hp	48.1 hp
Emissions	Tier 3	Tier 4 Final
Cab	Basic	Modern LCD, camera, AC
Technology	Basic	Product Link, Grade Ready
Fuel Efficiency	Good	Better (~20% savings with ECO)
Weight	~7,200 kg	~7,370 kg

🏁 Ideal Applications

Application	Why 307.5?
🏠 Residential Construction	Compact, quiet, low tail swing
🌳 Landscaping	Quick coupler, multiple attachments
🔌 Utility Work	Narrow, precise digging
🏚️ Demolition (Small)	Hydraulic breaker attachment
🛣️ Road Repair	Compact, trailer-friendly
🌾 Agriculture	Attachment versatility, low ground pressure
🏗️ Indoor Work	Low height, clean emissions

💰 Approximate Pricing (2024)

Configuration	Approx. Price (USD)
307.5 (Open Canopy)	$65,000 – $75,000
307.5 (Enclosed Cab)	$80,000 – $95,000
307.5 (with Grade/Payload)	$95,000 – $110,000+

(Prices vary by region, dealer, and options)

📝 Summary

The Caterpillar 307.5 is a highly capable, fuel-efficient, and technology-rich mini excavator perfect for contractors who need a compact yet powerful machine. Its combination of zero tail swing, low transport height, ECO mode, modern cab, and wide attachment compatibility makes it one of the best 7-tonne excavators on the market.

Would you like more details on any specific aspect — like attachments, comparison with competitors (Kubota KX080, John Deere 75G, Komatsu PC78), or maintenance schedule? 😊