Used Caterpillar 307E2 Excavator

Reading: 10

📌 1. OVERVIEW

Parameter	Details
Model	CAT 307E2
Class	Mini / Compact Excavator
Weight Class	~7 Ton (7,000 kg)
Manufacturer	Caterpillar Inc.
Series	E2 Generation (upgraded from 307E)
Launched	~2015
Primary Use	Utility work, landscaping, construction, demolition, trenching, pipe laying

The 307E2 is one of Cat's most popular compact excavators, designed to deliver big-machine performance in a small, maneuverable package. It's ideal for tight-space jobs where larger excavators can't fit.

📌 2. ENGINE SPECIFICATIONS

Specification	Details
Engine Model	Cat® C3.3B
Type	4-Cylinder, Turbocharged Diesel
Displacement	3.3 Liters (201.3 in³)
Net Power	55.6 HP (41.5 kW) @ 2,200 rpm
Emissions	EPA Tier 4 Final / EU Stage V
Fuel Tank	~110 L (29 gal)
Cooling System	Pressurized, thermostatically controlled
Starting System	Electric start

✅ The engine is fuel-efficient and meets the strictest emission standards with no DPF regeneration needed in most applications — reducing downtime.

📌 3. OPERATING WEIGHT & DIMENSIONS

Specification	Metric	Imperial
Operating Weight	~7,050 kg	15,543 lb
Overall Length (w/ boom)	~6,010 mm	19 ft 9 in
Width (tracks retracted)	~1,800 mm	5 ft 11 in
Height (to cab top)	~2,600 mm	8 ft 6 in
Ground Clearance	~340 mm	13.4 in
Tail Swing Radius	~1,300 mm (Zero Tail Swing)	~4 ft 3 in

✅ Zero Tail Swing design means the upper structure does NOT swing beyond the track width — perfect for working near walls, fences, and buildings.

📌 4. HYDRAULIC SYSTEM

Specification	Details
System Flow	~83 L/min (22 gal/min)
Operating Pressure	34,500 kPa (5,000 psi)
Auxiliary Hydraulics	Available (pattern change, thumb, breaker)
Hydraulic Tank	~65 L (17 gal)

✅ The hydraulic system is powerful enough to run attachments like hydraulic breakers, augers, grapples, and thumbs simultaneously.

📌 5. DIGGING PERFORMANCE

Specification	Metric	Imperial
Max Digging Depth	~4,120 mm	13 ft 6 in
Max Reach (Ground Level)	~5,640 mm	18 ft 6 in
Max Dump Height	~4,320 mm	14 ft 2 in
Max Digging Force (Boom)	~38 kN	8,542 lbf
Max Digging Force (Arm)	~27 kN	6,070 lbf
Max Bucket Capacity	0.16 – 0.33 m³	0.21 – 0.43 yd³

Boom Options	Length
Standard Boom	2,450 mm (8 ft)
Short Boom (optional)	1,730 mm (5 ft 8 in) — for ultra-tight spaces

📌 6. UNDERCARRIAGE

Specification	Details
Track Type	Steel (Rubber track option available)
Track Width	1,800 mm (71 in) — Adjustable (3 positions)
Track Length on Ground	~2,340 mm (92 in)
Shoe Options	400mm, 450mm, 500mm, 600mm

✅ Adjustable track width lets you:
Narrow → Fit through tight gates/doorways
Wide → Better stability on soft ground

📌 7. CAB & OPERATOR COMFORT

Feature	Details
Cab Type	Fully Enclosed, ROPS/FOPS Certified
Air Conditioning	✅ Standard
Heater	✅ Standard
Seat	Suspended, adjustable, with armrests
Controls	Pilot-operated joysticks (smooth & precise)
Display	LCD monitor with diagnostics, fuel, hours, etc.
Noise Level	~72 dB(A) — relatively quiet
Visibility	Excellent all-around visibility with large glass area
Sound Suppression	Insulated cab reduces operator fatigue

✅ Cat is well-known for having some of the most comfortable cabs in the compact excavator class.

📌 8. KEY FEATURES & TECHNOLOGY

Feature	Description
🔧 Cat Product Link™	Built-in telematics — tracks location, hours, fuel, diagnostics remotely
🔒 CAT Security	Engine immobilizer / anti-theft system
⚡ Auto-Idle	Engine automatically reduces RPM when not working → saves fuel
🔄 Pattern Change	Quick coupler allows bucket change in seconds (no pins)
👍 Thumb Ready	Factory-wired for hydraulic thumb
🛞 Rubber Track Option	For indoor/paved surface work (no damage to floors)
📐 2D/3D Grade Ready	Can be equipped with GPS grading technology
🔌 Auxiliary Hydraulic Lines	For breakers, augers, grapples, rakes, etc.
🛡️ Blade Ready	Dozer blade attachment available

📌 9. ATTACHMENT COMPATIBILITY

The 307E2 can use a wide range of Cat and third-party attachments:

Attachment	Use Case
🪣 Buckets (160mm – 600mm)	Digging, grading, loading
👍 Hydraulic Thumb	Grabbing pipes, logs, debris
🔨 Hydraulic Breaker	Demolition, concrete breaking
🌀 Auger	Post holes, fence posts
🪚 Hydraulic Saw	Cutting concrete, rebar
🪝 Grapple	Material handling, sorting
🪮 Rake	Landscaping, leveling
🛡️ Dozer Blade	Grading, pushing material
🔩 Compactor	Trench compaction
🪣 Tiltrotator	360° rotation of attachment

📌 10. COMPETITORS COMPARISON

Model	Weight	Power	Dig Depth
Cat 307E2	7,050 kg	55.6 HP	4.12 m
John Deere 75G	7,470 kg	51 HP	4.09 m
Komatsu PC78US-11	7,790 kg	54 HP	4.27 m
Kubota KX080-4	7,950 kg	47.7 HP	4.14 m
Doosan DX80R-7	8,200 kg	54 HP	4.40 m

🏆 The 307E2 is generally considered the best in class for operator comfort, fuel efficiency, and resale value.

📌 11. PROS & CONS

✅ PROS

Advantage	Detail
Excellent fuel efficiency	~3-4 L/hr typical
Zero tail swing	Works in tight spaces
Best-in-class cab comfort	Low noise, A/C, great seat
Strong resale value	Cat holds value better than competitors
Reliable Cat engine	Proven C3.3B — low maintenance
Telematics built-in	Product Link for fleet management
Wide attachment range	Very versatile machine

❌ CONS

Disadvantage	Detail
Higher purchase price	More expensive than some competitors
Limited digging depth vs larger class	~4.1m max (vs 5m+ on 8-ton class)
Track-only undercarriage	No wheel option (unlike some competitors)
Service cost	Cat parts/service can be pricier

📌 12. TYPICAL APPLICATIONS

Application	Example
🏗️ Residential Construction	Foundation excavation, trenching
🌳 Landscaping	Tree planting, grading, drainage
🔌 Utility Work	Pipe laying, cable trenches
🏚️ Demolition	Small building tear-down (with breaker)
🛤️ Road Work	Trench digging, manhole work
🌾 Agriculture	Ditch cleaning, fence building
🏠 Renovation	Indoor demolition (with rubber tracks)

📌 13. PRICING (Approximate — 2024)

Configuration	Price (USD)
New — Basic (Steel Tracks)	$75,000 – $85,000
New — Full Cab + A/C + Aux Hyd	$85,000 – $95,000
Used (2,000–4,000 hrs)	$45,000 – $65,000
Rental (Daily)	$250 – $400/day

Prices vary by region, dealer, and configuration.

📌 14. SUMMARY

Category	Rating (out of 5)
Power	⭐⭐⭐⭐
Digging Depth	⭐⭐⭐⭐
Maneuverability	⭐⭐⭐⭐⭐
Operator Comfort	⭐⭐⭐⭐⭐
Fuel Efficiency	⭐⭐⭐⭐⭐
Versatility	⭐⭐⭐⭐⭐
Value/Resale	⭐⭐⭐⭐⭐

🎯 Bottom Line:
The Caterpillar 307E2 is arguably the best 7-ton mini excavator on the market. It combines Cat reliability, exceptional comfort, fuel efficiency, and incredible versatility in a compact machine that fits almost anywhere. Whether you're a contractor, landscaper, or rental company — the 307E2 is a workhorse that pays for itself.

Would you like me to go deeper into any specific area — like comparison with a specific competitor, attachment recommendations, or maintenance schedule? 🚜