Used Caterpillar 303.5EExcavator

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📌 1. OVERVIEW

The Caterpillar 303.5E2 CR (Compact Radius) is a 3.5–4 ton class mini excavator designed for tight-space operations. It is one of Cat's most popular compact excavators, widely used in landscaping, utility work, construction, rental fleets, and residential excavation. The "E2" is the latest generation (replacing the older 303.5E), featuring updated engines and emissions compliance.

Feature	303.5E (Old)	303.5E2 (Current)
Engine	Cat C1.1 ACERT	Cat C1.1 ACERT (updated)
Emissions	Tier 4 Final / Stage IIIB	Tier 4 Final / Stage V
Weight	~3,300 kg	~3,690 kg (8,135 lb)
Zero Tail Swing	✅ Yes	✅ Yes

📌 2. ENGINE SPECIFICATIONS

Parameter	Specification
Engine Model	Cat® C1.1 ACERT® Diesel
Type	3-Cylinder, Turbocharged, Aftercooled
Displacement	1.1 Liters (67 ci)
Net Power	18 kW (24.3 HP) @ 2,200 rpm
Emissions	EPA Tier 4 Final / EU Stage V (E2)
Fuel Tank Capacity	50 L (13.2 gal)
Cooling System	Liquid-cooled
Starting	Electric start

🔧 The engine is compact, fuel-efficient, and requires no DPF (Diesel Particulate Filter) regeneration in most operating conditions — reducing maintenance.

📌 3. OPERATING SPECIFICATIONS (303.5E2)

Parameter	Value
Operating Weight	3,690 kg (8,135 lb)
Max Digging Depth	3,650 mm (12 ft 0 in)
Max Reach (Ground Level)	5,640 mm (18 ft 6 in)
Max Digging Height	5,410 mm (17 ft 9 in)
Max Dump Height	3,850 mm (12 ft 8 in)
Max Digging Force (Boom)	21.8 kN (4,900 lbf)
Max Digging Force (Arm)	15.4 kN (3,460 lbf)
Boom Swing Angle	Zero Tail Swing (ZTS) — No overhang at rear
Ground Clearance	340 mm (13.4 in)
Track Gauge	1,480 mm (4 ft 10 in)

📌 4. HYDRAULIC SYSTEM

Parameter	Specification
System Pressure	210 bar (3,046 psi)
Pump Type	Variable displacement piston pump
Total Hydraulic Flow	80 L/min (21.1 gpm)
Auxiliary Hydraulic Flow	41 L/min (10.8 gpm)
Aux. Pressure	210 bar (3,046 psi)
Hydraulic Quick Coupler	Optional (Cat? or universal)

🔌 The auxiliary hydraulic circuit powers attachments like augers, breakers, grapples, and thumbs — making it extremely versatile.

📌 5. BUCKET CAPACITIES

Bucket Type	Capacity (m³)	Capacity (yd³)
Digging Bucket (Standard)	0.06 – 0.14 m³	0.08 – 0.18 yd³
GP (General Purpose) Bucket	0.10 m³	0.13 yd³
Narrow Bucket (24" / 600mm)	0.04 m³	0.05 yd³
Grading/Trenching Bucket	0.08 m³	0.10 yd³

📌 6. UNDERCARRIAGE & TRACKS

Feature	Specification
Track Type	Steel tracks (standard) / Rubber tracks (optional)
Track Width	300 mm (11.8 in) or 400 mm (15.7 in)
Number of Rollers	2 per side (top) + 1 idler + 1 drive sprocket
Rubber Track Option	400 mm width — ideal for pavement, indoor work, and sensitive surfaces
Ground Pressure	~32 kPa (4.6 psi) with rubber tracks

📌 7. DIMENSIONS & TRANSPORT

Parameter	Value
Transport Length	4,230 mm (13 ft 11 in)
Transport Width	1,480 mm (4 ft 10 in)
Transport Height	2,470 mm (8 ft 1 in)
Tail Swing Radius	0 mm (Zero Tail Swing) ✅
Min. Turning Radius (Outside)	1,960 mm (6 ft 5 in)

✅ Zero Tail Swing is a MAJOR advantage — it can work flush against walls, fences, and buildings without the rear swinging out.

📌 8. CAB & OPERATOR COMFORT

Feature	Details
Cab Type	Enclosed ROPS/FOPS cab (optional canopy)
Climate Control	Heater & A/C (optional)
Seat	Suspended, adjustable, with armrests
Controls	Joystick controls (proportional)
Display	LCD monitor with diagnostics, fuel level, engine hours
Sound Level (Inside Cab)	~72 dB(A) — relatively quiet
Visibility	Excellent all-around visibility with large glass area
Work Lights	LED front work lights (standard)
Rearview Camera	Optional

📌 9. KEY FEATURES & ADVANTAGES

✅ Feature	Benefit
🔹 Zero Tail Swing (ZTS)	Works in the tightest spaces
🔹 Compact Radius Boom	Shorter boom for urban/residential work
🔹 Rubber Track Option	No damage to pavement; indoor use
🔹 Auxiliary Hydraulics	Runs 60+ Cat attachments
🔹 Low Ground Pressure	~32 kPa — works on soft ground
🔹 Easy Service Access	Ground-level daily checks; side-opening panels
🔹 Fuel Efficient	~3–4 L/hr (0.8–1.0 gal/hr) average
🔹 Emissions Compliant	No DPF — lower operating cost
🔹 Long Service Intervals	500-hour oil change; 1,000-hour filter
🔹 Blade & Dozer Option	Available for grading work

📌 10. COMMON ATTACHMENTS

Attachment	Use Case
🔨 Hydraulic Breaker	Demolition, concrete breaking
🔩 Auger (Drill)	Fence posts, sign posts, piling
🪣 Thumb / Grapple	Material handling, sorting
🪥 Rake	Landscaping, leveling
🔪 Trencher	Utility trenching
🪓 Rotating Grapple	Log handling, brush clearing
🧹 Sweeper	Street cleaning
🏗️ Dozer Blade	Grading, backfilling

📌 11. APPLICATIONS

Industry	Typical Use
🏗️ Construction	Trenching, foundation work, utility installation
🌳 Landscaping	Tree planting, grading, irrigation
🏠 Residential	Driveways, pools, backyard excavation
🔌 Utility	Cable/pipe laying, manhole work
🏢 Rental	Very popular in rental fleets worldwide
🏭 Demolition	Small-scale demolition with breaker

📌 12. PRICING (Approximate — 2024)

Configuration	Price Range (USD)
303.5E2 (Cab, Steel Tracks)	$45,000 – $55,000
303.5E2 (Canopy, Rubber Tracks)	$50,000 – $60,000
303.5E2 (Full Cab, A/C, Aux Hyd)	$55,000 – $65,000
With Attachment (e.g., Thumb + Aux Hyd)	$60,000 – $70,000+

💰 Prices vary by region, dealer, and configuration.

📌 13. COMPETITORS

Model	Weight	Power	Dig Depth
Cat 303.5E2	3,690 kg	24.3 HP	3,650 mm
Kubota KX040-4	4,080 kg	25.8 HP	3,400 mm
John Deere 35G	3,750 kg	24.8 HP	3,760 mm
Komatsu PC35MR-4	3,720 kg	24.7 HP	3,480 mm
Takeuchi TB250	2,630 kg	24.7 HP	2,750 mm
Yanmar SV08-1A	1,800 kg	15.4 HP	2,160 mm

📌 14. SUMMARY — WHY CHOOSE THE 303.5E2?

🏆 Strength	Details
✅ Best-in-class Zero Tail Swing	Unmatched maneuverability
✅ Compact & Lightweight	Fits through gates, doorways
✅ Versatile	60+ attachments via aux hydraulics
✅ Low Operating Cost	Fuel-efficient, no DPF, long service intervals
✅ Global Dealer Network	Easy parts & service worldwide
✅ Strong Resale Value	Cat mini excavators hold value well

🏗️ Bottom Line: The Caterpillar 303.5E2 is one of the best compact excavators in its class — perfect for contractors who need a versatile, fuel-efficient, tight-space machine with the reliability and support of the Cat brand. It's ideal for landscaping, utility, residential, and rental applications.

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