Used Komatsu 55Excavator

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📌 1. OVERVIEW

The Komatsu PC55MR-5 is a 5-ton class mini excavator and one of the most popular models in Komatsu's compact equipment lineup. It is designed for versatile performance in tight spaces, making it ideal for:

Application	Details
🏚️ Urban Construction	Buildings, renovations
🌿 Landscaping	Digging trenches, planting
🚰 Utility Work	Pipe laying, cable installation
🏭 Demolition	Small-scale demolition
🌾 Agriculture	Drainage, ditching

The "MR" stands for Mini excavator with Rubber tracks (optional), and "-5" indicates the 5th generation (2019–present).

🔧 2. ENGINE SPECIFICATIONS

Parameter	Details
Engine Model	Komatsu SAA4D107E-5
Type	4-cylinder, turbocharged, intercooled diesel
Displacement	3.32 L (202.6 cu in)
Rated Power	40.4 kW (54.2 HP) @ 2,000 rpm
Max Torque	206 N·m (152 lb-ft) @ 1,400 rpm
Emission Standard	🇪🇺 Stage V / EPA Tier 4 Final
Fuel Tank Capacity	80 L (21.1 US gal)
Cooling System	Water-cooled with fan

✅ The engine is fuel-efficient and meets the strictest emission regulations worldwide.

📐 3. DIMENSIONS & WEIGHT

Specification	Metric	Imperial
Operating Weight	5,630 kg	12,412 lbs
Transport Length	5,440 mm	17 ft 10 in
Transport Width	1,980 mm	6 ft 6 in
Transport Height	2,590 mm	8 ft 6 in
Ground Clearance	350 mm	13.8 in
Track Width	1,480–1,980 mm (adjustable)	4 ft 10 in – 6 ft 6 in
Track Length (Ground Contact)	1,860 mm	6 ft 1 in

💪 4. PERFORMANCE (WORKING RANGE)

Parameter	Value
Max Digging Depth	3,690 mm (12 ft 1 in)
Max Digging Reach	5,800 mm (19 ft 0 in)
Max Digging Height	5,690 mm (18 ft 8 in)
Max Dumping Height	4,030 mm (13 ft 3 in)
Max Vertical Wall Digging Depth	3,040 mm (9 ft 11 in)
Tail Swing Radius	1,430 mm (4 ft 8 in) ✅ Zero Tail Swing
Bucket Capacity	0.14 – 0.23 m³ (0.18 – 0.30 cu yd)

⭐ Zero Tail Swing = The upper structure does NOT swing beyond the track width — perfect for working near walls & fences!

🛞 5. UNDERCARRIAGE OPTIONS

Type	Width	Best For
🔗 Steel Tracks (Standard)	400 mm / 450 mm	Heavy-duty, rocky terrain
🛞 Rubber Tracks (Optional)	1980 mm / 250 mm	Road travel, paved surfaces, sensitive ground
🦶 3-Shoe (Optional)	—	Extremely narrow spaces

🎛️ 6. HYDRAULIC SYSTEM

Specification	Details
Pump Type	Variable displacement piston pump (2 pumps)
System Pressure	34.3 MPa (4,975 psi)
Flow Rate	2 × 58.4 L/min (15.4 gal/min)
Auxiliary Hydraulic Flow	37.4 L/min (9.9 gal/min)
Auxiliary Pressure	21.6 MPa (3,130 psi)

✅ Supports hydraulic attachments: breaker, auger, grapple, thumb, quick coupler, etc.

🖥️ 7. OPERATOR CABIN & COMFORT

Feature	Details
💺 Seat	Suspension seat with armrest
❄️ A/C	Standard air conditioning
🔊 Noise Level	~72 dB(A) — one of the quietest in class
🖥️ Display	7-inch color LCD monitor
🎮 Controls	Joystick with finger-tip control + foot pedal
🔑 Dozer Blade	Standard (adjustable angle)
🧹 ROPS/FOPS	Fully enclosed cab with protective structure

🔄 8. ATTACHMENTS (QUICK COUPLER — OPTIONAL)

Attachment	Use
🪣 Bucket (200–600 mm)	General digging
🔨 Hydraulic Breaker	Concrete/rock breaking
🔩 Auger	Post hole drilling
🫳 Grapple	Material handling
👍 Thumb	Pipe/log gripping
🪚 Tiltrotator	Versatile 360° rotation

📊 9. PC55MR-3 vs PC55MR-5 COMPARISON

Feature	PC55MR-3 (Old)	PC55MR-5 (Current)
Engine	SAA4D107E-3	SAA4D107E-5 ✅
Power	37.3 kW (50 HP)	40.4 kW (54.2 HP) ⬆️
Emission	Stage IIIA / Tier 3	Stage V / Tier 4 Final ✅
Weight	5,350 kg	5,630 kg
Production	2012–2019	2019–Present

💰 10. APPROXIMATE PRICING (2024)

Region	Price Range (USD)
🇺🇸 USA	$65,000 – $85,000
🇪🇺 Europe	€60,000 – €80,000
🌏 Asia	$55,000 – $75,000
🇦🇺 Australia	AUD $100,000 – $130,000

Prices vary by configuration, attachments, and dealer.

✅ 11. KEY ADVANTAGES

✅ Advantage	Explanation
🏆 Reliability	Komatsu's legendary build quality & durability
📉 Low Fuel Consumption	~6–8 L/hr (1.6–2.1 gal/hr)
🤏 Compact Size	Fits through standard gates (1,980 mm)
🔇 Low Noise	Best-in-class at ~72 dB
🌍 Global Support	Komatsu has dealers in 140+ countries
♻️ Resale Value	Excellent — Komatsu holds value very well

🏁 12. SUMMARY

Category	Rating
⭐ Overall Rating	⭐⭐⭐⭐⭐ (4.8/5)
💪 Power	⭐⭐⭐⭐
📏 Compactness	⭐⭐⭐⭐⭐
🔧 Serviceability	⭐⭐⭐⭐⭐
💰 Value for Money	⭐⭐⭐⭐

🏆 Bottom Line: The Komatsu PC55MR-5 is one of the best 5-ton mini excavators on the market — combining power, compactness, fuel efficiency, and Komatsu's unmatched reliability. It's the go-to choice for contractors who need a workhorse in tight spaces.

Would you like me to compare it with CAT 305.5, Kubota KX057, or Yanmar SV08? 🚜