Used Komatsu 56-7Excavator

Reading: 14

📌 1. OVERVIEW

Item	Details
Manufacturer	Komatsu Ltd. (Japan)
Model	PC56-7 (also PC56LC-7)
Class	Mini / Compact Excavator
Series	7th Generation of the PC56 series
Production Period	~2012 – 2017
Successor	PC56-8 (8th series)
Predecessor	PC56-6

The Komatsu PC56-7 is a 5.5–5.7 ton class mini excavator designed for versatility in urban construction, landscaping, utility work, pipeline installation, and small-scale demolition. It strikes a balance between compact size and decent digging power.

📌 2. ENGINE SPECIFICATIONS

Parameter	Details
Engine Model	Komatsu SAA4D95LE-5
Type	4-cylinder, in-line, water-cooled, turbocharged diesel
Displacement	2,442 cc (2.44 L)
Rated Power	43.8 kW (58.7 HP) @ 2,200 rpm
Max Torque	~225 Nm @ 1,400 rpm
Emissions Standard	EPA Tier 4 Final / EU Stage IIIA (No DPF in most markets)
Fuel Tank Capacity	~80 L

✅ The engine is known for being fuel-efficient and meeting strict emission regulations without a DPF (Diesel Particulate Filter) in many regions, simplifying maintenance.

📌 3. HYDRAULIC SYSTEM

Parameter	Details
Pump Type	Variable displacement piston pump (2 pumps)
System Pressure	24.5 MPa (3,553 psi)
Total Flow Rate	~2 × 53 L/min (106 L/min total)
Hydraulic Tank	~52 L
Auxiliary Hydraulic Lines	1–2 circuits (for thumb, breaker, etc.)

📌 4. OPERATING WEIGHT & DIMENSIONS

Parameter	Details
Operating Weight	5,500 – 5,700 kg (12,125 – 12,566 lbs)
Overall Length (w/ blade)	~5,820 mm
Overall Width	~1,980 mm
Overall Height (to cab top)	~2,580 mm
Ground Clearance	~330 mm
Track Width (adjustable)	1,300 – 1,500 mm
Track Shoe Width	300 mm / 400 mm (options)

✅ The adjustable track width allows transport on public roads in some regions (within legal limits ~2.5m total width).

📌 5. DIGGING PERFORMANCE ⭐

Performance	Measurement
Max Digging Depth	~3,750 mm (12.3 ft)
Max Digging Reach	~5,600 mm (18.4 ft)
Max Digging Height	~5,500 mm (18.0 ft)
Max Dump Height	~3,950 mm (13.0 ft)
Max Vertical Wall Dig	~2,900 mm (9.5 ft)
Bucket Capacity (std)	0.15 – 0.20 m³ (varies by config)
Boom / Arm Options	Standard, Long Reach, Short Tail

📌 6. UNDERCARRIAGE

Feature	Details
Type	Steel tracks (rubber track option available)
Track Pitch	111 mm
Number of Rollers	3 per side (upper) + 5 (lower)
Rubber Track Option	~400 mm width (for paved/indoor use, reduces ground damage)

📌 7. CAB & OPERATOR COMFORT 🛋️

Feature	Details
ROPS/FOPS	✅ Certified (Roll-Over & Falling Object Protection)
Air Conditioning	✅ Standard
Heater	✅ Standard
Seat	Suspension seat with adjustable armrests
Controls	Joystick-type lever controls (easy operation)
Monitor	LCD display (engine info, fault codes, hours)
Sound Level	~72 dB(A) (relatively quiet for its class)
Visibility	Good all-around visibility with large glass area

📌 8. ATTACHMENTS & VERSATILITY 🔧

The PC56-7 is designed to accept a wide range of attachments:

Attachment	Application
🪣 Standard Bucket (150–200mm)	General digging
🫴 Hydraulic Thumb	Grappling, material handling
🔨 Hydraulic Breaker (Hammer)	Demolition, rock breaking
🔩 Auger / Drill	Post hole, pile driving
🧹 Tiltrotator	Multi-angle work
🪣 Grading/Til Bucket	Leveling, grading
🪣 4-in-1 Bucket	Versatile general use
🔧 Rippers	Hard ground breaking

📌 9. KEY ADVANTAGES ✅

Advantage	Explanation
🔹 Compact Size	Fits through narrow gates, works in tight urban spaces
🔹 Fuel Efficient	~5–7 L/hour under normal operation
🔹 Low Emissions	Tier 4 Final without DPF = less maintenance
🔹 Easy Transport	Can be loaded on a flatbed trailer
🔹 Komatsu Reliability	Proven durability, high resale value
🔹 Service Network	Global Komatsu dealer support
🔹 Operator Comfort	One of the best cabs in its class

📌 10. COMMON APPLICATIONS 🏗️

Industry	Use Cases
🏗️ Construction	Small foundations, trench digging
🌳 Landscaping	Tree planting, grading, pond digging
🔌 Utilities	Pipeline/cable trenching
🏚️ Demolition	Small building tear-down (with breaker)
🏡 Residential	Backyard excavation, septic work
🚜 Agriculture	Drainage, fence post holes
🏭 Industrial	Plant maintenance, confined space work

📌 11. COMPARISON WITH COMPETITORS

Spec	Komatsu PC56-7	Cat 305.5 E2	Kobelco SK55SR-5	John Deere 55G
Weight	~5,600 kg	~5,230 kg	~5,300 kg	~5,600 kg
Power	58.7 HP	54 HP	48 HP	51 HP
Dig Depth	3.75 m	3.63 m	3.44 m	3.62 m
Emissions	Tier 4 Final	Tier 4 Final	Stage V	Tier 4 Final
Cab Comfort	⭐⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐

🏆 The PC56-7 is generally considered one of the most comfortable and well-built mini excavators in its class.

📌 12. MAINTENANCE & SERVICE INTERVALS

Item	Interval
Engine Oil Change	Every 500 hours / 6 months
Hydraulic Oil Filter	Every 500 hours
Fuel Filter	Every 500 hours
Air Filter	Every 1,000 hours
Track Tension Check	Every 250 hours
Grease Points	Every 8 hours (daily)

📌 13. PRICE RANGE (Used Market, 2024–2025)

Condition	Approximate Price (USD)
🟢 Good (3,000–5,000 hrs)	$35,000 – $45,000
🟡 Fair (5,000–8,000 hrs)	$28,000 – $35,000
🔴 High Hours (8,000+ hrs)	$22,000 – $28,000

(Prices vary by region, condition, and attachments included)

🎯 SUMMARY

✅ The Komatsu PC56-7 is:
✔️ A reliable, fuel-efficient 5.5-ton mini excavator
✔️ Tier 4 Final compliant with low maintenance engine
✔️ Excellent operator comfort with modern cab
✔️ Highly versatile with many attachment options
✔️ Great resale value and global parts support
✔️ Ideal for urban, landscaping, utility, and light construction work

🏅 Bottom Line: The PC56-7 is one of the best-in-class compact excavators from Komatsu's 7th generation lineup — combining Japanese engineering quality, operator comfort, and real-world versatility. It remains a popular choice on the used market for good reason. 💪

Would you like more details on any specific aspect — such as parts, troubleshooting, or comparison with the PC56-8? 🚜