Used Komatsu 70-8Excavator

Reading: 14

📌 1. OVERVIEW

Item	Details
Manufacturer	Komatsu Ltd. (Japan)
Model	PC70-8 (8th Generation)
Class	7-Ton Mini / Compact Excavator
Predecessor	PC70-7
Launch Year	~2015–2016
Target Market	Construction, landscaping, utilities, residential, rental

The PC70-8 is Komatsu's latest-generation 7-ton class mini excavator, designed for high productivity, fuel efficiency, and operator comfort in tight workspaces. It replaced the well-known PC70-7 and features an upgraded engine meeting Tier 4 Final / Stage V emission standards.

📌 2. ENGINE SPECIFICATIONS

Parameter	Details
Engine Model	Komatsu SAA4D107E-5
Type	4-cylinder, turbocharged, intercooled diesel
Displacement	3.32 liters
Rated Power	48.7 kW (65.3 HP) @ 2,000 rpm
Max Torque	~245 N·m @ 1,400 rpm
Emission Standard	EPA Tier 4 Final / EU Stage V
Aftertreatment	DOC + DPF + SCR (DEF/AdBlue)
Fuel Tank Capacity	~120 liters

✅ The SCR (Selective Catalytic Reduction) system uses AdBlue/DEF to reduce NOx emissions — no DPF regeneration issues under normal operation.

📌 3. DIMENSIONS & WEIGHT

Parameter	Value
Operating Weight	6,800 – 7,250 kg (14,991 – 15,984 lbs) (varies by config)
Total Length (w/ bucket)	~6,080 mm (19 ft 11 in)
Total Width (tracks retracted)	~2,230 mm (7 ft 4 in)
Total Height (to cab top)	~2,620 mm (8 ft 7 in)
Ground Clearance	~370 mm
Ground Pressure	~34 kPa (4.9 psi)
Tail Swing Radius	~1,420 mm (Zero Tail Swing variant available)

✅ The compact width of ~2.23m makes it perfect for narrow passages, gates, and urban environments.

📌 4. DIGGING PERFORMANCE

Parameter	Value
Max Digging Depth	~4,130 mm (13 ft 7 in)
Max Digging Reach	~6,920 mm (22 ft 8 in)
Max Dumping Height	~4,700 mm (15 ft 5 in)
Max Digging Force (Boom)	~46 kN (10,340 lbf)
Max Digging Force (Arm)	~33 kN (7,420 lbf)
Bucket Capacity	0.19 – 0.32 m³ (0.25 – 0.42 yd³)
Blade Capacity (Dozer)	~2.1 m³ (w/ optional dozer blade)

| Boom Type | Digging Depth | Digging Reach ||-----------|--------------|| Standard Boom | 4,130 mm | 6,920 mm || Long Reach Boom (optional) | 5,130 mm | 8,250 mm |

📌 5. HYDRAULIC SYSTEM

Parameter	Details
Pump Type	Variable Displacement Piston Pump (2 pumps)
System Pressure	32 MPa (4,642 psi)
Total Flow	~2 × 125 L/min (250 L/min combined)
Auxiliary Flow	~45 L/min (for attachments)
Quick Coupler	Available (hydraulic or mechanical)

✅ The load-sensing hydraulic system automatically adjusts flow and pressure to match workload, saving fuel by up to 10–15% compared to the PC70-7.

📌 6. TRAVEL (UNDERCARRIAGE)

Parameter	Value
Track Width	400 mm / 450 mm / 500 mm (optional rubber pads)
Travel Speed (High)	~4.2 km/h (2.6 mph)
Travel Speed (Low)	~2.7 km/h (1.7 mph)
Gradeability	70% (35°)
Max Climb Angle	~35°

📌 7. CAB & OPERATOR COMFORT

Feature	Details
ROPS/FOPS	✅ Certified (Rollover & Falling Object Protection)
Air Conditioning	✅ Fully automatic climate control
Seat	Suspension seat with armrest, adjustable
Display	7-inch LCD monitor with multi-language support
Controls	Joystick-type lever controls (reduce operator fatigue)
Noise Level	~67 dB(A) (quieter than PC70-7 by ~2 dB)
Visibility	Wide-view windows, rear-view camera ready
Lighting	LED work lights (front + rear)
Bluetooth/USB	✅ Available
Komtrax	✅ Telematics-ready (remote machine monitoring)

📌 8. KEY FEATURES & TECHNOLOGY

Feature	Description
🔄 Zero Tail Swing (ZTS)	Available variant — zero overhang at rear, ideal for working near walls/buildings
🛠️ Dozer Blade	Optional — for grading, leveling, and backfilling
🔌 Auxiliary Hydraulic Lines	For hammers, augers, grapples, thumbs, etc.
📡 Komtrax Ready	GPS tracking, fuel monitoring, maintenance alerts
🔧 Easy Maintenance	Side-access panels, ground-level daily checks
🪣 Thumb Ready	Mechanical or hydraulic thumb attachment available
🧊 Heated Seat	Optional for cold climates
🛡️ Undercarriage Guard	Protects tracks and hydraulic lines

📌 9. FUEL EFFICIENCY

Comparison	PC70-7	PC70-8
Fuel Consumption	~11.5 L/hr	~9.5 – 10.5 L/hr
Improvement	—	~15% better fuel economy

✅ Achieved through: improved engine, load-sensing hydraulics, ECO mode, and auto-idle system.

📌 10. APPLICATIONS

Application	Suitability
🏗️ Residential construction	⭐⭐⭐⭐⭐
🌳 Landscaping & gardening	⭐⭐⭐⭐⭐
🔌 Utility trenching	⭐⭐⭐⭐⭐
🏢 Urban/indoor work	⭐⭐⭐⭐⭐ (ZTS variant)
🛣️ Road repair	⭐⭐⭐⭐
🏗️ Small demolition	⭐⭐⭐⭐ (w/ hammer)
🌾 Agriculture	⭐⭐⭐⭐
📦 Rental fleet	⭐⭐⭐⭐⭐

📌 11. PC70-8 vs PC70-7 — Quick Comparison

Feature	PC70-7	PC70-8
Engine	SAA4D95LE-5	SAA4D107E-5
Power	43.5 kW (58.3 HP)	48.7 kW (65.3 HP)
Emissions	Tier 3 / Stage IIIA	Tier 4 Final / Stage V
Fuel Efficiency	Baseline	~15% better
Cab Noise	~69 dB	~67 dB
Weight	~7,000 kg	~6,800–7,250 kg
Hydraulics	Fixed displacement	Load-sensing + ECO mode
Display	Basic	7" LCD multi-function

📌 12. PRICING (Approximate, 2024)

Market	Price Range (USD)
New Machine (US)	$75,000 – $95,000+ (depending on config)
Used (2016–2020)	$45,000 – $65,000
Rental (daily)	$300 – $500/day

💰 Prices vary significantly by region, configuration (ZTS vs conventional, long boom, dozer blade, etc.), and dealer.

✅ SUMMARY — WHY CHOOSE PC70-8?

Strength	Detail
✅ Powerful for its class	65 HP — punches above its weight
✅ Fuel efficient	~15% less fuel than PC70-7
✅ Compact & maneuverable	2.23m width, ZTS option
✅ Operator comfort	Quiet cab, AC, joystick controls
✅ Eco-friendly	Tier 4 Final / Stage V compliant
✅ Low maintenance cost	Easy access, Komatsu reliability
✅ Versatile	100+ attachments available
✅ Strong resale value	Komatsu brand reputation

The Komatsu PC70-8 is widely regarded as one of the best 7-ton mini excavators on the market, balancing power, efficiency, comfort, and versatility — making it a top choice for contractors, rental companies, and landscapers worldwide. 🚜💪