Used Sany 155Excavator

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📌 1. Overview

The SANY SY155 is a 15-ton class (medium-sized) crawler hydraulic excavator manufactured by SANY Heavy Industry, one of the world's top construction machinery manufacturers. It is designed for versatile earthmoving, construction, and infrastructure work and is widely sold in global markets including Asia, Europe, Africa, South America, and the Middle East.

🏭 Manufacturer: SANY Group (Changsha, China)🔧 Model: SY155 / SY155C (C = Comfort cab version)📊 Class: 15-ton / 15,000 kg operating weight

🔧 2. Engine Specifications

Parameter	Detail
Engine Model	Isuzu AJ-4HK1X (most common) / Yanmar 4TNV98 (some markets)
Type	4-cylinder, water-cooled, turbocharged diesel
Rated Power	86 kW (115 HP) @ 2,000 rpm
Emission Standard	Tier 4 Final / Stage V (EU) / China IV
Fuel Tank Capacity	~300 L
Engine Speed	Auto-idle & boost function

✅ The engine features turbo speed boost for extra power when needed and auto-idle speed reduction to save fuel.

⚙️ 3. Hydraulic System

Parameter	Detail
Pump Type	Dual variable-displacement axial piston pumps
Total Flow	2 × 160 L/min (approx. 320 L/min)
System Pressure	34.3 MPa (350 bar)
Control System	Negative Flow Control (NFC) — matches pump output to demand = less heat, more efficiency
Swing System	2-speed swing (fast/slow) with auto-deceleration

📐 4. Dimensions & Weight

Parameter	Value
Operating Weight	~15,200 kg
Track Shoe Width	600 mm
Ground Clearance	~430 mm
Transport Length	~7,720 mm
Transport Width	~2,550 mm
Transport Height	~2,980 mm
Tail Swing Radius	~2,370 mm
Track Gauge	~1,980 mm

🪣 5. Working Performance

Parameter	Value
Bucket Capacity (Standard)	0.5 – 0.65 m³ (adjustable)
Max Digging Depth	~7,100 mm
Max Digging Reach	~9,400 mm
Max Dumping Height	~7,300 mm
Max Digging Radius (Ground Level)	~8,700 mm
Max Vertical Wall Digging Depth	~5,500 mm
Max Pull Force	~105 kN
Swing Speed	8.5 rpm (standard) / 11 rpm (optional)
Travel Speed (High/Low)	5.5 / 3.6 km/h
Gradeability	70% (35°)
Climbing Ability	~600 mm
Max Trenching Depth	~5,800 mm

🪑 6. Cab & Operator Comfort (SY155C)

Feature	Detail
Cab Type	Full-enclosed ROPS/FOPS certified
Seat	Air-suspension seat with armrest
Air Conditioning	✅ Standard
Display	7-inch color LCD monitor with real-time monitoring
Controls	Multi-function joystick with thumb dial
Noise Level	≤ 70 dB(A) (relatively quiet for its class)
Vibration	Low-vibration mounting system
Visibility	Large glass area, excellent all-around visibility
Storage	Cup holders, phone holder, USB charging port

🧠 7. Intelligent & Smart Features

Feature	Description
🟢 ECO Mode	Reduces engine RPM & pump flow during light work → saves 10-15% fuel
🟢 Auto-Idle	Engine auto-reduces to idle when no operation for ~4 sec
🟢 Turbo Boost	One-touch power boost for heavy digging
🟢 Intelligent Power Management (IPM)	Optimizes engine-hydraulic matching
🟢 Fault Diagnosis	Real-time self-diagnosis displayed on LCD
🟢 Weight Management	Helps operators avoid overload
🟢 Anti-Theft System	Engine immobilizer (optional)
🟢 Remote Monitoring	SANY i-Sany / SCC telematics system compatible (GPS tracking, hour meter, maintenance alerts)

🔩 8. Maintenance-Friendly Design

Feature	Benefit
✅ Ground-level grease points	Easy daily lubrication
✅ Side-opening engine hood	Quick engine access
✅ Large-capacity fuel filter & oil filter	Longer service intervals
✅ Convenient radiator cleaning access	Easy maintenance in dusty conditions
✅ Service interval: 500 hours (engine oil) / 1,000 hours (hydraulic oil)
✅ Track adjustment from ground level	No need to jack up

🌍 9. Typical Applications

Application	Details
🏗️ Urban Construction	Tight-space work, building foundations
🛣️ Road & Highway	Trenching, pipe laying, grading
🏗️ Infrastructure	Water/sewage pipeline, cable trenching
🏔️ Mining & Quarrying	Rock breaking, loading trucks
🌳 Landscaping & Agriculture	Digging, leveling, drainage
🗑️ Demolition	With hydraulic breaker or grapple
🌊 Water Conservancy	Riverbank reinforcement, ditch cleaning

🆚 10. Competitive Comparison

Feature	SANY SY155	CAT 315	Komatsu PC150	Doosan DX150LC
Power	115 HP	118 HP	120 HP	125 HP
Weight	15,200 kg	15,700 kg	15,400 kg	15,500 kg
Bucket	0.5–0.65 m³	0.5–0.7 m³	0.5–0.6 m³	0.5–0.65 m³
Price	⭐ Most Competitive	High	High	Medium-High
After-sales	⭐ Growing global network	Excellent	Excellent	Good
Warranty	2 years / 2,000 hrs	2 years / 2,000 hrs	2 years / 2,000 hrs	2 years / 2,000 hrs

💰 Price Range (approx.): US$55,000 – $75,000 depending on configuration & region (significantly cheaper than CAT/Komatsu)

✅ 11. Key Advantages Summary

✅ Advantage	Explanation
💰 Cost-Effective	20-30% cheaper than CAT/Komatsu with similar performance
🛢️ Fuel Efficient	ECO mode + IPM saves 10-15% fuel
🧠 Smart Technology	i-Sany telematics, LCD monitoring, auto-diagnosis
🪑 Comfortable Cab	Air-suspension seat, AC, low noise
🔧 Easy Maintenance	Ground-level service points, long intervals
🌐 Global Support	SANY has 400+ service centers in 150+ countries
💪 Reliable	SANY engines + pumps = proven durability
📈 Resale Value	Rapidly improving in global markets

🏁 12. Conclusion

The SANY SY155 is one of the best value-for-money 15-ton excavators on the global market today. It combines:

✅ Strong Isuzu engine
✅ Advanced hydraulic system (NFC)
✅ Smart/intelligent features
✅ Excellent operator comfort
✅ Competitive pricing

It is an ideal choice for contractors who want CAT/Komatsu-level performance at a much lower price, especially in emerging markets and cost-sensitive projects.