used excavator

The SANY SY155C is a 15-ton class medium hydraulic excavator primarily used in urban road construction, municipal engineering, and agricultural water conservancy projects. Its key specifications include: operating weight of approximately 14,100 kg (up to 16,500 kg in some configurations), standard bucket capacity of 0.55 m³ (expandable to 0.6–0.7 m³). The engine is an Isuzu 4JJ1-XDJAG-01-C3 four-cylinder turbocharged diesel engine with 2.999L displacement, delivering 73 kW at 2,000 rpm and maximum torque of 365 Nm at 1,600 rpm. Performance figures include maximum digging depth of 5,500 mm, maximum digging height of 8,610 mm, maximum unloading height of 6,115 mm, and maximum digging radius of 8,330 mm. Bucket digging force reaches 92.7 kN, and stick digging force reaches 66.13 kN. The machine features two travel speeds (5.5 km/h high, 3.5 km/h low), a swing speed of 12 rpm, and a gradeability of 70% (35°). Its fuel tank capacity is 240 L, hydraulic oil tank holds 150 L, and engine oil capacity is 15 L.

The price of a used SANY SY155C excavator varies significantly based on age, operating hours, condition, and configuration. Market data from 2025–2026 shows a 2021 model with 5,000 hours priced at approximately $29,549 USD (≈ ¥210,000). A 2023 model with only 369 operating hours was listed at $22,600 per unit, dropping to $21,600 per unit for bulk purchases of 5 units. Another 2021 model from Shanghai was offered at €19,500 (≈ $22,550). According to industry analysis, used medium-sized Sany excavators typically range from approximately $30,000 for well-maintained units, while compact models with higher hours can start around $10,000. Key pricing factors include age (newer machines command premiums), operating hours (units under 2,000 hours retain higher value), condition (well-maintained machines with complete service records are more valuable), and regional market demand. Buyers should also consider that certified used units with verified maintenance histories typically cost 15–20% more than as-is machines but offer lower long-term risk.

The SANY SY155C is generally recognized for its reliability, particularly due to its Isuzu engine and Kawasaki hydraulic components. The Isuzu 4JJ1X engine is designed to ensure reliable operation even in harsh working conditions, and the Kawasaki main pump and distribution valve ensure high reliability of the hydraulic system. However, the most frequently reported issue is hydraulic system oil leakage. Potential leak points include hydraulic pipes, pipe joints, filters, segmenters, pressure regulators, as well as O-rings and sealing gaskets. Common causes of leakage include improper seal selection, manufacturing precision issues, contamination from poor-quality hydraulic oil, system overheating accelerating seal aging, or piston rod impact damage. Proper preventive maintenance—regular hydraulic system inspections, timely hydraulic oil changes, keeping the system clean, and promptly replacing damaged seals—effectively mitigates these issues. Notably, units with 4,000–5,500 operating hours are typically considered to have approximately 55–65% of remaining lifespan when properly maintained, validated for construction, landscaping, and light industrial tasks. Buyers should always inspect hydraulic systems, undercarriage, and attachments for wear and damage before purchase.

The SANY SY155C is recognized for its excellent fuel economy and efficient operation, which directly impacts users’ operating costs. The Isuzu 4JJ1-XDJAG-01-C3 engine is designed to reduce fuel consumption while maintaining high performance, and innovative engine technology lowers operational costs through reduced fuel usage. The machine features an electro-hydraulic positive flow control system with Kawasaki main pump and distribution valve, integrating three core technologies: precision flow distribution, reduced pressure loss, and hydraulic system cushioning. This design improves overall operational efficiency, enhances control performance, and provides superior grading capabilities. The main hydraulic pump is rated with system pressure reaching approximately 300 bar, supporting high breakout forces. The hydraulic system is designed for maximum fuel efficiency and smooth operation, delivering fast cycle times and precise control over the boom, arm, and bucket. Many models feature multiple operating modes (heavy-duty, standard, light-duty, and economy modes), allowing operators to select the optimal balance between efficiency and fuel consumption based on actual working conditions. Economy mode significantly reduces fuel consumption, resulting in lower daily operating costs.

A well-maintained SANY SY155C with 4,000–5,500 certified operational hours typically retains approximately 55–65% of its remaining lifespan, validated for construction, landscaping, and light industrial tasks. Machines with hours in the 1,500–3,000 range are considered prime units offering excellent value-to-remaining-life ratio. The recommended 1,000-hour service kit includes all necessary components to maintain peak efficiency, and regular service and preventive maintenance are important practices to keep the machine at peak efficiency. Key maintenance intervals include: engine oil and filter replacement every 250–500 hours depending on operating conditions, hydraulic oil and filter replacement every 1,000–2,000 hours, fuel filter replacement every 500 hours, and air filter cleaning/replacement as needed based on dust exposure. The undercarriage requires frequent inspection for track tension, roller wear, sprocket condition, and track shoe integrity. For used units, buyers should verify that the boom, bucket linkage, and undercarriage have no prior structural repairs or cracks. Major components like the engine, hydraulic pump, distribution valve, and swing motor should be inspected for any prior damage or repair records. When properly maintained, the SANY SY155C can achieve 10,000–12,000 total operating hours before major overhaul is required.