Used Yanmar 55 Excavator

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Detailed Introduction to YANMAR 55 Domestic Excavator (Yanmar Vio55-6B China Localized Assembled Version)

The Yanmar 55 domestic excavator is a 5.5-ton compact crawler excavator manufactured at Yanmar’s Jiangsu production base in China, following Yanmar’s global quality management system while carrying out targeted optimizations for domestic working conditions. It is positioned as a cost-effective small excavation equipment for China’s municipal, rural construction and landscaping markets, balancing high performance, durability and low operating cost.

1. Core Technical Specifications

Parameter	Specific Value
Operating Weight	5300–5500 kg
Rated Power	39 kW / 2200 rpm (Yanmar original 3TNV88 diesel engine)
Standard Bucket Capacity	0.18–0.22 m³
Maximum Digging Depth	3820 mm
Maximum Digging Radius	6100 mm
Maximum Digging Height	5750 mm
Travel Speed	2.2 km/h (low speed) / 4.2 km/h (high speed)
Swing Speed	11 rpm
Ground Pressure	33 kPa
Emission Standard	China National Stage IV (latest version)
Tail Swing Radius	1180 mm (zero rear overhang design)

2. Core Features & Technical Highlights

2.1 High-efficiency powertrain and hydraulic system

Equipped with Yanmar’s original water-cooled 4-stroke diesel engine, with built-in intelligent idle speed control and overload protection system, the fuel consumption is only 3–4 L per hour under conventional working conditions, 15% more fuel-efficient than similar products of the same tonnage.
Adopts imported negative flow hydraulic system, with fast response and high coordination of composite actions (digging, swinging and walking can be operated at the same time without jamming). The pilot control handle has short stroke and light operating force, which reduces the long-term operation fatigue of drivers.
Standard with boom offset function, the boom can shift 380 mm left and right, supporting excavation close to walls, ditches and other narrow spaces.

2.2 Localized adaptation for domestic working conditions

The chassis is reinforced with thickened wear-resistant crawler plates and heavy-duty crawler frames, which is 20% more impact-resistant than imported versions, adapting to harsh working conditions such as domestic gravel sites and muddy farmland.
The bucket is made of high-strength wear-resistant steel, and the bucket teeth are made of alloy steel with quenching treatment, which has a service life of more than 800 hours under hard soil excavation conditions.
The cooling system is optimized for China’s climate, supporting continuous operation without overheating at 45℃ high temperature, and one-click start at -20℃ low temperature. The electrical system has reached IP67 dustproof and waterproof grade, adapting to rainy and dusty construction sites.

2.3 Operator-centric cab design

The cab is ROPS (Roll-over Protective Structure) and FOPS (Falling Object Protective Structure) certified, with fully sealed sound insulation design, and the internal noise is controlled below 75 dB during operation.
Equipped with fully adjustable suspension seat, high-power heating and cooling air conditioner, USB charging port and large storage space, the front windshield can be fully opened for easy ventilation and communication with outside personnel.

2.4 Low maintenance cost

All maintenance points (oil filter, fuel filter, air filter, hydraulic oil filter) are designed at ground-accessible positions, and daily inspection and parts replacement do not require climbing the vehicle.
Equipped with intelligent fault diagnosis system, the instrument panel can display real-time fault codes, which shortens the troubleshooting time by 60%. The price of domestic localized spare parts is 30% lower than that of imported versions, and the supply is sufficient.

3. Typical Application Scenarios

Municipal engineering: road maintenance, pipeline excavation, community renovation
Gardening and greening: tree planting digging, lawn sorting, landscape construction
Rural infrastructure: house foundation excavation, septic tank renovation, village road construction
Water conservancy projects: trench excavation, river dredging, farmland water conservancy renovation
Narrow space operation: indoor demolition, basement construction, garbage clearing in narrow alleys

4. Advantages of Domestic Version Compared to Imported Version

The price is about 20% lower, with higher cost performance, and the delivery cycle is shortened by more than 80% without waiting for overseas transportation.
The after-sales network covers more than 300 cities across the country, supporting on-site maintenance services, and the after-sales response time is no more than 24 hours in most areas.
Targeted optimization for domestic working conditions reduces the failure rate by 18% compared with imported versions under the same use intensity.
Provides flexible extended warranty policies for domestic users, which further reduces the use cost for small and medium-sized individual operators.

Non flooded

No accident

Original product

Used Yanmar 55 Excavator

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