08-20-2025, 04:56 PM
The Doosan DX55-9C is a compact hydraulic mini excavator designed for diverse construction, landscaping, and utility tasks, combining robust power, efficient hydraulics, and operator-focused ergonomics.
Engine and Power
The Doosan DX55 mini excavator combines advanced hydraulic technology, reliable Yanmar engine power, and operator-centered design to deliver efficient performance on urban and confined job sites. Its balanced power and intuitive controls make it an ideal choice for operators requiring agility and strength in a compact footprint.
Engine and Power
- Powered by a Yanmar 4TNV94L-BVDBC 4-cylinder diesel engine producing 36.2 kW (approximately 48.6 horsepower) at 2,100 RPM, known for fuel efficiency and reliability.
- The fuel tank capacity is 100 liters, supporting extended operation durations.
- The hydraulic oil tank capacity is 62 liters, ensuring sufficient oil for smooth hydraulic function.
- Operating weight is about 5,400 kg (approximately 11,905 lbs), balancing strength and transportability.
- Overall length is around 5,870 mm (19.3 ft), width is approximately 1,870 mm (6.1 ft), and height to top of cab is about 2,590 mm (8.5 ft).
- Walking speeds range from 2.7 km/h (low) to 4.0 km/h (high), enabling efficient site maneuvering.
- Equipped with twin variable displacement axial piston pumps producing a maximum flow of 2 x 55 liters per minute for boom, arm, and bucket operations.
- The hydraulic system pressure reaches up to 240 bar (approximately 3,480 psi), ensuring strong digging and lifting capabilities.
- Auxiliary systems include gear pumps and pilot pumps allowing smooth combined function and joystick control.
- Maximum digging reach is roughly 6,025 mm (19.8 ft), with a maximum digging depth of about 3,775 mm (12.4 ft).
- Bucket digging force is rated at 3.9 tons, and arm digging force at 2.8 tons, suitable for medium-duty excavation tasks.
- Swing speed is approximately 9.3 RPM, enabling quick worksite repositioning.
- The cabin offers a spacious layout with excellent visibility and ergonomically designed controls, reducing operator fatigue.
- Features include air conditioning, adjustable suspension seats, sound insulation, and safety glass windows.
- Controls incorporate electro-hydraulic systems with multi-function joysticks and adjustable instrument panels for intuitive operation.
- Includes hydraulic safety lock levers, emergency engine stop switches, and reinforced handrails for operator protection.
- Maintenance is simplified with accessible service points for filters, belts, and electrical components.
- The machine employs self-diagnostic systems and PC interface ports to facilitate troubleshooting and maintenance management.
- Variable Displacement Pump: Hydraulic pump that adjusts output flow based on demand for efficiency and control.
- Axial Piston Pump: A type of pump using pistons arranged in a circular pattern to generate hydraulic pressure.
- Electro-Hydraulic Controls: Joystick and lever systems that use electronic signals to modulate hydraulic flow precisely.
- Self-Diagnostic System: Onboard software that monitors system health and alerts operators to potential issues.
- Digging Force: The maximum force the bucket or arm can exert during excavation.
The Doosan DX55 mini excavator combines advanced hydraulic technology, reliable Yanmar engine power, and operator-centered design to deliver efficient performance on urban and confined job sites. Its balanced power and intuitive controls make it an ideal choice for operators requiring agility and strength in a compact footprint.
