Zero Tail Swing
Superior Operator Comfort and Safety
Powerful Hydraulics
Legendary Hitachi Reliability
Hitachi's Zero Tail Swing mini excavator range keeps your tail completely tucked in, with no overhang. So you can focus on the job in front of you instead of what's behind you.
Specifications
| Model Code | ZX55U-5A |
| Engine Rated Power | 28.2 kW (37.8 HP) |
| Operating Weight | Canopy 4 850 - 5 250 kg Cab 4 980 - 5 380 kg |
| Backhoe Bucket | ISO Heaped : 0.14 m3 |
ENGINE
| Model | Yanmar EDM-4TNV88 |
| Type | 4-cycle water-cooled, direct injection |
| No. of cylinders | 4 |
| Rated power ISO 9249, net | 28.2 kW (37.8 HP) at 2 400 min-1 (rpm) |
| Rated power EEC 80/1269, net | 28.2 kW (37.8 HP) at 2 400 min-1 (rpm) |
| Rated power SAE J1349, net | 28.2 kW (37.8 HP) at 2 400 min-1 (rpm) |
| Maximum torque | 139.6 Nm (14.2 kgfm) at 1 100 min-1 (rpm) |
| Piston displacement | 2.189 L |
| Bore and stroke | 88 mm x 90 mm |
| Batteries | 1 x 12 V / 72 Ah |
HYDRAULIC SYSTEM
Hydraulic Pumps
| Main pumps | 1 variable displacement axial piston pumps |
| Main pumps Maximum oil flow | 1 x 120 L/min |
| Pilot pump | 1 gear pump |
| Pilot pump Maximum oil flow | 12.0 L/min |
Hydraulic Motors
| Travel | 2 variable displacement axial piston motors |
| Swing | 1 axial piston motor |
Relief Valve Settings
| Implement circuit | 24.5 MPa (250 kgf/cm2) |
| Swing circuit | 18.3 MPa (187 kgf/cm2) |
| Travel circuit | 24.5 MPa (250 kgf/cm2) |
| Pilot circuit | 5.9 MPa (60.2 kgf/cm2) |
Hydraulic Cylinders
UPPERSTRUCTURE
Revolving Frame
D-section frame for resistance to deformation.
Swing Device
Axial piston motor with planetary reduction gear is bathed in oil. Swing circle is single-row. Swing parking brake is spring-set/hydraulic-released disc type.
| Swing speed | 9.0 min-1 (rpm) |
| Swing torque | 8.6 kNm (877 kgfm) |
Operator's Cab
Independent spacious cab, 1 049 mm wide by 1 611 mm high,
conforming to ISO* Standards. Reinforced glass windows on 4 sides for visibility. Front windows (upper and lower) can be opened. Reclining seat.
* International Organization for Standarization
conforming to ISO* Standards. Reinforced glass windows on 4 sides for visibility. Front windows (upper and lower) can be opened. Reclining seat.
* International Organization for Standarization
UNDERCARRIAGE
Tracks
Tractor-type undercarriage. Welded track frame using selected materials. Side frame welded to track frame.
Numbers of Rollers on Each Side
| Upper roller | 1 |
| Lower rollers | 4 |
Travel Device
Each track driven by 2-speed axial piston motor.
Parking brake is spring-set/hydraulic-released disc type.
Automatic transmission system: High-Low.
Parking brake is spring-set/hydraulic-released disc type.
Automatic transmission system: High-Low.
| Travel speeds | High : 0 to 4.2 km/h Low : 0 to 2.5 km/h |
| Maximum traction force | 38.3 kN (3 905 kgf) |
| Gradeability | 58% (30 degree) continuous |
SERVICE REFILL CAPACITIES
| Fuel tank | 70.0 L |
| Engine coolant | 4.7 L |
| Engine oil | 8.6 L |
| Travel device (each side) | 0.9 L |
| Hydraulic system | 66.0 L |
| Hydraulic oil tank | 42.0 L |
WEIGHTS AND GROUND PRESSURE
Operating Weight and Ground Pressure
| 4-PILLAR CANOPY | |
Including 0.14 m3 (ISO heaped), bucket weight (109 kg).
* Including 0.14 m3 (ISO heaped), bucket weight (109 kg), additional counterweight (200 kg). | |
| CAB | |
Including 0.14 m3 (ISO heaped), bucket weight (109 kg).
* Including 0.14 m3 (ISO heaped), bucket weight (109 kg), additional counterweight (200 kg). | |
BUCKET AND ARM DIGGING FORCE
Unit: mm
* Excluding track shoe lug Data in ( ) are dimensions of grouser shoe.
Notes: 1. Ratings are based on ISO 10567.
2. Lifting capacity does not exceed 75% of tipping load with the machine on firm, level ground or 87% full hydraulic capacity.
3. The load point is the center-line of the bucket pivot mounting pin on the arm.
4. *Indicates load limited by hydraulic capacity.
5. 0 m = Ground.
For lifting capacities, subtract bucket and quick hitch weight from lifting capacities without bucket.
2. Lifting capacity does not exceed 75% of tipping load with the machine on firm, level ground or 87% full hydraulic capacity.
3. The load point is the center-line of the bucket pivot mounting pin on the arm.
4. *Indicates load limited by hydraulic capacity.
5. 0 m = Ground.
For lifting capacities, subtract bucket and quick hitch weight from lifting capacities without bucket.
ZX55U-5A 4-Pillar Canopy Version, Blade above Ground
ZX55U-5A 4-Pillar Canopy Version, Blade on Ground
ZX55U-5A 4-Pillar Canopy Version, Blade above Ground
ZX55U-5A 4-Pillar Canopy Version, Blade on Ground
ZX55U-5A Cab Version, Blade above Ground
ZX55U-5A Cab Version, Blade on Ground
ZX55U-5A Cab Version, Blade above Ground
ZX55U-5A Cab Version, Blade on Ground
HIGH PERFORMANCE
Agility Stands for Efficiency
Swift Actions in Narrow Work Place
Short rear-end swing design allows for safe, confident operation in tight work areas.
Shown equipped with 1.69 m arm, extra piping and additional counterweight.
Excellent Controllability
The Hitachi pilot control system is impressive. The control lever provides excellent fine control and low-effort handling to reduce operator fatigue. It is ergonomically positioned for easy operation. The HHH (Hitachi High-performance Hydraulic) system allows for smooth operation by lever control regardless of the load. The multi-monitor allows selection of ECO and PWR modes to control the motion speed. With the engine control dial, you can also adjust engine speed with ease. The auto speed change system shifts down travel speed when the load exceeds a certain limit (for instance, when going downhill), and shifts up when the load is less.
Control lever
Reduced Fuel Consumption
A new engine has an electronic governor that is a clue to low fuel consumption. With an electronic accelerator, you can achieve precision engine control for fuel economy. To conserve fuel, select ECO mode, and to get more power, select PWR mode. In short, you can choose an optimum mode according to job needs.
The Auto Idle helps save fuel consumption, too. When moving the control lever to neutral, the Auto Idle automatically reduces engine speed to idling level four seconds later, reducing fuel consumption.
The Auto Idle helps save fuel consumption, too. When moving the control lever to neutral, the Auto Idle automatically reduces engine speed to idling level four seconds later, reducing fuel consumption.
Standard and optional equipment may vary by country, so please consult your Hitachi dealer for details.
* Hitachi Construction Machinery cannot be held liable for theft, any system will just minimize the risk of theft.
Reducing Environmental Impact by New ZAXIS
Hitachi makes a green way to cut carbon emissions for global warming prevention according to LCA*. New ZAXIS utilizes lots of technological advances, including the new ECO mode, and Isochronous Control. Hitachi has long been committed to recycling of components, such as aluminum parts in radiators and oil cooler. Resin parts are marked for recycling.
*Life Cycle Assessment - ISO 14040
Hitachi makes a green way to cut carbon emissions for global warming prevention according to LCA*. New ZAXIS utilizes lots of technological advances, including the new ECO mode, and Isochronous Control. Hitachi has long been committed to recycling of components, such as aluminum parts in radiators and oil cooler. Resin parts are marked for recycling.
*Life Cycle Assessment - ISO 14040
Unit: mm
Excluding track shoe lug.
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