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29.1 kW
Net Power
4,790 - 5,310 kg
Operating Weight
0.10 - 0.17 m3
Bucket ISO Heaped
3,530 - 3,830 mm
Max Dig Depth

Hitachi ZX55U-6

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  • Specifications
  • Net Power: 29.1 kW
  • Operating Weight: 4,790 - 5,310 kg
  • Bucket ISO Heaped: 0.10 - 0.17 m3
  • Max Dig Depth: 3,530 - 3,830 mm
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  • Specifications
  • Net Power: 29.1 kW
  • Operating Weight: 4,790 - 5,310 kg
  • Bucket ISO Heaped: 0.10 - 0.17 m3
  • Max Dig Depth: 3,530 - 3,830 mm

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The ZX55U-6 offers high levels of productivity with reduced fuel consumption and emissions, thanks to a powerful Stage V-compliant engine and muffler filter after-treatment device. Comfort and easy maintenance are also important factors in its design. Highly versatile, it is ideal for a wide range of projects, including rental, utilities, foundation work, landscaping, and indoor demolition and construction.


4-cycle water-cooled, common rail direct injection
Cooled EGR
After treatment
Muffler filter
Rated power
ISO 14396
29.1 kW at 2,400 min-1
Maximum torque
135.8 Nm at 1,560 min-1
Piston displacement
2.189 L
Bore and stroke
88 mm x 90 mm
1 x 12 V / 72 Ah
Hydraulic System
Main System:
Maximum Oil Flow
1 x 120 L/min
Pilot Pump:
Maximum Oil Flow
12.0 L/min
Relief Valve Settings:
Implement Circuit
Swing Circuit
Travel Circuit
Pilot Circuit
24.5 MPa
18.3 MPa
24.5 MPa
5.9 MPa
Drive, Swing and Dig
Travel Speeds:
0 to 4.2 km/h
0 to 2.5 km/h
9.0 min-1
8.6 kNm
Max Digging Depth
3,530 - 3,830 mm
Service Capabilities
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

Comprehensive Support as Standard

Support Chain

At Hitachi we aim to help keep your investment operating safely and in peak performance at all times, to minimise downtime and protect the high residual value associated with the Hitachi product. The services, facilities and products available through the Hitachi Support Chain will help to achieve this, keeping your machine working at its maximum potential.

Peace of Mind

When purchasing a technologically advanced Hitachi product, you can buy safe in the knowledge that your purchase can be backed by an optional unique service and extended warranty program – SOLAS:

  • ervice by Hitachi trained engineers
  • nly genuine and approved parts
  • ife of contract annual inspections
  • ll-round cover
  • econd-hand value enhancement with full dealer service history

When purchasing machinery and equipment for construction projects, it always pays to have a solid financial foundation. Whatever your needs – new or used equipment, a single unit or an entire fleet – you can find flexible finance solutions from Hitachi Capital tailored to your business requirements.

Ready to Help

Talk to us!  If you have a question or would like to make an enquiry, please call us on 0191 430 8400 or use the contact form and we will call you back within 24hrs (or first thing Monday if it’s a weekend).

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Hitachi Construction Machinery (UK)

Copyright © 2021 Hitachi Construction Machinery (UK) Limited, Monkton Business Park North, Hebburn, Tyne and Wear NE31 2JZ. Tel: (0191) 430 8400