Conjet ACR™ Robot


Robot 101 Nalta is the world’s smallest hydrodemolition concrete removal robot. The Nalta allows selective concrete removal in narrow, confined areas inaccessible with other methods. It is remotely operated from a distance of up to 50 meters.

Nalta is specifically designed to operate where space is limited, such as between a building and scaffolding. It can also quickly be dismantled into components small and light enough to be carried by one man.

Nalta can operate on horizontal, vertical, and angled surfaces, including ceilings and underneath bridge decks.

Nalta consists of a cutting head mounted on a feed beam. The feed beam features step units that connect to standard scaffolding pipes. You also have the ability to design custom pipe framing to suit your specific needs.

Optimal for confined spaces:

  • Bridge bearing foundations
  • Dam surfaces and spillways
  • Dry docks and quay docks
  • Canals
  • Under water


  • Light and compact for narrow and inaccessible areas
  • No electricity at the cutting head
  • Operates under water
  • Remotely controlled using handheld CCU for operator safety and precision at long distances
  • Can be dismantled for easy transportation and handling
  • Frame is built from standard components
  • Hydrodemolition applied
  • Prepared for Conjet Connect

Technical Data

Standard Configuration I CE EMC Certified


Length per section

990 mm (3ft 3in)

Weight per section

8 kg (18 lb)

Weight lance unit

12 kg (26 lb)

Weight step unit

9 kg (20 lb)

Weight hydraulic unit

90 kg (198 lb)


Max reaction force 

600 N

Max water pressure

3 000 bar


Electrical supply required

230 V, 10 A / 3 phase, 380 – 480 V

Secure a long lifetime and trouble-free operation

To secure a long lifetime, trouble-free operation and added functionality of your ACR™ robots, Conjet has developed add-ons and services to enable just that.

  • Technical support
  • Spare and wear parts
  • Training
  • Add-ons

Powerpacks & Accessories for Jetframe 101 Nalta

Powerpack 14

The endurance runners at particularly favourable operating costs.

Powerpack 20

The endurance runners at particularly favourable operating costs.

Explore full product range

Automated Concrete Removal using hydrodemolition technology

Successful projects

Kapellskär Port Sweden

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