ISO 9001 zertifiziert | Qualität aus über 80 Jahren Erfahrung
ISO 9001 certified | Quality from over 80 years of experience

+49 212 / 33 99 – 0

+49 212 / 33 99 – 0

Marktronic PortaDot 100-75

The robust mobile dot marker offers the largest marking area and can optionally be operated pneumatically. Ideal for steel mills and steel trade. (Marking area 100 mm x 75 mm)

The Marktronic PortaDot 100-75 is another step into the future of simple and flexible marking of your products. The workpiece no longer has to be brought to the marking machine, instead you go to the product with the dot marking machine. Almost all materials (up to 62 HRC, 800 VHN) can be marked with the carbide stylus.

Programmable markings:

  • in straight lines that can be displayed at any angle (0 – 360°)
  • arc-shaped or circular
  • on the circumference of cylindrical workpieces

Faster text change than with conventional marking systems:

Text, font height and embossing thickness can be easily changed using the standard keyboard. Simple logos and trademarks can be programmed by the user and permanently stored for future use.

Test run facility:
The engraving stylus traverses the area to be marked, reducing mis-marks.

The Varidot font allows the dot pitch to be changed for better display of characters in large font heights. The possible reduction of the dot pitch creates an almost continuous line.

The graver marks most materials and hardened metals up to 62 HRC, 800 VHN.

The machine consists of marking head, computer, keyboard, connecting cable (5 m) and an attachment for straight workpieces.

Technical data

Standard marking area

  • 100 x 75 mm

Marking height

  • from 0.5 mm to 50 mm in steps of 0.15 mm


  • 5 x 7 dot matrix
  • 7 x 9 dot matrix
  • Varidot
  • 5 x 9 dot matrix OCR
  • Varidot OCR

Storage capacity

  • 150 layouts (optional 1,350)

Serial number marking

  • Ascending or descending, up to 30 different serial numbers per layout; both numbers and letters can be used for the serial numbers.


  • Up to 30 different variables per layout

Marking speed:

  • Up to several characters per second, depending on font height and layout. However, it is important that trial marks are made on workpieces to determine the marking speed for the particular application.

Power supply

  • 110V to 230V
  • 50Hz to 60Hz


  • Marking head approx. 8 kg
  • Calculator approx. 9 kg

The following options are also available at extra cost:

  • Sheet marking
  • Memory for 1,350 layouts
  • Right-hand engraving, font length can be changed, repeated embossing of a dot
  • I/O interface for sending and receiving digital data
  • RS232 serial interface for communication with external computers
  • Serial numbers, variables and password protection at different levels
  • time, date
  • different marking speeds
  • electrical depth marking
  • dust-protected keyboard
  • 3 prism attachments for different diameters

Portadot 100 75

View in catalog
Marktronic Portadot 100x75