disc finishing units – ECO-MAXI

The modular concept of the Eco-Maxi makes it ideal for small series production. Their high-tech design makes these machines extremely economical, with savings being as much as 60 % compared to the cost of conventional finishing. To cater for specific applications, the Eco-Maxi is available in the versions "magnetic", "wet" and "dry" and as a flexible all-rounder, the "basic" model.

  • Clean and bright workpiece surfaces Completely removes any traces of sanding/grinding and casting skin for perfect results.
  • A surface finish equal in quality to that of manual polishingPuts a shine even on inaccessible areas of intricate workpieces and completely removes oxidation discoloration and any residual investment material.
  • Flexible in useThis machine type is the first to use three separate or up to three different finishing processes in a single machine.


Otec Video

Eco-Maxi - 3-in-1 System: Magnetpolishing, Grinding & Polishing

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  • High-tech jewellery polishing

  • Gentle process fullyprotect gemstones during finishing

  • Results comparable to hand finishing

  • Perfect shiny surfaces

ECO maxi "basic" Series

The ECO-Maxi basic drive unit is designed to get the best out of all three processes. Depending on the container chosen, a single drive unit can be used for magnetic polishing, wet grinding or dry polishing. This is done by simply attaching the appropriate interchangeable container. To cater for specific applications, the ECO-Maxi "basic" is available either with three containers "wet", "dry" and "magnetic" or only with the container for magnetic polishing.

Wet grinding obtains perfect results after just 3-4 hours. The use of a special "soft" abrasive medium ensures that the surface of the workpiece does not become hardened – reliably preventing the surface from becoming pitted. The results are the complete removal of any traces of sanding/ grinding and casting and clean, bright workpiece surfaces.

During dry polishing, very fine polishing granulates made from walnut shell ensure a perfect surface finish. Material removal is in the micro range. No damage to diamonds, zirconia or pearls in their settings. Processing time for initial polishing approx. 2-3 hours, for final polishing approx. 30 minutes, giving extremely smooth surfaces and a brilliant shine comparable to that achieved by manual polishing.

standard equipment

  • Speed control via frequency inverter
  • Bayonet fitting for container
  • LCD indicating speed and processing time
  • Automatic container detection
  • 6 l process container for wet finishing including dosing pump and waster water tank
  • 6 l process container for dry finishing
  • 6 l process container for magnetic polishing incl. 200 g rounded stainless steel pins M 4/7 and 1 l compound SC 3

ECO maxi "magnetic" Series

This machine type is designed exclusively for magnetic polishing applications. This is the preparatory stage for wet finishing and replaces the traditional electrolytic polishing bath. Oxide discolorations and investment material residues are completely removed after approx. 15 - 30 minutes and even inaccessible areas of intricate workpieces are polished to a high shine.


standard equipment

  • Speed control via frequency inverter
  • LCD indicating speed and process time
  • up to 1,900 rpm
  • Automatic change in the direction of rotation
  • 6 l process container
  • 200 g rounded stainless steel pins M 4/7
  • 1 l compound SC 3

Interchangeable containers

Magnetic polishing

6 l interchangeable container with magnetic polishing medium

recommended process quantities*:

  • Granulate: 200 g steel pins
  • Workpieces: approx. 300 g

Dry polishing

6 l interchangeable container for dry polishing

recommended process quantities*:

  • Granulate: 2.2 kg walnut shell granulate
  • Workpieces: approx. 300 g

Wet grinding

6 l interchangeable container for wet finishing (5.5 kg)

recommended process quantities*:

  • Granulate:
    3 kg plastic abrasive
    or 12 kg stainless steel polishing agent
    or 4 kg porcelain polishing agent
  • Workpieces: approx. 300 g

Processing media sets

Dry finishing


  • 5 kg H1/100 walnut shell granulate for pre-polishing
  • 5 kg H1/500 walnut shell granulate for fine polishing
  • 1 kg polishing paste P 6
  • 1 scoop
  • 1 ladle

Wet finishing


  • 2 kg PA 10 plastic abrasive, red (coarse grinding)
  • 2 kg KA 10 plastic abrasive, red (coarse grinding)
  • 2 kg PX 10 plastic abrasive, white (fine grinding)
  • 2 kg KX 10 plastic abrasive, white (fine grinding)
  • 10 l compound SC 13


Manual screen

A variety of screen sizes are available


for water storage jar
(only availab for the ECO-Maxi-I "wet")


for storage containers
(only available for the ECO-Maxi-I "wet")

Ring holder

for heavy rings (>6 g). Prevents the rings from colliding with one another.

Emergency cut-out

when water supply is depleted
(only available for ECO-Maxi-I "wet")


Flyer as PDF file for downloading to your computer. To open the file, you need the  Adobe Reader.


Serie ECO (Jewellery)(English - 1.33 MB)

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