Roll crushers

Roll crushers are used for coarse crushing of hard brick or ceramic materials and clay to a grain size of approximately 100 x 50 x 30 mm.

The crushing of the raw material occurs between two shafts, on which there are crushing discs made of steel sheet.  The active surfaces of the discs are fitted with a wear-resistant weld combined with materials containing chromium and tungsten carbides.

The shredder shafts are mounted in rolling bearings. The distance between the shafts is mechanically adjustable using the motion screws.




AWELD mixers are designed as one-shaft or double-shaft. They have applications in the ceramic and brick industries, in the production of refractory materials, industrial ceramics, in the manufacture of sealants in the steel industry, in the mixing process of building material, concrete and mortar mixtures and for separating solid and liquid substances. 

AWELD mixers are produced in a number of auger diameters ranging from 200 mm to 750 mm.  The power consumption of the presses ranges from 10 kW to 180 kW.

During their design and manufacture, we use all the experience gained during individual constructions and modifications, especially of brick vacuum units, which are always made for specific customer needs.

The active part of the machine - augers, auger chamber coatings, winch dyeing machines - they are usually provided with protection against wear.

For more details, see chapter Protection against wear.

For vacuum units, the screw material is extruded through a screen  into the vacuum chamber. The replacement of screens can be performed by a hydraulic mechanism. This allows for the cleaning or replacement of screens without opening the vacuum chamber or removing the mixers, and it takes place without downtime in production.    Mixer shafts are overhung. By overhanging the shafts, the possibility of air suction around the bearings in the vacuum chamber and the subsequent deterioration of the vacuum is eliminated.



Mixer type Diameter of the augers
Length of the mixer bed
Output of the machine
[m³of clay/hour]
Output of the main AC motor

Weight approx.

AM 283 280 3100 max. 5 max. 30 1,8
ADM 40S 400 2000 max. 20 max. 45 3
ADM 50S 500 2000 max. 40 max. 75 5
ADM 55S 550 2450 max. 50 max. 90 8
ADM 60S 600 3200 max. 55 max. 110 9,5


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Circular screen feeder

The frame of the machine including the baseplate is made as the weldment. The body with the screens has flat, not movable bottom. The top part of the body is formed by thick steel spiral on which a skip (loader) is fixed. The feeder screens are made from the wear plate. The holes in the screens are cut by plazma cutting machine under water. This way of production ensures the conic shape of holes as well as a good throughput of the material. Moreover, this technical solution guarantees that the material of screens is not influenced by temperature and its wear resistant properties are maintanined without any change.

The bottom is made from the exchangeable plates, which are made from the wear plate. The rabble and scraping arms are made as the weldment with the wear resistant hardfacing, which is also used on the lining of the arms. We have great expericence with CrC and tungsten carbide materials, which both assure a  great protection against the abrasion. The barrel is equipped with knives, which can be fitted with the steam system. The main shaft with the arms is driven by the AC motor via front-end gear-box and planetary gear-box. The collecting plate is driven by the self-contained AC motor with the gear. Smooth run-up of the machine and regulation of rev is managed by frequency converter. The oiling of gear boxes and shafts is managed by oil cartridge without forced circulation.


Circular screen feeder type APM 9 APM 15 APM 19
Inner diameter of the body [mm] 900 1500 1900
Height of the body [mm] 560 1050 1050
Number of screens 4 10 10
Output of the main AC motor [kW] 22 50-75 90-110
Diameter of the collecting plate [mm] 1500 2800 3200
Output of the machine [m³ of clay/hour] 5-7 max. 30 max. 70
Weight approx. [t] 3,1 13 16
Number of rotations of arms/min. 10 max. 9 max. 9



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