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| Applications | preliminary and fine grinding |
| Field of application | chemistry / plastics, construction materials, engineering / electronics, geology / metallurgy, glass / ceramics |
| Feed material | medium-hard, hard, brittle |
| Size reduction principle | pressure, friction |
| Material feed size* | < 20 mm |
| Final fineness* | 50 µm for hardened steel discs 100 µm for tungsten carbide or zirconium oxide discs |
| Speed at 50 Hz (60 Hz) | 440 min-1 (528 min-1) |
| Material of grinding tools | zirconium oxide, hardened steel, tungsten carbide, manganese steel |
| Gap width setting | continuous, 0.05 - 5 mm |
| Rotating direction | doubling the life time of the discs by changing the direction of rotation |
| Collector capacity | 2.5 l |
| Drive | 3-phase geared motor |
| Drive power | 1.5 kW |
| Electrical supply data | different voltages |
| Power connection | 3-phase |
| Protection code | IP 55 |
| W x H x D closed | 440 x 400 x 870 mm |
| Net weight | ~ 140 kg |
| Standards | CE |
*depending on feed material and instrument configuration/settings
In the DM 200 the feed material enters the dustproof chamber from the filling hopper and is fed centrally between two vertical grinding discs. A moving grinding disc rotates against a fixed one and draws in the feed material. The necessary comminution effects are generated by pressure and frictional forces. The progressively arranged grinding disc meshing first subjects the sample to preliminary crushing; centrifugal force then moves it to the outer regions of the grinding discs where fine comminution takes place. The processed sample exits through the grinding gap and is collected in a receiver. The gap width between the grinding discs is continuously adjustable and can be adjusted during operation in the range between 0.1 and 5 mm; an additional observation window is provided for checking the gap setting.
