Ultra Centrifugal Mill ZM 200
 The RETSCH Ultra Centrifugal Mill ZM 200 is used for the rapid fine size reduction of soft to medium-hard and fibrous materials. Because of the efficient size reduction technique and the comprehensive range of accessories the ZM 200 ensures the gentle preparation of analytical samples in a very short time.
Application Examples
chemicals, drugs, spices, coal, synthetic resins, plastics, pharmaceutical
raw materials and finished products, fertilizers, food and feedstuffs, bones, fossil fuels, secondary fuels, and many more
Product Advantages
- versatile in use due to wide range of accessories
- high final fineness
- wide speed range, adjustable from 6 000 to 18 000 min-1
- considerably increased throughput due to optimally matched frequency converter and 3-phase motor
- gentle and very rapid size reduction by 2-step rotor/screen system
- quiet and reliable, easy to clean
- comfortable parameter setting via display and ergonomic 1-button operation
- comfortable safety housing with automatic cover closure
- motor compartment and electronics protected against dust and material penetration
- 2-year warranty, safe design to CE standard
Features
| Applications |
fine grinding |
| Feed material |
soft, medium-hard, brittle, fibrous |
| Material feed size* |
up to 10 mm |
| Final fineness* |
< 40 µm |
| Collector capacity |
with standard cassette up to 300 ml (900 ml)
with mini-cassette up to 20 ml (50 ml)
with paper filter bag up to 1000 ml (3000 ml)
with cyclone up to 2500 ml (3000 ml) or
up to 4500 ml (5000 ml) |
| Motor speed at 50 Hz (60 Hz) |
6000 - 18000 min-1, freely selectable |
| Rotor peripheral speed |
30.9 - 92.8 m/s |
| Grinding chamber material |
stainless steel, titanium, steel 1.4404, stainless steel with wear-resistant coating |
| Drive |
3-phase motor |
| Power consumption |
approx. 1300 W (VA) |
| W x H x D |
410 x 515 x 365 mm |
| Net weight |
approx. 38 kg |
| *depending on feed material and instrument configuration/settings |
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Function Principle  In the Ultra Centrifugal Mill ZM 200 size reduction takes place by impact and shearing effects between the rotor and the fixed ring sieve. The feed material passes through the hopper (with splash-back protection) onto the rotor. Centrifugal acceleration throws it outward with great energy and it is precrushed on impact with the wedge-shaped rotor teeth moving at a high speed. It is then finely ground between the rotor and the ring sieve. This 2-step grinding ensures particularly gentle but fast processing. The feed material only remains in the grinding chamber for a very short time, which means that the characteristic features of the sample to be determined are not altered. The ground sample is collected in the collecting cassette surrounding the grinding chamber or in the downstream cyclone or paper filter bag.
Product overview
Rotor Mills
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