Cutting mills are suitable for the grinding of soft, medium-hard, tough, elastic, fibrous, and heterogeneous mixes of products. Within the group of RETSCH cutting mills, the SM 200 is the universal standard model which covers a vast range of applications.
It is equipped with a strong 2.2 kW motor and operates at a rotor speed of 1.500 rpm. In combination with the optional cyclone-suction-combination, the SM 200 is also suitable for, grinding light or heat sensitive sample materials. A heavy-metal-free version is available to avoid cross-contamination.
Ideal for light & heat-sensitive materials
Instead of the gravity outlet, an optionally available cyclone separator can be connected to the SM 200. The use of the cyclone-suction-combination is advantageous, for example, for light and heat-sensitive samples.
The SM 200 is equipped with double acting cutting bars which substantially increase the number and effectiveness of the cutting events. The parallel section rotor, for example, generates 18 cutting events per rotation.
Operation of the SM 200 is exceptionally simple and safe. A safety switch prevents the mill from being switched on with the door open. An electronic safety check ensures that the door cannot be opened when the motor is running – the motor brake makes the rotor come to an immediate standstill after the mill has been switched off.
The hopper can be folded back to get full access to the grinding chamber which, in combination with the smooth surfaces, greatly facilitates cleaning the mill. The push-fit rotor can be removed without tools.
The SM 200 can be equipped with different rotors, hoppers and bottom sieves. The mill and accessories, including cutting bars and cutting plates, are also available in versions for heavy-metal-free size reduction.
A parallel section rotor and a 6-disc rotor are available in stainless and heavy-metal-free steel for optimum adaptation to sample properties.
The SM 200 can be equipped either with the universal hopper, which is suitable for most samples, or the long-stock hopper which is specially designed for long samples.
The bottom sieves with trapezoid or square holes are made of stainless steel or heavy-metal-free steel.
RETSCH cutting mills are suitable for a vast range of applications. Typical materials include PET preforms, aluminium slag, animal feed, bones, cables, cardboard, electronic components, feed pellets, foils, food, leather, lignite, material mixtures, non-ferrous metals, paper, pharmaceutical products, plant materials, plastic toys, plastics, polymers, refuse derived fuels, resins, rubber, spices, straw, textiles, waste, wood, etc.
fish
wood
nuts
secondary fuels, biofuels
To find the best solution for your sample preparation task, visit our application database.
| Applications | size reduction by cutting |
| Field of application | agriculture, biology, chemistry / plastics, engineering / electronics, environment / recycling, food, medicine / pharmaceuticals |
| Feed material | soft, medium-hard, tough, elastic, fibrous |
| Size reduction principle | shearing, cutting |
| Material feed size* | < 60 x 80 mm |
| Final fineness* | 0.25 - 20 mm |
| Speed at 50 Hz (60 Hz) | 1,500 min-1 |
| Rotor peripheral speed | 9.4 - 11.4 m/s |
| Rotor diameter | 129.5 mm |
| Types of rotors | parallel section rotor / 6-disc rotor |
| Types of hoppers | standard, long stock |
| Material of grinding tools | stainless steel, steel for heavy-metal free grinding, tungsten carbide |
| Sieve sizes | trapezoid holes 0.25 / 0.50 / 0.75 / 1.00 / 1.50 mm square holes 2.00 / 4.00 / 6.00 / 8.00 / 10.00 / 20.00 mm |
| Collector systems / capacities | collecting receptacle 5 l / optional: 30 l collecting unit 0.25 / 0.5 l cyclone-suction combination (0.25 l - 30 l) |
| Drive | 3-phase motor |
| Drive power | 2.2 kW |
| Electrical supply data | different voltages |
| Power connection | 3-phase |
| Engine brake | yes |
| Protection code | IP54 |
| W x H x D closed | 576 (1090 opened) x 1675 x 760 mm (with base frame and standard hopper) |
| Net weight | ~ 90 kg without hopper |
| Standards | CE |
*depending on feed material and instrument configuration/settings
Size reduction in the Cutting Mill SM 200 takes place by cutting and shearing forces. The sample comes into contact with the rotor, and is comminuted between the blades and the stationary double acting cutting bars inserted in the housing. In the 6-disc rotor, spirally arranged reversible hard metal plates operate by cutting in sequence. The knives of the parallel section rotor carry out comminution with a powerful cutting action. The dwelling time of the sample in the chamber is short; as soon as it is small enough to pass through the openings of the bottom sieve it is discharged through the gravity outlet and collected in the receptacle. The optional available cyclone-suction-combination has a cooling effect on the sample but also improves the discharge of material from the grinding chamber. The rotorspeed of 1.500 min-1 ensures gentle and rapid size reduction.
