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Cutting Mill SM 200 The universal standard model

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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. 

For universal applications

  • Feed size <60 x 80 mm
  • Defined final fineness due to bottom sieves with aperture sizes from 0.25 - 20 mm
  • Optimum cutting effects thanks to double acting cutting bars
  • Quick and easy cleaning due to smooth surfaces, fold back hopper, push-fit rotor and sieves
  • Operation with gravity outlet or optionally available cyclone unit possible
  • Wide range of accessories including various hoppers, collection systems, rotors and sieves
  • Highest safety standards due to engine brake, central locking device, electronic safety check and safety base frame

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. 

  • Increased throughput
  • Improved sample discharge from the grinding chamber
  • Efficient cooling of sample and cutting tools
  • Collecting vessels with 0.25 - 0.5 - 1 - 2 - 5 and 30 liters are available for the cyclone unit

Double acting cutting bars

Double acting cutting bars

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.

Rotor Types

Rotor Types

A parallel section rotor and a 6-disc rotor are available in stainless and heavy-metal-free steel for optimum adaptation to sample properties.

Hopper Types

Hopper Types

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.

Bottom Sieves

Bottom Sieves

The bottom sieves with trapezoid or square holes are made of stainless steel or heavy-metal-free steel.

 fish

fish

 wood

wood

 nuts

nuts

secondary fuels, biofuels

secondary fuels, biofuels

Cutting Mill SM 200 Functional Principle

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.

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