Cutting Mills for pre-cutting and fine grinding

RETSCH cutting mills provide highly efficient primary size reduction of heterogeneous material mixes but are also suitable for grinding soft, medium-hard, elastic or fibrous samples. Cuttings mills offer a high level of operational safety and convenience. The wide selection of accessories allows for easy adaptation to different application requirements.

Cutting Mill SM 100

Feed material: soft, medium-hard, elastic, fibrous
Material feed size*: < 60 x 80 mm
Final fineness*: 0.25 - 20 mm
Speed at 50 Hz (60 Hz): 1,500 min-1
Product details

Cutting Mill SM 200

Feed material: soft, medium-hard, tough, elastic, fibrous
Material feed size*: < 60 x 80 mm
Final fineness*: 0.25 - 20 mm
Speed at 50 Hz (60 Hz): 1,500 min-1
Product details

Cutting Mill SM 300

Feed material: soft, medium-hard, tough, elastic, fibrous
Material feed size*: < 60 x 80 mm
Final fineness*: 0.25 - 20 mm
Speed at 50 Hz (60 Hz): 100 - 3000 min-1
Product details

^{*depending on feed material and instrument configuration/settings}

Cutting mill features

Powerful size reduction – also of heterogeneous material mixes
Selection of different cutting mill models to suit customer requirements
Optimum cutting effects thanks to double acting cutting bars (SM 200 & SM 300)
Cutting Mill SM 300 with variable speed from 700 to 3,000 min^-1, 3 kW drive with high torque
Rotational Energy Storage Technology (RES) provides exceptional cutting power reserves (SM 300)
Defined final fineness due to bottom sieves with aperture sizes from 0.25–20 mm
Low heat build-up
Quick and easy cleaning thanks to push-fit rotors, smooth surfaces and foldback hoppers (SM 200 and SM 300)
Highest safety standard due to motor brake, central locking device and electronic safety check
Wide range of accessories including various hoppers, collecting systems, rotors and sieves

Cutting Mill Technology

Size reduction in cutting mills is effected by cutting and shearing forces.

The sample passes through the hopper into the grinding chamber where it is seized by the rotor and is comminuted between the rotor blades and the stationary cutting bars inserted in the housing.

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 and collected in the receptacle.