Fritsch Milling and Sizing

- Model PULVERISETTE 25 - Power Cutting Mill


For comminution of soft to medium-hard, dry grinding materials as well as fibrous materials and plastics. Max. feed size: 70 x 80 mm

For pre-crushing of dry, soft to medium-hard or fibrous materials and plastics.

Max. feed size: 120 x 85 mm

Areas of Application

For the preliminary comminution of plastics, rubber, films, leather, fabrics, fibres, wood, leaves, roots, animal fodder, grain, corn, peat, tobacco, straw - can be fed at full length - paper, cardboard, derived fuels, metal-free waste, household waste, composites, mobile phone LCD glass, mobile phone keypads, electronic chips, circuit boards (assembled and disassembled), coal, bones, horn, dragées, tablets, cork, drugs, heterogeneous mixture of materials, maize, malt, pasta, herbs, spices, dried meat.
In addition, the Power Cutting Mill can also be used in the pharmaceutical or animal feed industries, in dental, medical and metallurgy technology, at veterinary institutes and for RoHS testing.

Method of Operation

Cutting Mills comminute sample material with a rotor fitted with knives in combination with fixed stator knives by cutting and shearing forces. Due to the progressive cutting geometry between the cutting edges of the rotor and the fixed knives in the grinding chamber, the sample material is automatically transported away and thereby comminuted increasingly fine by shearing forces between the knives until the desired final fineness is achieved.

The practical FRITSCH sieve cassette always automatically ensures the optimal distance to the rotor and since there are practically no dead spaces, the sample material cannot come to a rest anywhere. At the same time, the special FRITSCH-airflow automatically transports the finished comminuted sample to the practical collecting drawer or a larger collecting vessel because of the strong air throughput.

  • Fast, reproducible and gentle pre-crushing – rotor speed 300-360 rpm
  • High-torque geared motor (2.2 kW)
  • Max. feed size: 120 x 85 mm
  • Throughput quantity of up to 85 l/h
  • Defined final fineness due to interchangeable sieve cassettes– 1 – 10 mm
  • Collection vessel 3 litres or 10 litres
  • Easy, fast and thorough cleaning of the grinding chamber and of all cutting tools
  • Standard  funnel for bulk solids 10 litres or protected funnel with pusher 3 litres
  • Variety of rotors available to adapt the cutting performance to suit the sample
  • Stable running and low wear due to patented double cone bearing of rotor
  • Exceptionally long service life through use of replaceable and fixed knives
  • Cutting rotor and sieve cassette can be removed and replaced without tools
  • Externally adjustable cutting gap
  • Housing and closing lid can be lifted to open completely
  • Smooth, easy-to-clean interior grinding chamber walls
  • Optimum airflow for particularly fast size reduction and secure protection against clogging
  • Extensive accessories for simplifying your daily work

Instrument without funnel, cutting tool set (consisting of rotor and fixed knives), sieve cassette, collecting vessel and stand.

Required accessories:

    • Standard funnel for bulk solids 10 litres or protected funnel with sample pusher 3 litres
    • Standard rotor with V-cutting edges and fixed knives made of hardened stainless steel, hardmetal tungsten carbide or chromium-free tool steel or disk milling cutter rotor with indexable inserts and fixed knives made of hardmetal tungsten carbide
    • Sieve cassettes with trapezoidal or square perforation in stainless steel 316L or chromium-free steel DC01
    • Collecting vessel 3 litres or collecting vessel for large quantities 10 litres

Optional accessories:

  • Universal support stand

  • Voltage/connection values:400 V/3~*
  • Frequency:50-60 Hz*
  • Input Power:3240 W*
  • Operating principle:Cutting
  • Max. feed size:
  • (depends on material and funnel)120 x 85 mm
  • Min. sample quantity:100 - 150 ml
  • Max. throughput quantity:
  • (depends on material and sieve size)85 l/h
  • Final fineness:
  • (depends on sieve cassette)1 - 10 mm
  • Feeding:Batchwise/continuous
  • Cutting tools:Cutting rotor
  • Materials of the cutting tools:Hardened stainless steel, hardmetal tungsten carbide, chromium-free tool steel
  • Rotor speed:300 - 360 rpm
  • Weight:75 kg
  • Dimensions: (W x D x H)Table mounted or on stand 45 x 65 x 63 cm
  • Emissions value of workplace according to DIN EN ISO 3746:2005:Approx. 71 dB(A) - (depending on the material to be ground, rotor and sieve cassette used)

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