FRITSCH GmbH - PULVERISETTE 19 large variable speed 50 - 700 rqm

Manufactured by  FRITSCH GmbH
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Variable 50 – 700 rpm for powerful comminution of larger amounts

Variable 50 – 700 rpm for powerful comminution of larger amounts

The PULVERISETTE 19 large is our powerful low-speed Universal Cutting Mill for fast reproducible comminution of hard, tough-elastic and temperature sensitive materials and plastics with a maximum feed size of 120 x 85 mm and a throughput of up to 85 l/h with a low rotational speed of 50-700 rpm and a maintenance-free 2.8 kW three-phase motor with frequency converter.

Due to the variable rotational speed adjustment in increments of ten between 50 and 700 rpm and a torque of up to 67 Nm enables the PULVERISETTE 19 large due to the combination of low cutting rate and extreme cutting forces a very powerful comminution.

At the same time, it is the ideal solution for all cases where e.g. thermal damage, the loss of highly volatile substances, or an excessively high fine share need to be avoided. And the PULVERISETTE 19 large is also ideal for RoHS tests. Due to Clean Design the PULVERISETTE 19 is quickly and simply cleaned and offers a reliable protection against cross-contamination.

WORKING PRINCIPLE

Unique grinding chamber geometry

The sample material is comminuted according to the cutting principle of scissors between the cutting edges of the rotor and the fixed knives in the grinding chamber until the desired final fineness is achieved. Unique grinding chamber geometry: The grinding chamber is designed with minimal dead space and progressive cutting geometry between rotor and fixed knives. The sample material is continuously moved during comminution and cannot settle anywhere. In conjunctions with the special air flow, this is the basis for swift, blockage-free operation and fast cleaning without residue.

Running stabilisation due to flywheel mass

The Universal Cutting Mill PULVERISETTE 19 large is equipped with a flywheel mass to stabilize the drive torque. This ensures stable operation even for extreme short-term load, as well as an optimal comminution result.

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Features of PULVERISETTE 19 large variable speed 50 - 700 rqm
  • Fast, reproducible and gentle pre-crushing – rotor speed 50/700 rpm
  • Max. feed size: 120 x 85 mm
  • Throughput quantity of up to 85 l/h
  • Defined final fineness due to interchangeable sieve cassettes 0.5 – 10 mm, (further sieve sizes available)
  • Collection vessel 3 litres or 10 litres
  • Optimised Clean Design for maximum ease of cleaning
  • Practical operation directly on the front panel
  • Externally adjustable cutting gap
  • Maintenance–free 2.8 kW three-phase motor with frequency converter
  • Single-phase versions with maintenance-free three phase frequency converter
  • Double cone bearing of the rotor for long service life
  • Different rotors for multi-functional use
  • Rotor knives and fixed knives are exchangeable for long-lasting quality
  • Wear-free labyrinth seals made of stainless steel on both sides of the rotor – on the shaft and in the lid
  • Protected funnel with sample pusher, 3 litres
  • Optimum airflow for particularly fast size reduction and secure protection against clogging
  • Extensive accessories for simplifying your daily work
General Specifications
Feed Materialshard, tough-elastic, temperature-sensitive samples
Grinding Tool Materialshardened stainless steel, hardmetal tungsten carbide, chromium-free tool steel, stainless steel 316L, chromium-free steel DC01
Grinding Toolsrotor with V-cutting edges and fixed knives, rotor with notched edges, rotor with straight cutting edges and fixed knives, disk milling cutter rotor with indexable inserts and fixed knives
Max. Feed Particle Size120 120 x 85 mm
Maximum Speed700 rpm
Mill TypeCutting Mill
Depth 65 cm
Height63 cm
Width 45 cm
Weight88 kg
Additional Specifications

Working PrincipleCutting

Max. throughput (depending on the material and sieve size)

85 l/h

Final fineness (depends on sieve cassette - additional sieve sizes available)

0.5 - 10 mm

Feeding

batchwise/continuous

Rotor speed

50-700 rpm

Rotor peripheral speed

0.26-3.66 m/s

Drive

Up to 2.8 kW three-phase motor with frequency converter and flywheel mass for stabilising the drive torque

Electrical Details/torque

380-460 V/3~, 50-60 Hz, 2800 Watt, 67 Nm

Emission sound pressure level at the workplace according to DIN EN ISO 3746 (depending on the material to be ground, rotor and sieve cassette used)

LpAd = 71 dB


The Universal Cutting Mill PULVERISETTE 19 large with variable rotational speed 50-700 rpm is also available in the following voltages and versions:

Order no.

Electrical details / Torque


(three-phase motor with frequency converter and flywheel mass for stabilising the drive torque)

19.4040.00

for 380-460 V/3~, 50-60 Hz, 2800 watt, 67 Nm

19.4000.00

for 200-240 V/1~, 50-60 Hz, 2350 watt, 26 Nm

The PULVERISETTE 19 large with a voltage of “/3~” can only be operated on a three-phase supply network.

Despite the frequency converter, the three-phase version “/3~” is definitely preferable instead of a single-phase version “/1~”, because the three-phase version achieves a higher torque mass and pulling power.

The single-phase versions of the Universal Cutting Mills PULVERISETTE 19 large also have an especially maintenance-free three-phase motor with a frequency converter.

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