Variable Speed Rotor Mill
PULVERISETTE 14premium line
Fast pre- and fine-grinding in one instrument
The FRITSCH Variable Speed Rotor Mill PULVERISETTE 14 premium line offers impact, shearing and cutting comminution in one instrument – with a higher performance, better cooling and is significantly quieter than comparable instruments.
Its powerful motor is ideal for the particularly fast comminution of soft to medium-hard, brittle as well as fibrous materials and temperature-sensitive samples with an extremely fast sample throughput of up to 15 litres and more per hour, depending on the material and parameter settings. Even particularly hard and fatty materials such as feed pellets can be easily comminuted with the PULVERISETTE 14 premium line. Samples which are difficult to grind or extremely temperature-sensitive (e.g. plastics) can be embrittled with the addition of liquid nitrogen and subsequently ground in the PULVERISETTE 14 premium line.
The heavy-duty motor and especially durable ceramic bearings ensure a particularly high impact and rotor speed with an extra powerful 22,000 rpm.
Your advantage: finer results in shorter times. Due to its high performance, the PULVERISETTE 14 premium line is the ideal Variable Speed Rotor Mill for comminution at pilot plant-scale in the plastics industry.
Impact and shearing
Inside the Variable Speed Rotor Mill PULVERISETTE 14 premium line, the sample is comminuted by impacting against the ribs of the impact rotor, rotating at high speed and also sheared between the rotor teeth and the inserted sieve ring.
Heavy-duty motor with ceramic bearings
The heavy-duty motor and especially durable ceramic bearings ensure a particularly high impact and rotor speed with extra powerful 22,000 rpm. Your advantage: finer results in shorter times. And a long-term investment, which is definitely worth it.
Your advantage: finer results in shorter times. The integrated stopwatch function for time recording, e.g. for new samples, is particularly practical. In addition as a system monitoring safety feature, the instrument‘s power consumption and the system temperature are displayed, and a warning is shown in case of overload.
The strong airflow produced by the motor, an ingenious air routing, as well as special cooling fi ns on the rotors further intensify cooling. Melting or sticking is greatly reduced, even with temperature-sensitive samples. The motor airflow can be further enhanced by the option to connect an exhaust system and the cooling effect of the sample can be additionally increased by using a FRITSCH Cyclone separator.
In the PULVERISETTE 14 premium line, the grinding and electrical chambers are completely separated from each other. Your advantage: The air in the grinding chamber does not come into contact with the electronics and stays cooler – and the electronics are protected from dust. A clever idea, which results in a longer service life for your mill and increased safety with no faulty circuits.
For fast cleaning
The well-conceived Clean Design of the Variable Speed Rotor Mill PULVERISETTE 14 premium line covers all the areas, which make the cleaning of your mill as easy as possible: All the surfaces are designed to be extremely dirt-resistant and easy to clean. Every surface which comes into contact with the samples can be sterilised.
And all the parts that need regular cleaning – funnel, collecting vessel with lid, rotor, sieve ring/sieve shells holder and labyrinth disk – each can be removed with a single motion without tools and can be cleaned in the ultrasonic bath or in the dishwasher. The innovative laser welding of the sieve rings enables due to less dead spaces a significantly easier cleaning, as well as greater stability and longer service life.
Temperature gentle fine grinding with the FRITSCH Cyclone separators
FRITSCH Cyclone separators for sample exhaustion: Their powerful airflow ensures simple feeding and faster throughput. Due to faster operation and the additional stronger cooling, the thermal load of the sample materials is minimized, so that temperature-sensitive samples can also be ground without any problems. The powerful airflow also enables the use of finer sieve rings to achieve a higher final fineness – even for materials, which are otherwise difficult to grind finely, such as electrostatically-charged plastics or powder coatings. The ground sample is drawn directly into the screwed-on sample glass, in which it can be transported, stored and easily removed for analysis. FRITSCH offers two models to match your application needs:
FRITSCH high-performance Cyclone separator: The compact high-performance Cyclone separator, which is made completely out of stainless steel 304 is in combination with the exhaust system, particularly indispensable in the analytical sector and the food and pharmaceutical industries. Due to its high surface quality, it offers enhanced resistance to corrosive media such as alkalis and acids – and is especially easy to clean with a wide range of possible cleaning agents, without leaving any residues. The Cyclone separator can also be fully dismantled, meaning that it can be completely emptied, flooded and sterilized, providing reliable protection against cross contamination.
FRITSCH small volume Cyclone separator: We designed the compact FRITSCH small volume Cyclone separator especially for exhaustion of small sample quantities. It is made of plastic, can be dismantled completely and cleaned in a dishwasher for reliably preventing contaminations. The comminuted sample is collected in a screwed-on sample glass of 250 or 500 ml volume.
The small volume Cyclone separator can be combined with the exhaust system, which can be ordered along, or can also be used with the supplied fine-dust filter 80-100 µm for passive utilisation.
Unique double use as Cutting Mill
Only available from FRITSCH: The PULVERISETTE 14 premium line is the only Variable Speed Rotor Mill on the market, which is also suitable for cutting. As a Cutting Mill it is ideal for fast, efficient pre- and fine comminution of soft to hard-tough, fibrous materials and plastics with a max. feed size < 10 mm.
Easy conversion: Simply insert a labyrinth disk, a collecting vessel, a cutting rotor with cooling fi ns, a sieve shells holderwith fixed knives and sieve shells as well as the lid of the collecting vessel. The comminution then takes place by cutting and shearing. The instrument detects the inserted labyrinth disk and automatically operates optimised with up to 15,000 rpm and a rotor peripheral speed of up to 69 m/s for extremely high final finenesses. Cutting rotors, fi xed knives and sieve shells made of different materials can be used for controlling the abrasion behaviour – for each application the perfect solution. The selected sieve shells, which are offered with trapezoidal or round perforation from 0.08 – 4 mm, determine the desired final fineness. And the use of a FRITSCH Cyclone separator will further improve throughput and cooling and is indispensable for finer mesh sizes.
Especially convenient: In contrast to conventional Cutting Mills, the entire grinding chamber of the PULVERISETTE 14 premium line – not only the cutting rotor and sieve insert, but also the collecting vessel with lid and fixed knives – can be removed and cleaned in the dishwasher. And for sterile comminution, all grinding parts, which come into contact with the sample and the grinding chamber itself, are autoclavable.
Configure your Variable Speed Rotor Mill PULVERISETTE 14 premium line exactly to your specific application
The Variable Speed Rotor Mill PULVERISETTE 14 premium line is equipped with a funnel made of polyamide and stainless steel 316L and funnel lid. Order according to your task the suitable collecting vessel with lid and labyrinth disk, impact resp. cutting rotor, sieve ring resp. sieve shells. This is the basic equipment needed for utilising the Variable Speed Rotor Mill or Cutting Mill.
Directly controlled by and precisely matched to the mill, the FRITSCH Vibratory Feeder LABORETTE 24 always ensures the correct feed rate – ideal for the slow feeding of small or smallest material quantities or for grinding larger quantities. An IQ/OQ documentation is available to support equipment qualification.