Planetary Ball Mill PM 100 CM

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Planetary Ball Mills are used wherever the highest degree of fineness is required. Apart from the classical mixing and size reduction processes, the mills also meet all the technical requirements for colloidal grinding and have the energy input necessary for mechanical alloying processes. The extremely high centrifugal forces of a planetary ball mill result in very high pulverization energy and therefore short grinding times.

The PM 100 CM is a convenient benchtop model with 1 grinding station. It operates in centrifugal mode mode, which leads to a more gentle size reduction process with less abrasion.

You may also be interested in the High Energy Ball Mill Emax, an entirely new type of mill for high energy input. The unique combination of high friction and impact results in extremely fine particles within the shortest amount of time.

Application Examples

alloys, bentonite, bones, carbon fibres, catalysts, cellulose, cement clinker, ceramics, charcoal, chemical products, clay minerals, coal, coke, compost, concrete, electronic scrap, fibres, glass, gypsum, hair, hydroxyapatite, iron ore, kaolin, limestone, metal oxides, minerals, ores, paints and lacquers, paper, pigments, plant materials, polymers, quartz, seeds, semi-precious stones, sewage sludge, slag, soils, tissue, tobacco, waste samples, wood, ... continue to application database

Product Advantages

  • powerful and quick grinding down to nano range
  • reproducible results due to energy and speed control
  • suitable for long-term trials
  • 2 different grinding modes (dry and wet)
  • optional pressure and temperature measuring system PM GrindControl
  • measurement of energy input
  • wide range of materials for contamination free grinding
  • Safety Slider for safe operation
  • perfect stability on lab bench thanks to FFCS technology
  • innovative counter weight and imbalance sensor for unsupervised operation
  • gentle grinding in centrifugal mode
  • comfortable parameter setting via display and ergonomic 1-button operation
  • automatic grinding chamber ventilation
  • 10 SOPs can be stored
  • programmable starting time
  • power failure backup ensures storage of remaining grinding time

Features

Applications pulverizing, mixing, homogenizing, colloidal milling
Field of application agriculture, biology, Chemistry, construction materials, engineering / electronics, environment / recycling, geology / metallurgy, glass / ceramics, medicine / pharmaceuticals
Feed material soft, hard, brittle, fibrous - dry or wet
Size reduction principle impact, friction
Material feed size* < 10 mm
Final fineness* < 1 µm, for colloidal grinding < 0.1 µm
Batch size / feed quantity* max. 1 x 220 ml, max. 2 x 20 ml with stacked grinding jars
No. of grinding stations 1
Speed ratio 1:-1
Sun wheel speed 100 - 650 min-1
Effective sun wheel diameter 141 mm
G-force 33.3 g
Type of grinding jars "comfort", optional areation covers, safety closure devices
Material of grinding tools hardened steel, stainless steel, tungsten carbide, agate, sintered aluminium oxide, silicon nitride, zirconium oxide
Grinding jar sizes 12 ml / 25 ml / 50 ml / 80 ml / 125 ml / 250 ml / 500 ml
Setting of grinding time 00:00:01 to 99:59:59
Interval operation yes, with direction reversal
Interval time 00:00:01 to 99:59:59
Pause time 00:00:01 to 99:59:59
Storable SOPs 10
Measurement of input energy possible yes
Interface RS 232 / RS 485
Drive 3-phase asynchronous motor with frequency converter
Drive power 750 W
Electrical supply data different voltages
Power connection 1-phase
Protection code IP 30
Power consumption ~ 1250W (VA)
W x H x D closed 630 x 468 x 415 mm
Net weight ~ 86 kg
Standards CE
Patent / Utility patent Counter weight (DE 20307741), FFCS (DE 20310654), SafetySlider (DE 202008008473)

Please note:
*depending on feed material and instrument configuration/settings

Function Principle

The grinding jar is arranged eccentrically on the sun wheel of the planetary ball mill. The direction of movement of the sun wheel is opposite to that of the grinding jars in the ratio 1:-1.
The grinding balls in the grinding jars are subjected to superimposed rotational movements, the so-called Coriolis forces. The difference in speeds between the balls and grinding jars produces an interaction between frictional and impact forces, which releases high dynamic energies. The interplay between these forces produces the high and very effective degree of size reduction of the planetary ball mill.

Planetary mills with a single grinding station require a counterweight for balancing purposes. In the Ball Mill PM 100 CM this counterweight can be adjusted on an inclined guide rail. In this way the different heights of the centers of gravity of differently-sized grinding jars can be compensated in order to avoid disturbing oscillations of the machine.

Any remaining vibrations are compensated by feet with some free movement (Free-Force Compensation Sockets). This innovative FFCS technology is based on the d’Alembert principle and allows very small circular movements of the machine housing that result in an automatic mass compensation. The laboratory bench is only subjected to minimal frictional forces generated in the feet.

In this way the PM 100 CM ensures a quiet and safe operation with maximum compensation of vibrations even with the largest pulverization forces inside the grinding jars and therefore can be left on the bench unsupervised.

Subject to technical modifications and errors