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 the Planetary Ball Mills result in very high
pulverization energy and therefore short grinding
times.
The PM 100 is a convenient benchtop model with 1 grinding
station.
Application Examples
Alloys, bones, ceramics, charcoal, chemical products, coal,
coke, electronic scrap, fibres, glass, limestone, minerals, ores,
paper, plant materials, quartz, seeds, sewage sludge, soils, waste
samples, wood, ...
Product Advantages
- powerful and quick grinding down to nano range
- perfect stability on lab bench thanks to FFCS technology
- innovative counter weight and imbalance sensor for unsupervised
operation
- 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
- reproducible results due to energy and speed control
- suitable for long-term trials and continuous use
- 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
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:-2.
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 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 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.