Retsch Planetary Ball Mill PM 400

Retsch Planetary Ball Mill PM 400, 220-230 V, 50/60 Hz

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 400 is a robust floor model with 4 grinding stations.

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, ...

Product Advantages

• powerful and quick grinding down to nano range
• grinding with up to 26.8 x acceleration of gravity
• 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
• 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

Function Principle
The grinding jars are 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 (or 1:-2.5 or 1:-3). 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.

on wheels (please order grinding jars and balls separately)