2016 Retsch PM400 Planetary Ball Mill with 4 Spider Clamps

Max. speed 400 rpm, large sun wheel

Up to 10 mm feed size and 0.1 µm final fineness

4 grinding stations for jars from 12 ml up to 500 ml, jars of 12 – 80 ml can be stacked (two jars each)

Application Examples

Alloys, Bentonite, Bones, Carbon Fibres, Catalysts, Cellulose, Cement Clinker, Ceramics, Charcoal, Chemical Products, Clay Minerals, Coal, Coke, Concrete, Compost, Electronic Scrap, Fibres, Glass…

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

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

Jars with O-type sealing for safe operation, pressure tight

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.