Planetary Ball Mill PM 100 CM
The Planetary Ball Mill PM 100 CM pulverizes and mixes soft, medium-hard to extremely hard, brittle and fibrous materials. It is used wherever the highest degree of fineness is required. Dry and wet grinding can be carried out.
The PM 100 CM operates in the centrifugal mode, i.e. the speed ratio is 1:-1 (PM 100: 1:-2). This results in a different ball movement which leads to a more gentle grinding of the sample with less abrasion.
The PM 100 CM is a bench-top model with 1 grinding station for grinding jars with a nominal volume of 12 to 500 ml.
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
- extreme speeds for particularly high fineness down to submicron range
- 1 grinding stations
- grinding jars with volumes from 12 ml to 500 ml, in 6 materials
- suitable for long-term trials and continuous use
- reproducible results due to energy and speed control
- direction reversal
- FFCS technology compensates vibrations
- programmable starting time
- power failure backup ensures storage of remaining grinding time
- 1-button operation with graphic display
- 10 combinations of grinding parameters can be stored
- measurement of input energy helps to optimize grinding parameters
- automatic grinding chamber ventilation for cooling the grinding jars
- 2-year warranty, CE-conforming
Features
| Applications | pulverizing, mixing, homogenizing, colloidal milling |
| Field of application | agriculture, biology, chemistry / plastics, construction materials, engineering / electronics, environment, glass / ceramics, medicine / pharmaceuticals, mineralogy / metallurgy |
| 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 |
| Type of grinding jars | "comfort" |
| Material of grinding tools | hardened steel, stainless steel, tungsten carbide, agate, sintered aluminium oxide, 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 |
| Parameter combinations that can be stored | 10 |
| Measurement of input energy possible | yes |
| Interface | RS 232 / RS 485 |
| Drive | asynchron motor with frequency converter |
| Drive power | 750 W |
| Protection code | IP 30 |
| Power consumption | ~ 1250W (VA) |
| W x H x D closed | 630 x 468 x 415 mm |
| Net weight | ~ 86 kg |
| Workplace related emission value | LpAeq < 85 dB(A) |
| Sound power level | LWA 97 dB(A) |
| *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 centrifugal forces produced by the rotation force the grinding balls and the sample against the inner wall of the grinding jars where size reduction takes place primarily by pressure and friction.
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.
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 centrifugal forces produced by the rotation force the grinding balls and the sample against the inner wall of the grinding jars where size reduction takes place primarily by pressure and friction.
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.
