High Energy Ball Mill

High Energy Ball Mill

  • Material feed size: < 5 mm
  • Final fineness: < 80 nm
  • Speed at 60 Hz: 300 - 2000 min-1

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The Emax is an entirely new type of ball mill for high energy milling.

The unique combination of high friction and impact results in extremely fine particles within the shortest amount of time.

The high energy input is a result of an unrivaled speed of 2000 min-1 and the optimized jar design. Thanks to the revolutionary cooling system with water, the high energy input is effectively used for the grinding process without overheating the sample. Due to the special grinding jar geometry, the sample is thoroughly mixed which results in a narrow particle size distribution. 

Unlike other high energy ball mills, the Emax is capable of continuous grinding operation without interruptions for cooling down. This dramatically reduces the grinding time. The high energy input in combination with the unique cooling system provides perfect conditions for effective mechanical alloying or grinding down to the nanometer range. 

A wealth of safety features such as the integrated safety closure of the grinding jar, temperature control with automatic start/stop system, and integrated imbalance controls make operation of the bench-top mill Emax very user-friendly.

Application Examples

alloys, bones, carbon fibres, catalysts, cellulose, cement clinker, ceramics, chemical products, clay minerals, coal, coke, concrete, fibres, glass, gypsum, iron ore, kaolin, limestone, metal oxides, minerals, ores, paper, pigments, plant materials, polymers, quartz, semi-precious stones, sewage sludge, slag, soils, tea, tobacco, waste samples, wood, ... 

Product Advantages

  • faster and finer grinding than any other ball mill
  • speed of 2000 min-1 allow for ultra-fast pulverization of the sample
  • water cooling permits continuous operation without cool down breaks
  • temperature-controlled grinding
  • narrow particle size distribution thanks to special jar design which improves mixing of the sample
  • patented drive concept
  • easy operation via touch screen, 10 SOPs storable
  • operation with 2 grinding jars
  • easy installation of grinding jars
  • jars with integrated safety closure
  • range of jar materials allow for contamination free grinding

Function Principle

The novel size reduction mechanism of the Emax unites the advantages of different mill types: high-frequency impact (mixer mill),intensive friction (vibratory disc mill) and controlled circular jar movements (planetary ball mill) allow for unrivaled grinding performance. This unique combination is generated by the oval shape and the movement of the grinding jars. The grinding jar supports are mounted on two discs respectively which turn in the same direction. As a result, the jars move on a circular course without changing their orientation. 

The interplay of jar geometry and movement causes strong friction between grinding balls, sample material and jar walls as well as a rapid acceleration which lets the balls impact with great force on the sample at the rounded ends of the jars. This significantly improves the mixing of the particles resulting in smaller grind sizes and a narrower particle size distribution than has been possible to achieve in ball mills so far.

Applicationsnano grinding, size reduction, homogenizing, mechanical alloying, colloidal milling, high energy comminution
Field of applicationagriculture, biology, Chemistry, construction materials, engineering / electronics, environment / recycling, geology / metallurgy, glass / ceramics, medicine / pharmaceuticals
Feed materialmedium-hard, hard, brittle, fibrous - dry or wet
Size reduction principleimpact, friction
Material feed size*< 5 mm
Final fineness*< 80 nm
Batch size / feed quantity*max. 2 x 45 ml
Speed at 50 Hz (60 Hz)300 - 2000 min-1
Coolingcontrolled integrated water cooling / option: external chiller
Temperature controlyes (min and max temperature may be defined)
No. of grinding stations2
Type of grinding jarswith integrated safety closure devices
Material of grinding toolsstainless steel, tungsten carbide, zirconium oxide
Grinding jar sizes50 ml / 125 ml
Setting of grinding time00:01:00 to 99:59:59
Interval operationyes, with optional direction reversal
Interval time00:01:00 to 99:59:59
Pause time00:01:00 to 99:59:59
Storable SOPs10
InterfaceUSB / LAN ( RJ45)
Drive3-phase asynchronous motor with frequency converter
Drive power2600 W
Electrical supply datadifferent voltages
Power connection1-phase
Protection codeIP 30
Power consumption~ 3100W (VA)
W x H x D closed625 x 525 x 645 mm
Net weight~ 120 kg
Patent / Utility patentInclined Grinding bowls (US 8,042,754 B2)