Monday, 20 November 2017


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Brabender is launching a newly constructed mill for sample preparation in the lab, Break Mill SM 4, which is suited for processing wide range of raw materials into ground product. 

All types of grains can reliably be ground to the desired fineness, Brabender explains. As a multifunctional laboratory mill, the new SM 4 is also ready for a range of different applications. For example, "original grains" such as spelt, emmer or einkorn wheat, pseudo-cereals, pulses, pasta products, herbs and spices, coffee beans or nuts can also be ground.

Aside from classic grains, practical tests have shown that coarse materials (such as corn) or very thin raw material parts (hulls or chaff) can be ground without any problems. Depending on the milling gap setting, the Break Mill SM 4 can be used to achieve differentiated fineness profiles, with varying particle size proportions, the company announces.

In an application manual, the Brabender application lab summarizes many of the sieving analyses carried out with the Break Mill SM 4 (with different mesh sizes) for various materials:  

  • Grains: wheats, rye, corn, brown rice
  • Pseudo-cereals: amaranth, buckwheat, white quinoa
  • Pulses: green peas, green lentils, white beans, kidney beans
  • Other foodstuffs: pasta/noodles, pepper, coffee beans

Technology with safety tuning and fine adjustment

The grinder works in a closed system, which is shielded according to all standard (engineering) norms to achieve safety in production processes. In the event of any kind of conceivable operating error, a safety switch switches off the grinder’s motor, making it CE-compliant and ensuring it complies with all current directives. The Break Mill SM 4 has been built so that it is inherently stable, to guarantee a firm footing. Vibrations are also deadened by its plastic feet.

As well as the latest safety features, the mill’s grinding assembly also offers five process advantages that are indispensable for precise sample processing in the lab:

  • fluid adjustment of milling gap/degree of fineness
  • reproducible milling at the desired degree of fineness
  • heating of the ground product is minimized
  • loss of moisture in the ground product is minimized
  • closed system without loss of product

The mill’s inner workings comprise two grinding blocks: the upper, stationary block works with three reversible cutting plates. The lower block is fitted with four further indexable cutting inserts that rotate in opposite direction to one another.

The gap between the fixed and rotating reversible cutting plates is adjustable, and is set using the adjustment screw with scaling for many different fineness grades. The material to be ground is fed into the hopper at the top of the mill; from there, it falls into the running grinding assembly. The reversible cutting plates’ sharp contrarotating 90° cutting edges slash at the material until it passes through the vernier’s adjustable gap, before centrifugal force throws it out of the grinding assembly into a discharge pipe. A collecting vessel can be precisely fitted to the discharge pipe, so that the ground product is directly caught, without any loss.

The grinding assembly’s special construction reliably prevents the ground product from heating up, preventing loss of moisture in the milling samples. “The Brabender Break Mill SM 4 is ideally suitable for preparing samples for moisture analysis, determining protein and fat content or gluten quality with the Brabender GlutoPeak,” according to the company. 

Related articles: 

Brabender Presents New Method of Flour Analysis  

Brabender Sets New Divisional Structure

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