Via a continuously adjustable vibrating channel, the grain is fed into two perforated drums made of stainless steel which are mounted on a horizontal shaft. Buckets arranged in the drums ensure uniform distribution of the product to be cut. Excess quantities and oversizes are discharged by means of an overflow. The drums are provided with calibrated holes, the diameter of which depends on the type of grain to be cut. The lower half of the rotating drums is surrounded by a precision knife basket without shims.
The grain kernels fall lengthwise through the drum holes and are cross-cut by the knives into small pieces just a few millimetres in size. The cutting angle can be varied by different knife baskets. As a result, coarse, medium or fine groats can be produced. Pinwheels arranged above the supporting frame prevent the holes from clogging.
Advantages of the drum groat cutter:
- Most powerful machine with a small footprint
- Quick change of knives and drums
- Minimum amount of cutting flour
After groating of various products such as oats, wheat, rye or barley, the produced groats are gently aspirated by means of a counter-current coarse sifter. Subsequently, the groats are sorted into different classes using a plansifter or an indented cylinder.