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Tolsma-Grisnich Samro Stone and Clod Separator

The stone and clod separator can remove stones and clods from a batch of potatoes, onions or other root vegetables with an accuracy of 95%. Because of the advanced sensor technology, a high capacity (12 to 50 tons/hr) can be realised.

This machine has definitely made its mark, and is unique in the potato processing business. It can be deployed as a stand-alone unit or as part of a processing line.


The product to be processed is either fed onto the supply belt of the separator by a transport conveyor belt (TG SAMRO 24 and TG SAMRO 44) or directly via a chute (TG SAMRO 72). From there, the product is transported towards the separation unit.

A magnetic bar is fitted underneath the supply belt, which only polarises the clods and stones. Sensors then control pneumatic rams which eject the polarised clods and stones.

The sensitivity of the sensors to clods and stones can be set separately. The clods and stones are removed by means of a transverse conveyor.
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