Peelers or peeling machines are equipment that performs preliminary cleaning of products. They serve to remove peels, shells, or husks from inputs. Fruits, vegetables, root crops, grains, nuts, etc. are cleaned to a high degree of quality, so that they are then ready for the next stage of processing or for sale. These plants significantly save time and labor compared to manual methods. Simultaneously with the cleaning they can also wash the inputs, and at the end dry them. For processing fruits and vegetables, abrasive or blade systems can be used. For grains, nuts, and seeds, usually cleaning in a stream of air is used. These devices are equipped with containers for collecting any waste and water removed from the product.

Skinning machines are a type of equipment used in the food industry. They are used for removing skin from livestock large and small, as well as for cutting it and slicing bacon. They allow you to precisely select the thickness of the cut so that the skin (and, if needed, fat) is removed precisely and cleanly, thereby minimizing waste. Certain of these plants work also as slicers, they can slice the input materials for further processing or pre-sale treatment. Dedicated devices exist for processing poultry, fish, and calamari.