A family of feeding and sorting systems complementary to the vibratory feeders. Through the principle of reciprocating motion of plates, Brovind step feeders allows lifting and dosing of products in predefined quantities and cadence, so to avoid the recycling of pieces in the bowl. Provided with static or motorized hoppers, so to obtain the desired loading capacity, the feeders are usually coupled with linear vibratory feeders to sort the pieces and convey them to the desired exit point