This paper presents the most outstanding features of the element’s design for the calculation of an electrocardiograph recorder. Presents the main parameters for selecting a stepping motor, gear transmission, springs and rubber roll it up. The design is corroborated the stepping motor performance in different operating speeds 25 and 50 mm / sec. It shows the final design solution for each part. Experimental results are shown and discussed. It is concluded that the design phase was fulfilled with excellent result.