The objective of the present work is to analyze the case of Kaizen projects carried out in an assembly line and warehouse of a company dedicated to the manufacture of electric motors. The projects lasted 9 weeks and its main  purpose was the generation of improvement proposals to achieve greater productivity in the organization. The Kaizen methodology was followed to analyze the current state, lean tools were used to improve the work areas, supermarkets of raw materials and components were established through a real, critical and systematic analysis of the production line. Significant benefits were generated for the organization, such as reduction in material delivery times in points of use from 90 minutes to 40 minutes, reduction of delivery distances traveled from 864 mts to 209 mts, reduction loss for shafts handling from 2055 USD per month to none, 100% efficiency accomplish with customer request, improvement of 5´S metrics from 2.25 to 4.15, important reduction of downtime and waste. From this experience it is concluded that the methodology employed had great impact in the organization.