Through the cutting operations of the different metallic materials, large cutting forces are developed, they depend on the material to be processed and on the cutting parameters. During the cutting operation, due to the friction between the tool and the material to be processed, an important amount of heat is released. As the friction between the elements is higher, the heat generated by the attachment can disturb the cutting process. If the temperature from the cutting process is higher than a certain value, the resulting surfaces may have a number of processing defects. In order to reduce the temperature value of the cutting process, different cooling systems have been developed over time that use a wide range of cooling liquids. Cooling liquids have a number of advantages and disadvantages, after the cutting process they have to be discharged and their negative influence on the environment to be minimal. Recent studies have attempted to reduce this amount of coolant by streamlining fluid flows. Systems that use minimal amount of lubricant or coolant are MQL (Minimum Quantity Lubrication) type. These systems have special nozzles so as to obtain the best possible distribution of the coolant in the cutting area, as well as a good mixing if different cooling liquids are used. This paper aims to study the cooling systems for the cutting processes, forms of nozzles to send the fluid in the working area, thereby thermal analysis, from the desire to use an efficient MQL system.