Gears are in use since long time and for various applications. They are subjected to variable Torque and various rpm to fulfil the need. Being the critical component in any system it is utmost required that they should work as per need without failure. Various design standards are there to guide the design of gear pair but micropitting is still a concern point and very difficult to predict its nature for different application. This research work is carried for mixer gearbox which runs continuously for 12 hours per day at nearly same mean torque. A specific need is considered, and the gear pairs are designed in such a way that it should meet the recommended design standard. ISO:6336-1996 is considered here for designing the gear pair. A detailed analysis id performed to predict the micropitting zone . This research work performs all the critical analysis which is required for the micropitting test and various output of this analysis is considered for getting the significant findings. Contact line has been given utmost attention at various point to highlight the concerned findings. To ensure the accuracy of the KISSsoft software is used to calculate the gear pair, and the lubricant film thickness and Nastran is sued for all other structural analysis.