In general, Special Purpose Machines are made to carry out certain kind of specific operations in a large quantity. It was necessary for us to carry out four counterboring operations on the hub of the blade as shown in figure 1 and the blade profile has interference with one of the four holes for fastening and therefore cannot be machined for large production using conventional machines. And thus it is planned to design a special counterboring machine for this typical operation. A new design was proposed by overcoming the limitations of the conventional counterboring operations. An optimized design was presented to carry out multiple (four) counterboring operations in a shorter time period. This paper also explains the design of the gear drives and shafts of the Special Purpose Machine. © Research India Publications.