In agriculture, there has recently been a greater need to speed up the process of hay harvesting. Consequently, a gap in the market has appeared for tractor mowers that have an inbuilt collector to transport grass into uniform swaths. This eliminates the need of additional transition with a rake. During this thesis, a first phase of developing such system will be presented. First, a disc mower is introduced, which will carry and power the auger conveyor. For weight reduction purposes, we introduce new nonconventional materials and building techniques. Theoretical model of forces and torque requirements involved during the transport of bulk material will be analyzed to determine an optimal screw pitch. A gearbox for conveyor drive will be developed to use available power from a tractor. After designing the gearbox, a structural analysis of its key components will be done. In the end we get a more detailed solution that can be later used for making the first prototype.