The gearbox is a main transmission box with six ropes and a large square bundle. All transmission mechanisms on the machine are realized through the main transmission box. The internal transmission box uses a 5-stage transmission to realize a series of functions such as picking, bundling, hydraulic power output, and sensor monitoring. This product is the American AGCO (Massey Ferguson) 2270XD large square bale series product, which can directly replace imported machines. At present, this machine is trusted by customers in terms of global sales, stability, and reliability. This product has high operating efficiency and powerful functions. The bundling weight can reach more than 500kg, and the large square bundles are convenient for transportation and save transportation costs.