XL-50系列变速箱具有承载能力强，专项制动可靠等优点，且结构合理，操作简单，维修方便，适用于中小型联合收割机。 XL-50Series gearbox has advantages of well loading capacity and steering and braking, it also has reasonable structure, simple operation, convenient maintenance, suitable for small and medium sized combine harvester.