ZL10 type axis-fixed power gear shift transmission box was designed by our company in 2006. It has filled in a blank spot in this aspect of of the domestic industry. It is matched with YJ240 torque converter, suitable for power transmission of ZL08ZL10ZL12 small type loader. It features power gear shift, stepless speed regulation, automatic changing output rotary speed and torque with outside load size so motor always work under maximum power and no falmeout. Also it features big speed reducing ratio. Leave out wheel edge speed reducing of driving bridge so further reduce whole machine cost. The machine has compact structure, simple operation, stable gear changing, reliable use and long life.