注：液力耦合器的作用在于意外断电等情况下能够有效的保护行星减速机传动系统免受过载的冲击，详情请咨询客服。

Note: The role of the hydraulic coupler is to protect the planet reducer transmission system from the impact of the overload effectively during accidents such as power off etc. Please check with Customer Service Department for details.