Force and strength analysis about the floating plate output mechanism are carried out, and study on life of spin arm bearings is also developed. Comparative analysis with the floating plate type and the pin-holes type are also presented. 对二次包络摆线行星传动装置采用的新型浮动盘式输出机构进行了受力分析、强度校核及转臂轴承寿命计算,并与销轴式输出机构进行了对比分析。