The design calculation process and related process methods for transmission ratio, gear transmission, end mechanic sealing and eccentric short roller bearing used for 180 turbine drill are described.

• 叙述了180涡轮钻具用减速器的传动比,齿轮传动,端面机械密封和偏心短圆柱轴承的设计计算过程和有关处理办法。