The ball screw includes cage or recirculating ball elements to achieve linear motion. They operate at 90% lower efficiency, have a predictable life, and generate less heat even during long periods of use. They are ideal for 100% duty cycle applications and high speed applications. The tradeoff is the ball screw actuator. If used for vertical applications, braking is required. The recycle ball also produces a lot of audible noise. Ball screw actuators can be preloaded to provide the responsiveness required for the application. In order to reduce the wear of the screw and prolong the service life of the screw, it is very necessary to make reasonable lubrication protection for the screw.

滚珠丝杆的润滑可选润滑脂或润滑油方式，而润滑方法大致分为手动润滑与自动强制润滑两种，可依照系统的运行速度，使用环境等需求做适合的选择有的环境可以使用钼系等固体材料作为润滑剂。

Ball screw can be lubricated by grease or lubricating oil, and the lubrication method can be roughly divided into manual lubrication and automatic forced lubrication. The suitable choice can be made according to the running speed of the system and the use environment. Some environments can use solid materials such as molybdenum series as lubricating agent.

通过油润滑，应用条件足以形成弹性流体动力学（EHD）润滑膜也是关重要的。该薄膜将承载滚珠与滚道分开，防止金属与金属接触。确定润滑膜是否有三个主要条件：润滑剂的粘度，螺杆的速度以及滚珠和滚道之间的压力。由于速度对EHD润滑的影响，低速应用通常需要润滑脂，在边界润滑（主要是金属与金属的接触）或混合润滑（金属与金属的接触和组合）的条件下提供更好的润滑支持。

Through oil lubrication, it is also essential that the application conditions are sufficient to form an EHD lubricating film. The film separates the bearing ball from the raceway to prevent metal to metal contact. There are three main conditions to determine whether the lubricating film is formed: the viscosity of the lubricant, the speed of the screw and the pressure between the ball and the raceway. Due to the influence of speed on EHD lubrication, grease is usually required for low-speed applications to provide better lubrication support under boundary lubrication (mainly metal to metal contact) or mixed lubrication (metal to metal contact and combination).