Are there any resources provided to supplement the English teaching on ball screws?

滚珠丝杠滑台是一种机械传动元件，通常用于机械设备中的线性运动传动系统中，它由滚珠丝杠、导轨和支撑组成。滚珠丝杠滑台可以提供高效的线性运动传动和精确定位，广泛应用于机床、自动化设备、机器人等行业。

How long is the duration of the English lesson on ball screws?

Introduction to Ball Screw A ball screw is a type of mechanical linear actuator that converts rotary motion into linear motion with minimal friction. It consists of a threaded shaft and a nut that contains a set of ball bearings that roll in the grooves of the shaft and nut. The rolling motion of the balls reduces the friction and allows for smooth and precise movement. Advantages of Ball Screw Ball screws have several advantages over other types of linear motion systems. They have high precision and repeatability, which makes them ideal for applications that require accurate positioning and motion control. They also have high efficiency and can convert a large amount of rotary motion into linear motion with minimal energy loss. Applications of Ball Screw Ball screws are used in a wide range of applications, including CNC machines, robotics, aircraft and aerospace equipment, medical equipment, and semiconductor manufacturing equipment. They are also used in automotive steering systems, machine tools, and injection molding machines. Conclusion Ball screws are an essential component in many modern industrial systems. Their high precision, efficiency, and durability make them an ideal choice for applications that require accurate and reliable linear motion.