How many types of ball screws are there?

There are generally two main types of ball screws:

1. Ground Ball Screws: These ball screws are produced through grinding processes that ensure high precision and accuracy. They offer low friction, high efficiency, and excellent positioning accuracy. Ground ball screws are commonly used in applications that require high performance and precision, such as CNC machines, robotics, and aerospace equipment.

2. Rolled Ball Screws: Rolled ball screws are manufactured by pressing or rolling the thread profile onto the screw shaft. They are generally less expensive than ground ball screws but offer slightly lower accuracy and efficiency. Rolled ball screws are often used in applications that require lower precision, such as in certain industrial machinery and automation systems.

There may be variations and special designs within these two main types of ball screws, depending on specific application requirements.