Ball Screw is a mechanical transmission device used to convert rotary motion into linear motion. It also has the characteristics of high efficiency, load-bearing capacity and high load-carrying capacity. It is widely used in engineering, manufacturing and automation fields. The following is a detailed introduction to ball screws: 1. Structure and working principle: The ball screw consists of three main parts: screw, bolt and ball. The screw has threads, and the bolt has threaded grooves inside that match the threads of the screw. The balls are mounted in the threaded grooves and they rotate and advance along the screw threads, converting rotational motion into linear motion. 2. Advantages: Ball screws have many advantages over other linear transmission systems, including high efficiency, load-carrying capacity, high load-carrying capacity, low coefficients, long life and low noise. These characteristics are widely used in applications requiring precise control and high-speed motion. 3. Type: There are several different types of ball screws, including precision ball screws, high load ball screws, supported ball screws, etc. All types are designed and optimized for different application needs. 4. Application fields: Ball screws are widely used in popular industrial and scientific fields, such as CNC machine tools, semiconductor manufacturing equipment, automobile manufacturing, aerospace, medical equipment, robotics, precision measuring instruments, 3D printers, etc. 5. Selection considerations: When selecting a ball screw, you need to consider multiple factors, including load rate requirements, speed requirements, accuracy requirements, stroke length, environmental conditions, reliability and budget. Different types and sizes of ball screws are suitable for different applications. 6. Maintenance and upkeep: Ball screws usually require regular lubrication to reduce friction and fatigue. At the same time, regularly checking the status of screws, bolts and balls and looking for looseness will help ensure the normal operation of the system. 7. Limitations and precautions: The performance of ball screws is limited by factors such as ultimate load, maximum load, preload, lateral force, pitch and screw diameter. Therefore, the manufacturer's specifications and recommendations must be followed when designing and using ball screws. In summary, the ball screw is an important linear motion transmission device with a wide range of efficient applications. Ball screws play a key role in automation and manufacturing by converting rotary motion into linear motion with front-loading and high load-carrying capabilities.

How to measure the screw of THK ball screw purchased from the merchant： To measure the size of a ball screw, the following steps are usually required: 1. Prepare measuring tools: You need to use some measuring tools, such as micrometers, calipers, external diameter micrometers, etc. Make sure these measuring tools are accurate and reliable, and calibrate them before use. 2. Choose an appropriate measuring position: According to the size you are concerned about, choose an appropriate position to measure. Generally, measuring the diameter and pitch of the ball screw is the most common. 3. Measure the diameter of the ball screw: Use a micrometer or external diameter micrometer to measure its diameter along the axis of the ball screw. Make sure the ruler is perpendicular to the surface of the ball screw and gently rotate the ruler to obtain accurate measurement results. 4. Measure the pitch of the ball screw: The pitch refers to the distance between adjacent threads on the helix of the ball screw. The pitch of the ball screw can be measured using a caliper or a dedicated pitch measuring tool. Place the caliper between two adjacent threads and make sure that the contact points of the two legs of the caliper are on the high points of the adjacent threads. Then, read the measurement result on the caliper to get the pitch value. 5. Record and verify the measurement results: Record the measurement results and compare them with the specifications of the ball screw. If necessary, you can make multiple measurements to ensure the accuracy of the results. It is important to note that when measuring the ball screw size, you should try to avoid applying excessive force to it to avoid damaging the ball screw. If you are unsure or have difficulty with the measurement method, it is recommended to consult a professional mechanical engineer or use specialized measuring equipment to ensure accuracy.