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Today, let's talk about the main parameters for selecting ball screws. Based on these parameters, we can choose the right product. When choosing a ball screw, the following factors usually need to be considered:   1. Load requirements: Determine the type, size and direction of the load to be carried. Select the appropriate ball screw diameter and screw material according to the load requirements.   2. Accuracy requirements: Determine the required positioning accuracy and repeatability. Higher accuracy requirements usually require the selection of a ball screw with a smaller diameter.   3. Speed ​​requirements: Determine the speed range and maximum speed to be transmitted. Higher speed requirements usually require the selection of a high-rigidity and wear-resistant ball screw.   4. Environmental requirements: Consider factors such as temperature, humidity and corrosiveness of the operating environment. Select suitable screw materials and lubrication methods to meet environmental requirements.   5. Life and reliability: Select the appropriate ball screw according to the life requirements of the application. Generally speaking, larger balls and more wear-resistant materials can increase the service life of the screw.   If you are interested in ball screws, please contact us for more detailed technical advice and selection guidance. Welcome your consultation.

There are several factors to consider when selecting a ball screw to ensure it meets the requirements of the application. Here are the key steps and considerations for selection:   1. Load Requirements Axial load: Determine the maximum axial load that the screw needs to withstand, including static and dynamic loads. Radial load: Some applications may involve radial loads, and you need to ensure that the screw and support bearings can withstand them.   2. Stroke and Speed Stroke length: Determine the effective stroke of the screw based on the application requirements. Operating speed: Determine the maximum operating speed of the screw to avoid vibration or wear due to excessive speed.   3. Accuracy Requirements Positioning accuracy: Select the appropriate accuracy level (C0 to C10, C0 is the highest accuracy) based on the application requirements. Repeatability: Ensure that the repeatability of the screw meets the requirements.   4. Lead and Pitch Lead: The lead affects the speed and resolution of the screw. The larger the lead, the faster the speed, but the resolution is reduced. Pitch: The pitch is related to the lead, and the appropriate pitch needs to be selected based on the speed and accuracy requirements.   5. Screw Diameter Diameter selection: The diameter affects the rigidity and load capacity of the screw. The larger the diameter, the stronger the rigidity and the higher the load capacity.   6. Preload and Clearance Preload: Preload can reduce the clearance, improve rigidity and precision, but increase friction and wear. Clearance: Select the appropriate clearance level according to the application requirements. High-precision applications usually require zero clearance.   7. Support Method Fixed-fixed: Suitable for high rigidity and high precision applications. Fixed-supported: Suitable for medium precision and rigidity requirements. Fixed-free: Suitable for low precision and low rigidity requirements.   8. Lubrication and Sealing Lubrication: Select the appropriate lubrication method (grease or oil lubrication) to extend the service life. Seal: Select the appropriate sealing method according to the working environment to prevent dust and impurities from entering.   9. Environmental Factors Temperature: Consider the temperature range of the working environment and select suitable materials and lubricants. Corrosion: In corrosive environments, choose corrosion-resistant materials or surface treatments.   10. Life Calculation Fatigue Life: Calculate the fatigue life of the screw based on the load and operating conditions to ensure that it meets the application requirements.   11. Motor Matching Torque and Speed: Ensure that the selected screw matches the torque and speed of the drive motor. Inertia Matching: Consider the inertia matching of the system to ensure that the motor can effectively drive the screw.   12. Installation Size Installation Space: Select the appropriate screw size and support method based on the installation space.   13. Cost Budget: Consider cost factors and choose products with high cost performance while meeting technical requirements.   Summary of Selection Steps:   1. Determine the load, stroke and speed requirements.   2. Select the appropriate accuracy grade based on the accuracy requirements.   3. Select the appropriate lead and pitch.   4. Select the screw diameter based on the load and rigidity requirements.   5. Determine the preload and clearance requirements.   6. Select the appropriate support method.   7. Consider lubrication and sealing requirements.   8. Evaluate environmental factors.   9. Calculate fatigue life.   10. Match the motor and screw.   11. Consider installation size and cost.   By following these steps, you can ensure that the ball screw you choose meets your application requirements and has a long service life and good performance.

Ball screw is an efficient transmission element that converts rotary motion into linear motion. It is widely used in CNC machine tools, automation equipment, precision instruments and other fields. Correct selection is essential to ensure equipment performance and extend service life. This article will introduce the key steps and precautions for ball screw selection in detail.   1. Determine the load conditions 1.1 Axial load Axial load is the primary consideration for ball screw selection. It is necessary to calculate the maximum axial force applied to the screw during operation. The calculation formula for axial load is:   1.2 Radial load and bending moment In some applications, ball screws may be subjected to radial loads or bending moments. These loads affect the life and accuracy of the screw, so comprehensive considerations are required when selecting.   2. Determine the stroke and speed 2.1 Stroke The stroke refers to the maximum distance the ball screw needs to move. Determine the stroke according to the range of motion of the equipment and ensure that the length of the selected screw meets the requirements.   2.2 Speed Speed ​​includes maximum moving speed and acceleration. According to the working requirements of the equipment, calculate the required moving speed and acceleration to ensure that the lead and speed of the selected screw can meet the speed requirements.   3. Select the lead and accuracy 3.1 Lead The lead refers to the distance the nut moves for each turn of the screw. The choice of lead directly affects the moving speed and resolution. The larger the lead, the faster the moving speed, but the lower the resolution; the smaller the lead, the higher the resolution, but the slower the moving speed.   3.2 Accuracy Accuracy is an important performance indicator of ball screws, including positioning accuracy and repeat positioning accuracy. According to the accuracy requirements of the equipment, select the appropriate accuracy grade. Common accuracy grades are C0, C1, C2, C3, C5, C7, C10, etc. The smaller the number, the higher the accuracy.   4. Determine the screw diameter and length 4.1 Screw diameter The selection of screw diameter is mainly based on axial load and speed. The larger the diameter, the stronger the load-bearing capacity, but the weight and cost are also higher. Select the appropriate diameter according to the load and speed requirements.   4.2 Screw length The selection of screw length needs to consider the stroke and installation space. Too long length may cause deflection, affecting accuracy and life, so it is necessary to select the appropriate length according to the actual situation.   5. Select nut type The nut types of ball screws include single nut and double nut. Single nut has a simple structure and low cost, but small preload; double nut has large preload and good rigidity, which is suitable for occasions with high precision and high rigidity requirements.   6. Consider lubrication and sealing 6.1 Lubrication Good lubrication can reduce friction and extend the life of the screw. Select the appropriate lubrication method according to the use environment, such as grease lubrication or oil lubrication.   6.2 Sealing The sealing device can prevent dust and impurities from entering the screw and affecting accuracy and life. Select the appropriate sealing method according to the use environment, such as dust ring or sealing ring.         Conclusion The selection of ball screw is a complex process, which requires comprehensive consideration of multiple factors such as load, speed, accuracy, life, etc. Through scientific selection methods, it can ensure that the ball screw performs best in the equipment, prolongs the service life, and improves the reliability of the equipment. We hope this article can provide valuable reference for your ball screw selection. If you have any needs, please contact us for more information.

As the core transmission component in industrial automation and precision equipment, the selection of linear guides is directly related to the accuracy, efficiency, life and stability of the equipment. This article will provide engineers with a systematic selection reference from the aspects of selection principles, key parameters, steps and precautions, combined with actual application scenarios. Analysis of key parameters before selection 1. Load capacity and direction Load type: It is necessary to clarify the static load (vertical and lateral force) and dynamic load (inertia force caused by acceleration) borne by the equipment. Load direction: Linear guides can usually withstand four-way loads, but the raceway layout and slider distribution of the guides need to be selected according to the actual force direction. Torque balance: The center of gravity position and torque need to be calculated in complex applications to avoid deformation or shortened life of the guides due to uneven force. 2. Accuracy level Select ordinary level (±50μm), precision level (±10μm) or ultra-high precision level (±5μm) according to application requirements. For example, semiconductor equipment requires nanometer-level positioning accuracy, and ultra-high precision guides should be selected. 3. Guide type and material Type selection: Rolling guide (ball/roller): low friction, high speed, suitable for high-speed processing and precision positioning. Sliding guide: strong load-bearing capacity, suitable for heavy-load and low-speed scenarios. Material adaptation: Carbon steel: high load-bearing, suitable for heavy industry; Stainless steel: corrosion-resistant, suitable for humid or corrosive environments; Aluminum alloy: lightweight, suitable for medical equipment or light-load scenarios. 4. Environmental adaptability   Environments such as high temperature, humidity, dust or corrosive media require high-temperature resistant coatings, sealed dustproof designs or special lubrication solutions.    Linear guide selection steps 1. Clear requirements Determine the movement speed, acceleration, stroke length and installation space limit of the equipment28. 2. Calculate load and life Calculate the load capacity of the guide according to the load formula (such as static rated load and dynamic rated load), and refer to the life calculation formula provided by the manufacturer (such as rated life L10) to evaluate the maintenance cycle. 3. Select guide specifications Guide width: The wider the width, the stronger the rigidity and load capacity. Common specifications are 15mm to 45mm. Preload level: no preload, light preload, medium preload or heavy preload. The higher the preload, the stronger the rigidity, but the friction resistance increases. 4. Lubrication and maintenance design Choose a centralized lubrication or self-lubricating system, clean dust regularly and add grease to reduce wear.   Typical application scenarios and selection cases 1. CNC machine tools Requirements: high repeatability (±5μm), high rigidity. Selection: Ultra-high precision roller guide, carbon steel, heavy preload design, with closed-loop feedback system. 2. Industrial robot Requirements: flexible movement with multiple degrees of freedom, resistance to frequent start and stop. Selection: low friction ball guide, stainless steel, dustproof sealing structure. 3. Semiconductor equipment Requirements: nano-level positioning, resistance to clean room environment. Selection: air-floating guide or magnetic suspension guide, ultra-high precision grade, dust-free lubrication solution. Common misunderstandings and precautions in selection Ignoring the impact of dynamic load: only considering static load may cause the guide to fail due to inertial force overload during high-speed movement. Excessive pursuit of high precision: Using ultra-high precision guides in non-precision scenarios will increase costs, and ordinary grades can meet the needs. Insufficient environmental adaptation: Failure to select protective design for dust or corrosive environments will greatly shorten the life of the guide. Improper installation and maintenance: Inadequate preload adjustment or lack of lubrication will directly affect motion accuracy and stability. Summary The selection of linear guides needs to comprehensively consider multiple factors such as load, accuracy, environment, cost, etc., and flexibly adjust them according to the actual application scenarios. Through scientific calculation, reasonable matching parameters and regular maintenance, the performance of the guides can be maximized and the life of the equipment can be extended. It is recommended to fully communicate with suppliers and engineers at the beginning of the selection, and use professional tools (such as load calculation software) to optimize the solution to ensure a balance between efficiency and reliability. If you need to know more about specific model parameters or application cases, you can refer to the selection manual or technical documents provided by the manufacturer.