Trapezoidal lead screw is a common mechanical transmission element, named because of its trapezoidal thread cross section. In 3D printers, trapezoidal lead screw plays a key role in converting rotational motion into linear motion. Compared with ordinary threads, trapezoidal threads have higher load-bearing capacity and better self-locking characteristics, which makes it particularly suitable for applications that require precise positioning and certain axial loads. The working principle of the trapezoidal lead screw is based on the basic physical principle of spiral transmission: when the lead screw rotates, the nut moves along the axial direction of the lead screw, and the moving distance is proportional to the lead of the thread and the number of rotations. This precise linear motion conversion mechanism is one of the foundations for 3D printers to achieve high-precision printing. Advantages of trapezoidal lead screw in 3D printers In 3D printing technology, trapezoidal lead screw has many significant advantages over other transmission methods: High-precision positioning capability: The trapezoidal lead screw can provide higher positioning accuracy, with a typical value of ±0.1mm or higher, which is crucial to printing quality. Good self-locking performance: The design of the trapezoidal thread allows it to naturally maintain its position when not driven, reducing the risk of the Z axis falling when the power is off or the motor is not working. Higher load capacity: Compared with belt drive or ordinary threaded rod, trapezoidal screw can withstand greater axial loads and is suitable for supporting the weight of the printing platform and print head. Smooth motion characteristics: Trapezoidal screw drive reduces vibration and jump, which helps to improve the quality of the printed surface. High cost performance: Compared with ball screw, trapezoidal screw is lower in cost and can meet the accuracy requirements of most consumer-grade 3D printers. Typical applications of trapezoidal screw in 3D printers In the structure of 3D printers, trapezoidal screw is mainly used in the following key parts: Z-axis lifting system: Most FDM/FFF 3D printers use trapezoidal screws to control the precise movement of the printing platform or print head in the Z-axis direction. Since the Z-axis needs to be highly stable and bear a certain load, the trapezoidal screw becomes an ideal choice. Some specially designed X/Y axes: Although most modern 3D printers use belt drives on the X/Y axes to achieve higher speeds, some models that focus on accuracy rather than speed also use trapezoidal screws on these axes. Extrusion mechanism: In some direct-drive extruders, trapezoidal screws can be used to precisely control the advancement of filaments. Technical parameter selection of trapezoidal screws When choosing a trapezoidal screw for a 3D printer, you need to consider the following key parameters: Pitch: refers to the distance the nut moves when the screw rotates one circle. Common ones are 2mm, 4mm, 8mm, etc. Smaller pitches provide higher resolution but slower speeds. Diameter: Usually 6mm, 8mm, 10mm or 12mm. Larger diameters provide better stiffness and load capacity. Thread type: standard trapezoidal thread (such as Tr8×2) or specially designed thread. Material: Usually carbon steel or stainless steel, stainless steel is more corrosion-resistant but more expensive. Accuracy level: 3D printers usually require C7 or higher precision screws. Length: Select an appropriate length based on the printer's Z-axis travel requirements, generally slightly larger than the maximum printing height. Installation and maintenance of trapezoidal lead screw Proper installation and maintenance are essential to ensure the performance and life of trapezoidal lead screw: Installation points: Ensure that the lead screw is parallel to the guide system (such as linear guide) Use appropriate support bearings to reduce radial loads Fix both ends firmly but not too tight to avoid stress Use couplings to connect the motor and the lead screw to compensate for minor misalignments Maintenance recommendations: Clean the lead screw regularly to remove dust and printing residues Proper lubrication (use special grease or lubricating oil) Check the wear of the nut and replace the worn parts in time Avoid deformation caused by over-tightening Comparison of trapezoidal lead screw and ball screw For most consumer-grade 3D printers, trapezoidal lead screws provide a good price-performance balance. Industrial or high-end printers may prefer to use ball screws for higher accuracy and speed. Future development trend of trapezoidal lead screw As 3D printing technology continues to develop, trapezoidal lead screws are also continuously improving: Material innovation: The application of new composite materials and high-performance alloys improves the wear resistance and life of the lead screw. Manufacturing process advancement: Precision grinding and special coating technologies improve the accuracy and surface quality of the lead screw. Integrated design: Some new designs integrate the lead screw with guide rails or other functions to simplify installation and improve system rigidity. Intelligent monitoring: Built-in sensors monitor the status of the lead screw and predict maintenance needs. Conclusion As a key transmission component in 3D printers, the trapezoidal lead screw has a direct impact on printing accuracy and quality. Understanding its working principle, selection criteria and maintenance requirements can help 3D printer users and designers optimize machine performance. With the advancement of material science and manufacturing technology, the trapezoidal lead screw will continue to play an important role in the field of 3D printing, balancing performance and cost, and promoting the development of 3D printing technology to a wider range of applications.

In the field of modern industrial automation and precision machinery, arm robots have become an indispensable and important equipment. In this type of high-precision mechanical system, ball screws, as key transmission components, play a vital role. This article will explore in depth the application of ball screws in arm robots and their technical characteristics. Ball screws are a precision mechanical element that converts rotational motion into linear motion. They are composed of screws, nuts, balls, and return systems. Compared with traditional sliding screws, their biggest feature is to reduce friction through the rolling contact of the balls, thereby achieving high efficiency (usually up to 90% or more) and high-precision motion transmission. The application advantages of ball screws in arm robots are as follows: High-precision positioning: Modern industrial-grade arm robots usually need to achieve micron-level positioning accuracy. The small backlash and precise lead of ball screws make them an ideal choice. High load capacity: The large contact area of the balls disperses stress, allowing arm robots to handle heavier workpieces without affecting accuracy. Long life and low maintenance: Rolling friction greatly reduces wear, extends service life and reduces maintenance frequency. High speed response: Low friction characteristics allow faster acceleration and improve the efficiency of arm robots. Despite the obvious advantages, ball screws still face some challenges in arm robot applications: Thermal deformation problems: Heat generated by high-speed movement may lead to reduced accuracy. Modern solutions include the use of cooling systems and low thermal expansion materials. Miniaturization needs: With the development of collaborative robots, the demand for compact ball screws is growing, which has promoted the development of miniature ball screw technology. Intelligent integration: The new generation of ball screws has begun to integrate sensors to monitor load, temperature and wear status in real time to achieve predictive maintenance. With the advancement of Industry 4.0 and smart manufacturing, arm robots have put forward higher requirements for ball screws: Higher precision: The demand for nanometer-level positioning accuracy is driving the development of ultra-precision ball screws. Intelligence: "Smart screws" with built-in sensors will become standard. New material applications: The application of ceramic balls and composite materials will further improve performance. Green manufacturing: more environmentally friendly production processes and recyclable designs are valued. As the "precision muscle" of arm robots, the technological progress of ball screws directly determines the performance ceiling of robots. With the development of material science, manufacturing processes and intelligent control technology, ball screws will continue to push arm robots towards higher precision, higher efficiency and more intelligence, providing more powerful automation solutions for modern manufacturing. If you are interested, please contact us, we have the most professional and standardized team technical support.

Regular inspection and adjustment of the gap between the ball screw and the support seat is an important measure to ensure the accuracy, stability and life of mechanical equipment. The following are detailed steps and precautions: 1. Inspection steps Manual inspection Turn off the power of the equipment, rotate the screw manually, and feel whether there is abnormal resistance or looseness. Push and pull the screw axially to check whether there is obvious gap (usually the allowable axial clearance should be less than 0.01-0.05mm, refer to the equipment manual for details). Dial indicator measurement Fix the dial indicator near the support seat and the probe against the end face of the screw. Push and pull the screw axially and record the change in the dial indicator reading, which is the axial gap. If the gap exceeds the standard (such as exceeding the manufacturer's recommended value), it needs to be adjusted. Operation status inspection Run the equipment at a low speed to observe whether there is vibration, abnormal noise or positioning deviation. Use a vibration analyzer or stethoscope to assist in diagnosing abnormalities. 2. Adjustment method Adjust the preload of the support seat Angular contact bearing support seat: adjust the preload through the locking nut (refer to the manufacturer's torque value). Loosen the locking nut and tighten it gradually with a torque wrench, while turning the screw to ensure smoothness. Remeasure the gap after pre-tightening until it reaches the standard. Deep groove ball bearing support seat: If the gap is too large, you may need to replace the bearing or add a gasket. Replace worn parts If the gap is still too large after adjustment, check whether the bearing, screw nut or support seat is worn. Replace worn bearings or screw nuts (note to replace angular contact bearings in pairs). Calibrate parallelism and coaxiality Use a micrometer to check the parallelism of the screw and the guide rail (generally ≤0.02mm/m). If the mounting surface of the support seat is deformed, it needs to be reprocessed or corrected with a gasket. 3. Maintenance cycle and precautions Cycle recommendation Ordinary equipment: Check once every 3-6 months. High-precision/high-frequency equipment: monthly inspection or by running hours (such as 500 hours). New equipment needs to be re-tightened after 1 month of first operation. Key points Use the original factory specified grease to avoid mixing different greases. After adjustment, it is necessary to run the test without load, and then gradually load and verify. Record the data of each inspection to track the wear trend. Safety tips Be sure to turn off the power and release the system pressure before adjustment. Avoid excessive pre-tightening, otherwise it will cause the bearing to heat up and reduce its life. 4. Tools and consumables Necessary tools: dial indicator, torque wrench, feeler gauge, micrometer. Consumables: grease, seals, spare bearings (models must match). Through systematic inspection and adjustment, the transmission error can be effectively reduced and the service life of the ball screw system can be extended. If the problem is complex (such as screw bending), it is recommended to contact professional maintenance personnel. If you have any questions, please contact us. Any ball screw problem can be solved.

The spline screw in the SCARA (Selective Compliance Assembly Robot Arm) four-axis robot is a key transmission component, mainly used to achieve high-precision linear motion and rotational motion (θ axis, usually the fourth axis) of the robot in the vertical direction (Z axis). The following is its detailed use and description: 1. Main use Z-axis lifting motion: The spline screw converts the rotational motion of the motor into precise linear motion, driving the end effector of the robot arm (such as grippers, suction cups, etc.) to move up and down in the vertical direction. Rotational motion transmission: The spline structure transmits torque at the same time to achieve the rotation of the fourth axis (such as the rotation of the end tool), meeting the needs of assembly, screw tightening and other operations. High precision and rigidity: Suitable for scenarios that require repeatable positioning accuracy (such as ±0.01mm) and resistance to lateral forces (such as precision assembly and handling). Synchronous motion: When the Z-axis lifting and rotational motions work together (such as inserting parts), the spline screw can ensure the synchronization of the two motions. 2. Structural description Spline part: The external spline cooperates with the internal spline sleeve to transmit the rotational torque (θ axis), while allowing the shaft to slide up and down in the spline sleeve (Z axis), realizing the combination of rotation and linear motion. Screw part: The precision ball screw converts the rotation of the servo motor into linear motion, providing high-precision, low-friction lifting drive. Integrated design: The spline and the screw are usually integrated on the same shaft, saving space and simplifying the transmission chain. 3. Core features High load capacity: The spline structure disperses torque and radial force, suitable for cantilever loads (such as horizontally extended robotic arms). Low backlash: The preloaded ball screw and spline cooperate to reduce the motion gap and improve the repeatability. Compactness: The integrated design reduces external transmission components and adapts to the narrow joint space of the SCARA robot. Durability: Hardened steel or coating technology is used, which is wear-resistant and has a long life (such as more than 20,000 hours). 4. Typical application scenarios Electronic assembly: PCB board plug-in, chip handling (requires Z-axis precision lifting + rotation alignment). Automated production line: screwing, gluing (rotation and pressing action). Medical equipment: reagent packaging, test tube operation (dust-free, low vibration requirements). 5. Comparison with other transmission methods Characteristics Spline screw Timing belt + guide rod Linear motor Accuracy High (μm grade) Medium (affected by belt elasticity) Very high Load capacity High (suitable for heavy loads) Medium-low Medium Cost Medium Low High Maintenance complexity Regular lubrication Belt replacement Almost maintenance-free 6. Selection considerations Accuracy level: Select C3/C5 screw according to the task. Dust-proof design: Sealed spline sleeve prevents dust from entering (such as IP54 protection). Lubrication method: Automatic lubrication or maintenance-free grease design. Through the composite function of the spline screw, the SCARA robot can efficiently complete complex movements with limited degrees of freedom, becoming the mainstream choice in 3C, automotive electronics and other fields.

My suggestion is: if you want a longer service life, it is recommended to repurchase. If you want to repair it, the shipping cost is also an expense. Consider it comprehensively according to the degree of damage. Ball screw is a common mechanical transmission device used to convert rotary motion into linear motion. However, long-term use or improper maintenance may cause the ball screw to be damaged or malfunction. When there is a problem with the ball screw, we face an important decision: should we repair the ball screw or buy a new one? Option 1: Repair the ball screw 1. Economical: Repairing a ball screw is usually cheaper than buying a new one. If the ball screw has only experienced minor failures or wear, repair may be a more economical and reasonable option. Repair may involve replacing damaged parts or making adjustments and lubrication. 2. Time benefit: Repairing a ball screw usually takes less time than buying a new one. Buying a new ball screw involves selecting the right model, waiting for delivery and installation, while repairs can usually solve the problem faster. 3. Environmental considerations: Repairing a ball screw helps reduce waste generation and is in line with the concept of sustainable development. If the problem can be solved by repair, then repurchasing a new ball screw may be a waste of resources. Option 2: Repurchasing a ball screw 1. Severe damage: If the ball screw has suffered serious damage, including breakage or severe wear of key components, repairs may not be able to effectively fix the problem. In this case, purchasing a new ball screw is a more reliable option to ensure the normal operation of the system. 2. Technology update: Ball screw technology is constantly evolving, and a new generation of ball screws may have higher performance and longer service life. Repurchasing a new ball screw can upgrade and improve the system and improve overall performance. 3. Frequent failures: If the ball screw repeatedly fails or works unstably, repairs may only be a temporary solution. Repurchasing a reliable ball screw can avoid frequent repairs and downtime, and improve production efficiency and reliability. Conclusion: When facing a ball screw failure, we can choose whether to repair the ball screw or repurchase a new one according to the actual situation. If the problem is minor and the repair cost is low, repair may be a more cost-effective option. However, for severe damage, frequent failures, or the pursuit of higher performance, repurchasing the ball screw may be a more reliable solution. No matter which method you choose, consulting Nanjing Shuntai is the right choice. Welcome to consult our website https://www.nanjingshuntai.com for more information.

Preload adjustment of ball screws is a key step to ensure their high precision, high rigidity and long life. The role of preload is to eliminate the gap between the ball and the raceway, reduce the reverse clearance (backlash), and improve the axial rigidity and vibration resistance of the system. However, excessive preload may cause heating, increased wear and even jamming, so the adjustment must strictly follow the technical specifications. The following are the detailed methods and precautions for preload adjustment: 1. Purpose of preload adjustment Eliminate axial clearance: Ensure that the screw has no empty stroke when moving forward and backward. Improve rigidity: Enhance the system's ability to resist deformation due to load changes. Extend life: Reasonable preload can evenly load the ball and avoid local wear. Reduce vibration and noise: Reduce impact and abnormal noise caused by clearance. 2. Main methods of preload adjustment a. Double nut preload method (most common) Principle: Apply opposite axial forces through two nuts to squeeze the ball into contact with the raceway. Steps: Install double nuts: Install two ball nuts in reverse on the same screw shaft. Apply preload: rotate the two nuts to bring them closer together, compress the elastic element in the middle (such as a disc spring) or directly lock them through the thread. Adjustment method: Torque control method: tighten the nut to the specified torque value with a torque wrench (refer to the manufacturer's data). Displacement control method: measure the distance between the two nuts and adjust to the preset compression amount (usually 1%~3% of the lead). Lock the nut: use a locking washer or thread glue to fix the adjusted position. b. Shim adjustment method Applicable scenarios: single nut structure or occasions where the preload needs to be accurately adjusted. Steps: Add a shim between the nut end face and the mounting seat. Change the axial relative position of the nut and the screw by increasing or decreasing the thickness of the shim, and compress the ball and raceway. The preload needs to be tested repeatedly until the target value is reached. c. Spacer adjustment method Principle: add a spacer (sleeve) of a specific length between the double nuts, and control the preload by changing the length of the spacer. Advantages: High preload accuracy, suitable for equipment with high rigidity requirements (such as CNC machine tools). Steps: Measure the original spacing between the two nuts. Calculate the required spacer length based on the preload amount (usually the required compression amount = spacer length - original spacing). Install the spacer and lock the nut. d. Variable lead method (preload type ball screw) Principle: The manufacturer changes the lead of the ball circulation path to make the ball preload in the nut. Features: Users do not need to adjust, and can obtain standard preload by direct installation (need to select according to the load). 3. Key parameters for preload adjustment Preload level: usually divided into light preload (C0/C1), medium preload (C2/C3), heavy preload (C5), which needs to be selected according to the load and accuracy requirements. Preload amount calculation: Preload amount ≈ 0.05~0.1 times the elastic deformation corresponding to the rated dynamic load. Empirical formula: preload = (5%~10%) × lead (refer to the manufacturer's manual). Preload detection indicators: Axial rigidity: The displacement after applying external force must be less than the allowable value (such as 1μm/N). Reverse clearance: measured with a micrometer, the target value is usually ≤5μm. IV. Detection and verification after adjustment Torque test: Manually rotate the screw to feel whether the resistance is uniform and avoid local jamming. Use a torque meter to measure the driving torque and compare it with the manufacturer's recommended range (re-adjustment is required if it exceeds the limit). Reverse clearance detection: Fix the micrometer contact to the nut, move the screw in the forward and reverse directions, and record the displacement difference. Temperature monitoring: Run without load for 30 minutes to check whether the temperature rise is normal (generally ≤40℃). V. Precautions Avoid over-preloading: Excessive preloading will cause a sharp increase in friction heat, accelerated wear and even sintering. Lubrication management: After preload adjustment, it is necessary to add an appropriate amount of grease. It is recommended to use high-speed and high-load lubricants. Environmental adaptability: The preload amount needs to be re-checked in high or low temperature environments (affected by the thermal expansion coefficient of the material). Regular maintenance: Check the preload status every 300-500 hours of operation and readjust it if necessary. VI. Common problems and solutions Problem 1: Large running resistance after preload adjustment Cause: Excessive preload or insufficient lubrication. Solution: Reduce the thickness of the gasket or the length of the spacer sleeve and increase lubrication. Problem 2: The reverse clearance still exceeds the standard Cause: The nut is worn or the screw shaft is bent. Solution: Replace the nut, straighten the screw or replace a new screw. Problem 3: Abnormal noise and vibration Cause: Uneven preload or broken balls. Solution: Readjust the preload and check the ball circulation system. Through the above understanding of ball screw preload, if you want to learn more, please contact us, we are online 24 hours a day to serve you.

A ball screw is a mechanical element commonly used to transmit motion and force. It consists of a threaded shaft and a nut, and the balls are used to transmit force and motion through the threads between the threaded shaft and the nut. The balls play the role of transmitting force, reducing friction and side motion, and improving transmission efficiency and precision. The identification criteria of ball screws can be described by the following aspects. The first is the pitch, which indicates the distance the ball screw moves forward per rotation. The pitch determines the speed and sensitivity of the ball screw, usually expressed in millimeters/turn or inches/turn. The second is the load capacity. The load capacity of a ball screw describes the maximum load it can withstand, usually in Newtons (N) or pounds-force (lbf). The load capacity directly affects the scope of use and application of the ball screw. Different working environments and requirements require the selection of appropriate load capacity. The third is the accuracy level. The accuracy level refers to the accuracy of the movement and transmission of the ball screw. Commonly used accuracy levels include C0, C3, C5, etc. The accuracy grade determines the positioning accuracy and repeatability of the ball screw, which is very important for applications that require high-precision position control. In addition, the diameter, length, material, etc. of the ball screw are also important contents in the identification description. The diameter and length affect the overall size and installation method of the ball screw, while the material determines the strength and durability of the ball screw. Nanjing Shuntai Precision Ball Screw Pair is standardized into 8 types of nuts as shown in the figure. In addition, in order to meet customer requirements, we can make non-standardized nuts with special shapes (such as square, axis intersection, etc.), special properties (such as high temperature resistance, corrosion resistance, etc.) and unconventional formats (such as extension, heavy load). If you have any needs, please consult.

Trapezoidal screws are widely used in printing. It is a screw with a threaded structure, usually used in conjunction with a nut. The thread of the trapezoidal screw usually adopts a trapezoidal cross-section, hence the name trapezoidal screw. In printing, the trapezoidal screw is used as a transmission element for axial motion to control the up and down movement of the print head and the lifting and lowering of the printing platform. Usually, the trapezoidal screw is matched with the nut, and the precise position control of the print head or printing platform is achieved through the movement of the nut on the screw. The trapezoidal screw can provide high-precision and stable motion transmission, allowing the printing device to accurately position the print head, thereby achieving high-quality printing effects. The characteristic of the trapezoidal screw is that it has self-locking properties, that is, when the force or torque stops being applied, the screw will not rotate automatically and can maintain the stability of its position. This feature is very important for printing applications because it ensures that the print head remains stable when it stops, avoiding position errors or printing quality problems. In addition to printing applications, trapezoidal screws are also widely used in other fields such as mechanical engineering, automation equipment, aerospace, etc., for precise position control and motion transmission. --

Trapezoidal screw: Pure sliding friction - brass (good self-lubrication) has a very low efficiency of 60%, a simple structure, low cost and no precision, large surface contact load, large starting resistance, resulting in creeping and creeping during ultra-low speed operation. Trapezoidal screws can be selected when there is no precision requirement, a large axial load is required, the budget is low and the cost needs to be reduced, the speed is low, and the occasion is not important. Ball screw: It realizes high-efficiency and low-friction transmission through rolling media, with an efficiency of more than 90%. Compared with surface contact, ball is point contact, with smaller load, higher precision and higher cost. The speed of the screw is limited, and it is best to control it within 1500rpm. If the screw is too long, it needs to be pressed down to within 1000rpm. Unit movement of the screw: lead (pitch, Pb) [Fixed seat]: Angular contact bearings are used in pairs to constrain the axial direction of the screw and are mainly used to bear the axial force of the screw [Support seat]: Deep groove ball bearings are used alone, purely to support the tail of the screw, so that it does not run around and can slide axially [Fixed + Support]: The most classic structure [Fixed + Free]: There is no way to put it, there is no place to install the support seat (short stroke, structural requirements), the speed cannot be too high, and the load should not be too large [Fixed + Fixed]: Not suitable for high-speed operation, heating will cause the screw to deform and get stuck, very good rigidity, high precision [Support + Support]: No precision, loose mechanism, small load, almost no requirements for motion performance---hand-cranked adjustment mechanism Nut structure of ball screw [External circulation]: Better high-speed performance, complex structure, higher cost [Internal circulation]: Slightly lower cost, more compact structure, easy to install Ball Screw precision C0 C1 .......C7 C10 ... The larger the number, the worse the accuracy and the lower the cost The screw rods of C7 and later are processed by extrusion molding --- rolled screw rods: high production efficiency----cheap, short delivery time The screw rods of C5 and earlier are processed by whirlwind milling + grinding --- ground screw rods: low production efficiency---very expensive, high accuracy The most used: C7 Ball Screw Preload Effectively prevent the nut seat from offsetting due to clearance when the load is large (improve the dynamic accuracy of large loads) Increases internal stress, greater resistance, and increased heat generation

1. The transmission efficiency is different. The transmission efficiency of the ball screw is as high as 90~96%, while the transmission efficiency of the ordinary screw is about 26~46%. That is to say, under the same size of complexity, the ball screw can use a smaller driving power, which can effectively reduce production costs, reduce losses, and increase more benefits for the enterprise. 2. The transmission speed is different. The ball screw is rolling friction, and the ordinary screw is sliding friction. When the transmission is running, the temperature rise of the former is much lower than that of the latter. The ball screw can undertake high-speed transmission tasks. 3. The precision is different. The friction coefficient of the ball screw can be 0, but the ordinary screw directly increases the force at both ends of the sample through linear motion, so it has a certain sliding friction coefficient. Compared with the ball screw, the precision and efficiency are relatively low. 4. The service life is different. The surface friction of the ball rolling friction is small. Under the premise of reasonable operation of various cleaning and maintenance, the service life of the ball screw is longer than that of the ordinary screw. 5. Difference in self-locking property. Ball screws have almost no self-locking property and have reversibility of transmission; while ordinary screws have self-locking property. 6. Difference in economic efficiency. Ball screws are more complicated than ordinary screws, but they are also better, so the price of ball screws is a little higher than that of ordinary screws. In general, ball screws and ordinary screws have their own advantages and disadvantages, but ball screws are better than ordinary screws in terms of transmission efficiency, transmission speed, accuracy, load, life, etc., so they are more suitable for use in linear slide modules.

As a kind of precision transmission element, the ball screw bears a large load during the working process. It is widely used in automation equipment, such as industrial robots, automatic loaders, laser processing machines, handling devices, ATC devices of machining centers, etc. It is most suitable for use in combined devices of rotational motion and linear motion. In order to ensure its normal operation and extend its service life, maintenance and care are essential. Today we will briefly understand the maintenance and care methods of ball screws. 1. Clean regularly. During use, the ball screw may accumulate foreign matter such as dust and sand. These foreign matter will not only affect its normal operation, but also cause wear. Therefore, foreign matter inside the spline should be cleaned regularly with tools such as vacuum cleaners or air guns to ensure that its internal cleaning is unobstructed. 2. Lubrication. Select appropriate grease or lubricating oil and lubricate the ball screw regularly to reduce friction resistance, reduce wear and extend service life. At the same time, lubrication can also play a role in cooling and noise reduction, and improve the overall performance of the mechanical system. 3. Regularly check whether the bearing is damaged or severely worn. If there is any problem, it should be replaced in time; check whether the key teeth are deformed or damaged, and adjust or replace them if necessary; check whether the ball screw shaft end is bent or damaged, and repair or replace it if necessary. The ball screw threads also needs to be checked for foreign matter stuck inside. In addition, it should be ensured that all components are firmly installed without looseness to maintain the stability of the equipment. 4. Anti-corrosion treatment, when stored and idle, it should be avoided from being exposed to high humidity and strong acid and alkali environments. At the same time, regular maintenance and anti-corrosion treatment of the ball screw can extend its service life. The maintenance and maintenance of the ball screw must be carried out strictly in accordance with the machine manual and relevant maintenance requirements. It cannot be carried out blindly to avoid unnecessary damage to the ball screw. At the same time, maintenance and maintenance records should be kept to facilitate tracking and troubleshooting. In order to ensure production efficiency and product quality, it is crucial to master maintenance methods.

The load capacity of a ball screw depends on several factors, including the size, shape, material, and design and manufacturing quality of the ball screw. Generally, the load capacity of a ball screw is given in the technical specifications and parameter tables provided by the manufacturer. These specification tables usually list the rated load capacity, maximum load capacity, rated speed, and rated service life of the ball screw. The rated load capacity refers to the recommended load of the ball screw under the design calibration conditions, while the maximum load capacity refers to the maximum load that the ball screw can withstand, but may reduce the life of the ball screw or cause other side effects. The load capacity of a ball screw is also affected by the operating environment and usage conditions. For example, the load capacity of a ball screw may be reduced in a high temperature environment. Therefore, when selecting and using a ball screw, factors such as load type, direction, speed, acceleration, and operating temperature need to be considered. In summary, to determine the load capacity of a ball screw, it is best to refer to the specification table provided by the manufacturer and ensure that it is selected and used according to the actual application conditions.