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.

In the field of mechanical motion control, linear guides are known as the "skeleton" of precision motion. They provide stable and precise linear motion paths for equipment through high-rigidity, low-friction sliding or rolling. From micron-level precision instruments to heavy-duty industrial equipment, linear guides are everywhere. This article will deeply analyze the typical application scenarios of linear guides in different industries and reveal how they have become the behind-the-scenes hero of the development of modern technology. 1.Industrial Automation: "Precision Executor" on the Production Line CNC Machine Tools: Linear guides are the core components of CNC machining centers, driving the spindle to move at high speed in the X/Y/Z axis direction, ensuring cutting accuracy of 0.001mm. Laser Cutting/Welding Equipment: Linear guides are used to achieve smooth movement of the laser head, avoid spot deviation caused by vibration, and ensure the cutting consistency of metal sheets. Assembly Robot Arm: In automobile manufacturing, a robot arm equipped with linear guides can complete processes such as door welding and screw locking, with a repeat positioning accuracy of ±0.02mm. 2. Semiconductor and panel manufacturing: "Guardian" of micron-level precision Lithography machine: Linear guides drive the silicon wafer stage to step at the nanometer level during the exposure process, supporting chip processes below 7nm. Wafer inspection equipment: Cooperate with linear motors to achieve high-speed scanning and quickly identify microscopic defects. LCD panel handling: Vacuum adsorption arms smoothly transfer large-size glass substrates through guides to prevent brittle materials from breaking. 3. Medical equipment: "Steady hand" in life science and technology CT/MRI scanning bed: Linear guides control the entry and exit and lifting of the patient platform to ensure accurate imaging positioning. Surgical robot: The robotic arm of the Da Vinci system relies on guides to achieve multi-degree-of-freedom precision movement and reduce surgical tremors. Automated inspection equipment: In the PCR detector, the guide drives the sample tray to accurately position and improve the detection throughput. 4. New energy and environmental protection: "transmission link" of the green revolution Photovoltaic panel laminator: Heavy-load linear guides support more than 10 tons of pressure to ensure the quality of solar panel packaging. Lithium battery pole piece rolling: High temperature resistant guide rail drives the roller in a dry environment, and controls the electrode thickness error to ≤2μm. Wind power generation variable pitch system: Offshore wind turbines use corrosion-resistant guide rails to adjust the blade angle to cope with strong wind impact. 5. Emerging fields: "Invisible accelerator" of innovative technology 3D printing: Metal additive equipment synchronously controls the laser head and powder laying device through the guide rail to achieve layer-by-layer forming of complex structures. Logistics AGV: Intelligent storage robots use self-lubricating guide rails and can run continuously in -20℃ cold storage without jamming. Smart home: Civil products such as electric curtains and lifting TV cabinets use micro-silent guide rails to improve user experience. 6. Special environment applications: "Reliable partner" for extreme working conditions Aerospace: Satellite antenna deployment mechanism uses space-grade lubricated guide rails, which can withstand temperature differences of -180℃~150℃. Food machinery: Stainless steel linear guide rails meet IP69K protection standards and can withstand high-pressure washing and acidic detergents. Deep-sea exploration: Underwater robots use sealed guide rails to stably control the robotic arm in the 6,000-meter deep sea. Why are linear guides irreplaceable? Balance of precision and rigidity: Compared with traditional slide rails, preloaded roller guide rails can achieve ±1μm precision and rigidity of more than 200kN/m at the same time. Life and maintenance optimization: Through surface hardening treatment and sealing structure, the service life can reach more than 5,000km, reducing the cost of equipment downtime. Modular design: Supports rapid integration of guide rails and drive systems, shortening the equipment development cycle. Future trends: intelligence and customization With the advancement of Industry 4.0, linear guides are deeply integrated with sensors and AI algorithms. For example: Guide rails with built-in vibration sensors can monitor the health status of equipment in real time Adaptive damping system dynamically adjusts friction coefficient according to load Miniaturized linear modules promote innovation in precision assembly of consumer electronics Conclusion From nano-level chip manufacturing to 10,000-ton offshore wind turbines, linear guides are driving the progress of modern industry in a "silent" way. It is not only the cornerstone of mechanical design, but also a witness to mankind's breakthrough in technological boundaries. In the future, with the development of material science and intelligent control, this classic component will continue to write the legend of precision transmission in more fields.

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.

Micro guide rails refer to guide rail systems with a width of less than 25mm. They are usually composed of guide rails and sliders. They are small in size, light in weight, high in precision, low in noise, and long in life. They are mainly used to support and position optical components such as mirrors, lenses, filters, etc. Micro guide rails help improve the performance and stability of equipment by providing high-precision motion control. In optical instruments, the role of micro guide rails is particularly critical. Next, let's take a look at the role of micro guide rails in optical instruments. 1. Support and positioning: Micro guide rails can ensure the precise position and stability of optical components. They provide a reliable support structure that enables optical components to be fixed in the desired position, thereby maintaining the stability of the optical system. 2. High-precision guidance: In scenes such as microscopes, optical microscopic imaging systems, and laser processing equipment, tiny-sized motion and positioning are critical to imaging quality and processing accuracy. By fine-tuning the position of the guide rail, the position and direction of the optical component can be fine-tuned to achieve the desired optical effect. 3. Reduce friction and vibration: Friction and vibration can have a negative impact on the imaging and measurement of optical instruments, reducing their accuracy and stability. Micro guide sliders have excellent low friction characteristics and vibration reduction capabilities, which can effectively reduce the impact of friction and vibration, improve the imaging quality and measurement accuracy of optical instruments, especially in applications that require a stable optical path or precise measurement, which is essential for accurately controlling the position and movement of optical components. 4. Automation: Micro guides can be integrated with automation systems to achieve high-speed, high-precision and automated motion control of optical components. This enables optical instruments to achieve higher efficiency and accuracy, as well as a wider range of applications. The role of micro guides in optical instruments is support and motion control. With its high precision and high stability, it provides a stable optical path and precise position of optical components. With the continuous advancement of optical instrument technology and the continuous expansion of application areas, micro guides will play a more important role in the future.

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. --

Curved rails are a type of rail structure used for transportation, which has the advantage of providing smooth movement and precise positioning. Here are some common uses of curved rails and their advantages: 1. Mechanical equipment: Curved rails are widely used in mechanical equipment, such as CNC machine tools, drilling machines, milling machines, grinders, etc. They can provide high-precision and stable guide support, allowing the equipment to accurately perform positioning movements and processing operations. 2. Conveying systems: In logistics and production line systems, curved rails can be used for conveying equipment. They can help objects move, position and transfer stably. Curved rails can also realize curved and circular transportation in conveying systems, allowing objects to move along a prescribed path and turn when necessary. 3. Elevators and lifts: Curved rails are also widely used in elevator and lift systems. They can ensure that the elevator or lift moves up and down smoothly and provide accurate positioning. Curved rails can reduce vibration and noise, providing a more comfortable and safe ride experience. 4. Railway transportation: Curved rails are used in the design of railway curves in the field of railway transportation. Compared with straight rails, curved rails can provide smoother turns, reduce centrifugal force and friction of the train, and improve the stability and safety of the train. The advantages of curved rails include: Precise positioning: The design and manufacturing precision of curved rails are high, which can provide accurate positioning and guidance. Smooth movement: Due to the curved shape of the curved rail, objects can move smoothly on it, and vibration and vibration are reduced or eliminated. Load capacity: Curved rails usually have a high load capacity and can withstand the transportation needs of heavy objects and high loads. Reliability and durability: Curved rails are usually made of high-quality materials and have a long service life and reliability. Adaptability: Curved rails can be customized according to the needs of specific applications and are suitable for a variety of transportation and guidance scenarios. In general, curved rails have a wide range of uses and have the advantages of precise positioning, smooth movement, high load capacity and reliability, which can meet the needs of various different fields and applications. --

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

Curved guides and linear guides are two common types of guides. Both have support and guidance functions. Both can transfer the energy of movement to the receiving end to achieve stable movement. So what is the difference between the two? From a structural point of view, linear guides are in the shape of a straight line, and they play a role in positioning, supporting and guiding in the movement of machinery and equipment. Curved guides are a special circular structure that is widely used in hardware, automation and precision mechanical equipment, and can maintain the axis position of relative movement unchanged. From the perspective of motion trajectory, the movement mode of linear guides is linear motion driven by balls. The contact area between the balls and the guide grooves is small, so that the surface of the guide is evenly stressed and has a long life cycle. The arc guide realizes movement by the rolling of the balls on the curved surface of the guide. The curved surface of the guide bears a larger contact area, so the load capacity is higher than that of linear guides. From the application point of view, linear guides are widely used in CNC machine tools, semiconductor equipment, medical equipment and other fields due to their linear motion characteristics. They can provide high-precision, high-rigidity and low-friction motion control, and are suitable for high-speed and high-precision linear motion requirements. Curved guides are more suitable for occasions that require curved motion or circular interpolation, such as robots, aerospace equipment, precision measuring instruments, etc. They can achieve smooth curved motion and precise circular interpolation, improving the motion performance and positioning accuracy of the equipment. The above is the difference between linear guides and circular guides. When choosing guides, users in the machinery industry should choose the appropriate guide form according to the specific usage scenarios and needs to ensure the stability and reliability of the mechanical equipment.

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.