thk ball screw

There is still a certain gap between Chunxin and THK in terms of performance, precision, life and reliability, but in recent years Chunxin has made significant progress in technology learning from international brands, and some of Chunxin's high-end products are close to the technical level of THK. The following are the main differences: 1. Materials and heat treatment THK Ball Screw: Using high-quality alloy steel (such as SCM, SUJ2), strict heat treatment process (such as carburizing quenching, low temperature deep cryogenic treatment), uniform hardness, strong wear resistance, and good residual stress control. CHUNXIN Ball Screw: The material purity (such as GCr15) and heat treatment stability are slightly inferior, and uneven hardness or deformation is prone to occur, but Chunxin has now introduced advanced heat treatment equipment, and the gap is gradually narrowed. 2. Manufacturing process and precision THK Ball Screw: Precise grinding process (thread raceway roughness Ra≤0.1μm), precise preload control. The precision level can reach ISO P1~P3 (C0~C3), and the reverse clearance is extremely small (≤0.005mm). CHUNXIN Ball Screw: The low-end and mid-end products are mainly rolled, and the precision is mostly P5~P7 (C5~C7); the high-end ground screw can reach P3. There are still fluctuations in the consistency of preload force and the accuracy of raceway shape, but the process is improved through CNC grinders. 3. Life and reliability THK Ball Screw: The dynamic load life calculation is conservative (such as THK's nominal life can reach 100,000 hours), and the failure rate is low in actual use. CHUNXIN Ball Screw: The nominal life is close (refer to ISO 3408 standard), but due to the influence of materials, lubrication and assembly, noise may increase or precision may decrease after long-term use. Chunxin improves reliability by optimizing ball circulation design (such as the reverser structure). 4. Technological innovation THK Ball Screw: Many patented technologies (such as THK's "Hatchet" returner). Provide high value-added solutions (such as dustproof seals, high-speed silent design). CHUNXIN Ball Screw: Has advantages in customized services (such as non-standard strokes) and cost-effectiveness. 5. Price and delivery cycle THK Ball Screw: High price (about 2~3 times that of domestic products with the same specifications), long delivery cycle (usually 8~12 weeks). CHUNXIN Ball Screw: Obvious cost advantage (especially low-precision models), fast delivery (2~4 weeks for conventional models), suitable for scenarios with limited budgets or urgent replacement. Based on the above analysis, the Chunxin brand is gradually moving towards international standards. In the future, Chunxin will continue to learn to bring ball screws into intelligence through intelligence. If you are interested, please contact us at https://www.chunxinauto.com/contact, looking forward to your information.

Causes of Ball Screw Noise In industrial automation and machinery manufacturing, ball screws are widely used due to their high precision and efficiency. However, many users find abnormal noise from their ball screws during long-term use, affecting the stability and lifespan of the equipment. This article will analyze the common causes of noise in ball screws and provide practical suggestions for maintenance and upkeep. Improper Ball Replacement Leads to Noise Original ball screws have uniformly sized balls inside the nut and are sealed with lubricating oil, making them very quiet under normal conditions. However, as time goes on, the balls wear out and need to be replaced. If the newly installed balls are of a different size than the originals, it will cause uneven load on the nut, resulting in greater noise. In this case, the balls cannot achieve a good fit, causing abnormal noise during operation and potentially accelerating component wear. Therefore, when replacing balls, it is essential to select balls of the same specifications as the originals and ensure proper cleaning and lubrication during installation. Slack Fit and Increased Clearance After prolonged operation, wear may cause clearance between the nut and TBI screw in the ball screw assembly. This slack fit will cause vibration during operation, resulting in noise. Clearance not only affects transmission accuracy but also leads to mechanical resonance, exacerbating noise problems. Regularly checking the tightness of the nut and screw, and properly adjusting the preload, are important measures to reduce this type of noise. Surface Peeling and Abnormal Friction After prolonged load bearing, the ball surface may peel off, or damage may occur to the screw shaft on the cutting surface. Both of these will affect the smooth operation of the balls on the track. Damaged areas increase frictional resistance, causing abnormal vibration between the nut and shaft, producing noise. If peeling or abnormal friction is found, the machine should be stopped immediately for inspection and replacement of damaged parts. Maintaining a smooth track and adequate lubrication is key to extending equipment life and reducing noise. Emphasis on Daily Maintenance Many noise problems are caused by neglecting daily maintenance. Regular cleaning and adding appropriate lubricating oil can effectively reduce the frequency of wear and abnormal noise.Furthermore, equipment maintenance records should be established to document each overhaul and parts replacement, enabling the tracing of root causes and improving troubleshooting efficiency. Only by adhering to scientific management and meticulous maintenance can the long-term quiet and stable operation of ball screws be guaranteed. Scientific Analysis Facilitates Precise Solutions Faced with various noise phenomena generated by ball screws, one should not panic blindly, but rather investigate item by item based on the actual operating conditions. From ball specifications and clearance to surface condition, every detail can become a breakthrough point for solving the problem. Through scientific analysis and standardized operation, not only can potential noise hazards be effectively eliminated, but the overall performance of the machinery can also be improved, providing a more efficient and reliable guarantee for the production line. This is also an indispensable part of modern machinery management. For more information about ball screw informations, Please contact us www.chunxinauto.com！