If you’re searching for a reliable, high-precision transmission part to convert rotary motion into smooth linear movement for your machinery, ball screws are your ideal solution. As a professional Chinese ball screw manufacturer, Shuntai has specialized in producing customized rolled ball screw assemblies including square flange ball screw nuts like the popular 4005 model, serving industrial clients worldwide with stable quality and flexible customization. Ball screw systems consist of precision threaded screw shafts and circulating ball nut assemblies. Tiny steel balls roll between the screw thread and nut raceway, drastically reducing friction compared to traditional lead screws. This core design delivers smooth, efficient linear transmission, widely adopted across CNC machine tools, automation equipment, robotics, 3D printing, packaging machinery and more industrial fields. Core Product Parameters & Customization Range We support full-range size customization to match diverse equipment design demands: Screw Diameter: Standard sizes from 5mm to 65mm Lead Options: 3mm to 300mm for different speed & stroke requirements Total Length: Machinable from 10mm up to 6000mm Precision Grades: C3, C5, C7 accuracy levels for high-precision, medium-precision and general industrial use Material Selection: Standard GCr15 bearing steel for heavy-load scenarios; optional stainless steel, alloy steel, carbon steel, brass and aluminum for special working environmentsOur Standard 4005 Square Flange Ball Screw AssemblyOur hot-selling 4005 square flange ball screw nut assembly is manufactured via mature rolling screw technology using GCr15 bearing steel. The square flange structure simplifies bolt mounting on machine slides, with built-in internal ball circulation channels for continuous stable operation. This model stands out for long service life and consistent load performance, a top pick for medium-load automation production lines.Advanced Manufacturing ProcessEvery ball screw we produce undergoes strict multi-step precision processing to guarantee performance consistency: Cold rolling, CNC grinding, rotary milling, precision CNC machining, CNC turning & milling, drilling, grinding and straightening treatment. Each production link is quality-inspected to eliminate deformation, surface defects and dimensional errors before finished goods delivery.Key Advantages of Shuntai Ball ScrewsUltra High Precision: Available C3/C5/C7 tolerance grades to meet strict positioning accuracy needs for CNC and precision automationSuperior Durability & Long Service Life: GCr15 steel base with professional heat treatment, wear-resistant ball circulation structure, less maintenance frequencyHigh Rigidity & Adjustable Preload: Custom preload design eliminates backlash, maintains rigid linear movement under heavy dynamic loadsUltra-Smooth Running: Rolling friction mechanism cuts friction loss greatly, low noise, stable operation at high or low travel speedsStrong Customization Flexibility: Custom thread ends, nut types (square flange, round flange, single/double nuts), surface finishing and packaging as your drawings or requestsOrder & Logistics InformationProduction Lead Time: Standard models ship within 7 working daysLoading Port: Shanghai Port for convenient global sea & air freight arrangementsCustom Packaging: Shock-proof, rust-proof export packaging customized based on order size and transportation demands to avoid damage during long-distance shipping Who Can Benefit From Our Ball Screws? Our ball screw assemblies are perfectly suited for equipment manufacturers, automation system integrators, machinery repair factories and robotics developers across global industries: CNC machining centers & lathes Automated linear sliding platforms Medical precision equipment Semiconductor handling machinery Logistics & packaging automation lines Laser processing equipment Automated robotics armsWhy Choose Shuntai as Your Ball Screw Supplier? As a professional ball screw manufacturer based in China, we combine mature rolling production technology with strict quality control systems. Unlike generic distributors, we offer direct factory pricing, full technical drawing support, flexible size customization and dedicated after-sales technical consultation. Whether you need off-the-shelf standard 4005 square flange ball screws or fully custom non-standard linear motion parts, our engineering team can match your mechanical design requirements perfectly. Ready to source high-quality, cost-effective ball screw assemblies for your machines? Click our consultation button to share your drawing, size, precision and load requirements, and we will provide a detailed quotation within 24 hours.