C7 Precision Ballscrews Cold Rolling Ball Screw for CNC Machine Sfu2010. High Precision C7 Grade: C7 precision rating ensures high accuracy, reliability, and smooth linear motion for CNC applications. Low Friction & Noise: Rolling bearing design reduces friction significantly compared to sliding action, ensuring quiet operation. High Efficiency Transfer: Optimized spiral groove design allows for high-speed operation with no gap and preloading capabilities. Customizable OEM Service: OEM service available; products can be customized according to customer drawings and specific needs. Wide Application Range: Suitable for CNC machines, robotics, medical equipment, printing, and various industrial automation systems. Comprehensive Component Kit: Available with complete sets including ball nut, nut bracket, support, and coupling for easy installation. 1-Year Warranty Coverage: All products come with a one-year warranty, backed by strict QC testing and high-quality materials. Fast Delivery Options: Stock items ship in 1-3 days; custom orders ship within 3-30 days depending on quantity.