This listing provides a complete precision ball screw assembly for accuracy linear motion applications. It features a SFU1605 ball screw with waist nut, paired with a BKBF support seat, a coupling, and a nut seat processed to a length of 2550 mm. The unit is designed to deliver smooth, repeatable movement and reliable performance in demanding environments. Key benefits precision and repeatability: SFU1605 ball screw with waist nut delivers accurate positioning for demanding CNC and automation tasks. Smooth, lowfriction operation: Ball screw design minimizes friction, enabling steady motion and reduced wear over time. Ready to install: Includes BKBF support seat and coupling for straightforward mounting and alignment. Long travel option: Nut seat processed to 2550 mm supports extended travel in a single continuous axis, reducing joints and potential play. Consistent performance: Constructed to standard SFU1605 specifications to ensure compatibility with common components and systems. Key attributes Model: SFU1605 precision ball screw with waist nut Length: 2550 mm (nut seat processed to this length) Ball screw diameter: 16 mm Lead: 5 mm Nut: waist nut included Support seat: BKBF included Coupling: included Nut seat processing: 2550 mm length Material: quality steel suitable for precision ball screw applications Included components 1 piece SFU1605 precision ball screw with waist nut BKBF support seat Coupling Nut seat processed to 2550 mm Technical considerations Compatibility: Designed for use with standard SFU1605 components and BKBF support seats; coupling is included to connect to drive motors or servos. Dimensional reference: Ball screw diameter 16 mm, lead 5 mm; overall length 2550 mm with nut seat prepared to the same length. Application readiness: Suitable for CNC axes, longtravel linear stages, or automation platforms that require precise, longspan motion. Applications and use cases: No changes CNC machine axis upgrade: Ideal for Zaxis or long X/Y axes in milling or routing centers requiring accurate, repeatable positioning over extended travel. Largeformat 3D printing or laser cutting: Long travel ball screw supports precise layer alignment and consistent print or cut quality on sizeable work areas. Automated assembly or inspection systems: Provides smooth, repeatable linear movement for pickandplace slides, positioning stages, or inspection benches along a single axis. Notes on installation and performance For performance, ensure proper alignment between the ball screw, nut seat, and drive coupling; run within recommended lubrication guidelines for precision components. The BKBF support seat and coupling are included to facilitate secure mounting and stable operation in standard configurations. This product delivers a concise, readytoinstall precision ball screw solution with all required components aligned to SFU1605 specifications, including the 2550 mm nut seat processing, to support accurate and reliable linear motion in a variety of engineering applications.