SFU Series – Standard Single-Nut Ball Screw

The SFU series is our most widely produced and extensively applied standard ball screw, featuring a single-nut, external recirculation tube design. This series follows the widely used SFU rolled-screw convention; nut flange and shaft-end machining are confirmed against your drawing before ordering. Available in C5 (precision grade) and C7 (general grade) accuracy levels, it suits the majority of applications including automation, 3C electronics, and general machinery.

Key Features

• Assembly Replacement – Direct replacement of existing same-series assemblies; custom shaft ends per customer drawings
• Single-Nut Design – Compact structure with low frictional torque for medium-light loads and high speed
• External Recirculation – Smooth ball return, excellent temperature control, long-term stability
• Dual Accuracy Grades – C5 for precision positioning; C7 for general transmission; flexible cost-performance
• Noise Optimized – Specially tuned ball matching and return channels for lower noise than peers

Replacing a ball screw? Model codes do not carry across brands, so see what to specify instead in our ball screw interchange guide.

Full Specifications