Using internal ball-return technology, miniature ball screw provides typical 95% efficiency, repeatability, precise positioning, and smooth motion. Standard diameters are 4 mm (1 mm lead); and 6 and 8 mm. Rolled and ground units are available in precision classes from ISO3-ISO7 (0.012/300- 0.05/300 mm). Nylon wipers protect from contamination. Ends can be machined to customer specifications.