HIWIN rolled ball screws are made by a rolling process of the screw spindle instead of a grinding process. Rolled ball screws not only have the benefit of low friction and smooth running for the linear feed system compared with traditional screws, but also can be supplied with quick stock delivery and lower production price.
HIWIN uses the most advanced technology in the ball screw rolling process, and maintains the homogeneous manufacturing procedure of selecting materials, rolling, heat treating, machining and assembling.
In general, rolled ball screws use the same preload method as the precision ground ball screws, except that there are some differences in the lead error definition and the geometric tolerance. The grade of the rolled ball screws can be ordered according to the same nut dimension of the precision ground ball screw. If the ends of the spindle are unmachined, the geometric tolerance does not apply.