For indexing and positioning applications such as pick-and-place machines, the RS rolling ring drive offers these benefits to linear motion applications:

Smooth shaft. Because the shaft is threadless, its surface remains clean and clog-free. There are no threads where dirt and debris can collect and cause a jam. The design and fabrication, or purchase, of a protective shaft bellows assembly is generally not needed.

No backlash. Special engineering of the bearing assembly prevents backlash, and makes it unnecessary to purchase extra anti-backlash solutions such as preloaded nuts, shims or double enveloping gears. There is never any "play" between shaft and bearing regardless of shaft rotational direction or speed - including during reversal of the system.

Built in overload protection. Unlike screw-based systems, which continue to churn and grind in overload situations, an RS rolling ring drive unit will slip, not jam.

Efficiency option. An optional free-movement lever permits rapid manual positioning of the drive unit - while the system is stopped. It is not necessary to "jog" the unit into position.