Slewing rings use self-lubricating, low-friction sliding elements in place of ball bearings. They represent a step forward in slewing ring bearing technology. The geared version allows the slewing rings to be driven by belt, rack, or pinion gear.

Most slewing ring manufacturers Geared Slewing Ring offer a geared option. we offers a spur-gear solution, which complies with DIN3967. The mating gear for any slewing ring should be made of a material that is softer than the actual gear itself. For example, a slewing ring that uses a gear made from anodized aluminum would ideally have a mating gear made of POM. Aside from the fact that POM is softer than anodized aluminum, this specific combination would make the system completely dry-running, which is an added bonus. In comparison, a slewing ring that NSK 35bd5020 Bearing uses both a gear and a mating gear made of aluminum, or any other metal, is ideal for intermittent movements. However, metal gears require constant lubrication, which is costly, time-consuming and messy. If a slewing ring uses a mating gear made from steel, the gear should be made of the same material in order to avoid damaging the slewing ring.