NSK 35bd5020 Bearing
Geared Slewing Ring
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 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 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.
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- China Top Supplier Over-Size Slewing Bearing Rings
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