UNA flange slewing bearing (also called a flanged rotary bearing or slew ring) is a specialized bearing designed to handle axial, radial, and moment loads simultaneously while enabling smooth rotational movement. It is widely used in heavy-duty applications such as cranes, excavadoras, turbinas de viento, and industrial turntables.
Flange Slewing Bearing Working Principle
How it Works – Step-by-Step:
Componentes: Like any slewing bearing, a flange type consists of:
Anillo interior: One of the main structural rings. It has a precisely machined raceway for the rolling elements. It might have the flange, or it might be plain. It can also have gear teeth (internal or external) or be gearless.
Anillo exterior: The other main structural ring, also with a raceway. It might have the flange, or it might be plain. It can also have gear teeth or be gearless. Crucialmente, at least one of the rings must have a flange for it to be a “flange slewing bearing”.
Elementos rodantes: These are typically balls (often in a “four-point contact” arrangement) or cylindrical/tapered rollers (often in a “crossed roller” arrangement). They sit between the inner and outer ring raceways and allow low-friction rotation.
Cage/Spacers: Keep the rolling elements evenly distributed and prevent them from contacting each other.
Seals: Protect the internal components from contaminants (suciedad, agua, escombros) and retain the essential lubricant (grease).
The Flange(s): The key feature – the projecting rim with mounting holes on either the inner ring, outer ring, or sometimes both.
Montaje: This is where the flange makes a difference. Instead of needing to bolt through the main body of the bearing ring (which requires a very rigid and precisely machined mounting surface), the flange provides an easier attachment point.
The structure that mates with the flanged ring simply needs a flat surface to meet the flange.
Bolts are passed through the holes in the flange and secured into the mating structure (p.ej., the base of an excavator or the rotating platform of a medical scanner).
The non-flanged ring (if there is one) is mounted conventionally to the other structure.
Transmisión de carga:
Axial Load: Transmitted vertically through the rolling elements from one ring to the other.
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More detailed information about how flanged slewing bearings work can be found by clicking visit: https://www.mcslewingbearings.com/a/news/flange-slewing-bearing-working-principle.html
