The double flange slewing bearing is a practical rotational solution designed for machinery where both the inner and outer rings must provide direct flange interfaces for structural attachment. This design incorporates flanges on both rings, offering a straightforward and effective mounting approach for equipment requiring balanced load distribution and simplified assembly.
Compact crane turntables and winch drives
Aerial work platforms and lifting equipment
Solar tracking systems with space constraints
Light to medium-duty industrial turntables
Packaging and handling machinery
Equipment requiring flange mounting on both rings


| Inquiry | Type | Brand | Weight | Ball Track Diameter | Outside Dia | Inner Dia | Total Height | External Bolt Circle Dia | Internal Bolt Circle Dia | Number Of Bolt Holes Per Hole Circle | Bolt Hole Dia | ni | B/M | Number Of Grease Nipples | Diameter | Diameter | Diameter | Diameter | Distance At Bottom Outer Ring/Inner Ring | Distance At Bottom Outer Ring/Inner Ring | Bearing Clearance | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| [KG] | DL [mm] | Da [mm] | Di [mm] | H [mm] | La [mm] | Li [mm] | na | B/M [mm] | [mm] | n₁ | O[mm] | U[mm] | A [mm] | C [mm] | Hu[mm] | Ho[mm] | Axial [mm] | Radial [mm] | ||||
This bearing series consists of an inner ring with an integral flange, an outer ring with an integral flange, and a single row of steel balls arranged between precision-ground raceways. The four-point contact ball geometry enables the bearing to support axial loads in both directions, radial loads, and tilting moments simultaneously within a single, compact row of rolling elements.
Both rings are manufactured with wide, flat flanges that serve as mounting interfaces, allowing direct bolted attachment to the respective machine structures without requiring adaptor plates or additional mounting brackets. This dual-flange design facilitates accurate alignment during installation and ensures even load distribution, reducing stress concentrations and enhancing long-term reliability.
