The external gear with inner flange slewing bearing is a robust rotational solution engineered for equipment requiring a reliable mounting interface alongside efficient direct drive capability. This design incorporates an inner ring with an integral flange and an outer ring with external gear teeth, offering a practical combination of simplified assembly and effective power transmission.
Compact crane turntables and lifting equipment
Aerial work platforms and access equipment
Solar tracking systems with space constraints
Light to medium-duty industrial turntables
Packaging and handling machinery


| 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 | t [mm] | Number Of Grease Nipples | Diameter | Diameter | Diameter | Diameter | Distance At Bottom Outer Ring/Inner Ring | Distance At Bottom Outer Ring/Inner Ring | Gear P.C.D. | Module | Number Of Teeth | Tooth Width | K.M | Permissible Tangentialforces, Normal | Permissible tangentialforces, Maximum | 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] | d[mm] | M[mm] | Z | b[mm] | [mm] | [kN] | [kN] | Axial [mm] | Radial [mm] | |||||
This bearing series consists of an inner ring with an integral flange, an outer ring with external gear teeth, and a single row of steel balls arranged between precision-ground raceways. The four-point contact ball geometry allows the bearing to support axial loads in both directions, radial loads, and tilting moments simultaneously within a single, compact row of rolling elements.
The inner flange provides a broad, stable mounting surface that enables straightforward attachment to the machine structure, reducing the need for complex adaptor plates or additional mounting hardware. The outer ring features external gear teeth machined directly onto its circumference, allowing direct pinion engagement without the need for separate gear rings. Both the flange and the outer ring are provided with mounting holes for secure bolted installation.
