The internal gear with outer flange slewing bearing is a specialized rotational component engineered for applications where gear protection, compact machine layout, and a robust mounting interface are essential. This design incorporates an internal gear on the inner ring and an outer flange on the outer ring, offering a practical solution for equipment requiring the drive pinion to be positioned within the bearing envelope while providing a stable, flange-based mounting arrangement.
Compact crane turntables and winch drives
Aerial work platforms and lifting equipment
Solar tracking systems requiring protected gearing
Light to medium-duty industrial turntables
Packaging and handling machinery


| Inquiry | Type | Brand | Boundary Dimension | Mounting Dimension | Structure Size | Teeth Information | Loading | Weight | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| H [mm] | di [mm] | Da [mm] | La [mm] | Li [mm] | n1 | n2 | φ1 | φ2 | b [mm] | h [mm] | B[mm] | C [mm] | Di [mm] | da [mm] | M | Z | do | |||||
This bearing series consists of an outer ring with an integral flange, an inner ring with internal gear teeth, 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.
The outer flange provides a wide, stable mounting surface that simplifies attachment to the machine structure, eliminating the need for additional adaptor plates or complex mounting hardware. The inner ring features internal gear teeth machined directly onto its inner circumference, positioning the drive pinion within the bearing envelope. This arrangement protects the gear teeth from external contamination, debris, and mechanical damage while contributing to a more compact overall machine design.
