The external gear with inner flange slewing bearing is a thoughtfully designed rotational component that integrates a mounting flange into the inner ring while providing external gear teeth on the outer ring. This configuration offers a streamlined alternative to traditional bearing arrangements, combining the load-carrying capabilities of four-point contact ball technology with the convenience of a pre-engineered mounting interface.
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




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 with spacers 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 is designed to serve as the primary mounting interface, eliminating the need for separate adaptor plates or complex mounting brackets. This integration simplifies the overall machine design and reduces the number of components required for installation. The outer ring features external gear teeth cut directly onto its outer surface, enabling direct engagement with a drive pinion for efficient power transmission. Both the flange and the outer ring are drilled with mounting holes to facilitate secure bolted attachment.


