The external gear with inner flange slewing bearing is a compact rotational component designed to meet the demands of modern machinery where space efficiency and ease of installation are critical. This configuration integrates a mounting flange into the inner ring while incorporating external gear teeth on the outer ring, offering a practical solution for applications requiring both direct drive capability and a simplified 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
Equipment requiring direct pinion drive and simple mounting



| Inquiry | Type | Brand | Drawing No. | Dimensions | Fixing Holes | Gear Teeth | Tooth Force | Mass | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Da [mm] | U [mm] | C [mm] | D [mm] | Di [mm] | La [mm] | na | Li [mm] | ni | P [mm] | m | Z | Fz nor KN | Fz max kN | Weight [KGS] | ||||
This bearing series comprises 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 enables the bearing to simultaneously support axial loads in both directions, radial loads, and tilting moments within a single, compact row of rolling elements.
The inner flange serves as the primary mounting surface, providing a generous, flat interface for bolted attachment to the machine structure. This integrated design eliminates the need for additional adaptor plates, reducing overall component count and simplifying the assembly process. The outer ring features external gear teeth machined directly onto its circumference, enabling direct engagement with a drive pinion for efficient power transmission without the need for separate gear components.

