The internal gear with outer flange slewing bearing is a compact rotational component engineered for applications where the drive system must be positioned internally for protection while the outer ring provides a stable flange interface for machine attachment. This configuration offers a practical solution for equipment operating in environments where gear exposure is a concern and where installation simplicity is valued.
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
Equipment requiring internal drive arrangement and flange mounting



| Inquiry | Type | Brand | Weight | Outline Dimensions (inches) | Mounting Holes | Gear Data | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OD | ID | IO | OI | IE | OBC | No Holes of OBC | IBC | NO.of Holes of IBC | PD | PD 20 Stub. | No.of Teeth | Max Tangential Tooth Load | ||||
This bearing series comprises 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 serves as a robust mounting interface, featuring a broad, flat surface that allows direct bolted attachment to the machine structure without requiring adaptor plates. The inner ring incorporates internal gear teeth machined onto its inner circumference, positioning the drive pinion within the bearing envelope. This internal gear arrangement offers inherent protection against contaminants, debris, and mechanical impact, making it ideal for applications where gear teeth would otherwise be exposed to harsh conditions.

