Selecting the appropriate external gear slewing bearing for heavy equipment requires a thorough understanding of operational demands and technical specifications. Start by calculating the combined loads (axial, radial, and moment) your application will encounter. Use standardized formulas or consult bearing manufacturers to ensure accurate load ratings.

Gear design is another critical factor. External gear slewing bearings come in various gear types, including spur and helical gears. Consider gear modulus, tooth profile, and hardness to match drive system requirements. Material selection—typically high-carbon chromium steel or case-hardened alloys—impacts durability and fatigue resistance.

Installation best practices ensure optimal performance. Always mount bearings on rigid, machined surfaces to prevent distortion. Use calibrated tightening tools for bolt preload, and verify alignment post-installation. Regular maintenance, such as gear tooth inspection and lubrication, minimizes wear and maximizes service life.