Balancing Power and Flexibility: Exploring Double Row Different Diameter Ball Slewing Bearings
What is a Double Row Different Diameter Ball Slewing Bearing?
A Double Row Different Diameter Ball Slewing Bearing is a unique structural design within the slewing ring family. It features two rows of balls of unequal diameter positioned at different radii. This special configuration allows for enhanced load distribution, combining the load advantages of different ball sizes in a compact, high-performance bearing system.
This type of slewing bearing excels in applications that require simultaneous handling of high axial loads, moderate radial loads, and significant tilting moments—especially in machines where installation space is constrained.
Structural Advantages
Dual-Diameter Ball Rows
By employing balls of different diameters, the load distribution is optimized for both axial and tilting moment resistance. The larger row handles heavy axial loads, while the smaller row offers increased contact points for balance and rotational precision.
Optimized Raceway Angles
Each raceway is engineered with different contact angles to maximize performance under complex force combinations, delivering stability without sacrificing flexibility.
Compact and Lightweight Design
Despite its dual-row structure, this bearing remains compact due to its tight axial dimensions, making it ideal for mobile equipment.
Custom Gear Integration
Available with internal gear, external gear, or non-gear options, it can be adapted to the torque transmission and installation needs of different industries.
Application Scenarios
Mobile Cranes and Truck-Mounted Equipment: High axial load and dynamic shock absorption in compact designs.
Material Handling Systems: For rotating conveyors or transfer tables requiring reliable and continuous rotation.
Wind Turbine Yaw Systems: Long-lasting performance in controlling the direction of rotor alignment.
Large Rotary Platforms and Turntables: Especially useful in equipment that rotates large payloads over time.
Railway Maintenance Machines: Where vibration resistance and low-profile installation are key.
LDB’s Double Row Different Diameter Ball Slewing Bearings
LDB offers a wide range of these specialty bearings for custom and OEM applications. Manufactured in Luoyang, China, with more than 20 years of industry experience, LDB has perfected the metallurgy, precision, and gear shaping needed for demanding installations.
Technical Specifications:
Outer Diameter Range: 500 mm to 6000 mm
Ball Material: GCr15 high-carbon chromium steel
Raceway Material: Forged 42CrMo or 50Mn steel
Seals: Dual rubber sealing for IP54–IP65 protection
Lubrication: Optional centralized lubrication ports
LDB’s products also include induction-hardened gear teeth, precision-ground raceways, and customizable hole patterns to ensure seamless integration into client systems.
Pricing, Supplier, and Manufacturer Insights
As a world-class manufacturer and supplier, LDB delivers tailored solutions across sectors such as construction, mining, energy, and automation.
Price Factors Include:
Bearing diameter and ball diameter ratio
Gear configuration (internal/external/no gear)
Custom hole patterns and surface treatments
Operating temperature and environmental sealing requirements
Typical Price Range: USD $900 to $6000 depending on design complexity, gear type, and application load requirements.
LDB provides instant supplier support through CAD files, load calculations, and global logistics. Clients can request a free consultation and quote through LDB’s official site.
Why Engineers Trust LDB
Full vertical integration: in-house heat treatment, gear cutting, and assembly
Strict QA with dynamic simulation testing
Over 2000 successful projects across 50+ countries
24-hour global support response window
From mobile cranes to energy turbines, LDB’s Double Row Different Diameter Ball Slewing Bearings offer reliable, tailored solutions backed by engineering precision and field-proven durability.
Conclusion
Balancing axial capacity and dynamic precision, the Double Row Different Diameter Ball Slewing Bearing offers a best-of-both-worlds solution. With LDB’s expertise as a trusted global manufacturer and supplier, your equipment gets the stability, flexibility, and performance it needs—without compromise.
