Four-Point Contact Ball Slewing Bearings for Construction Machinery Excavators

As a professional manufacturer of slewing bearings in Xuzhou, We specialize in the research, development, and production of excavator four-point contact ball slewing bearings. Our products deliver high efficiency, stability, and precision. Choose our four-point contact ball slewing bearings to meet all your requirements.

Four-Point Contact Ball Slewing Bearings - The Ideal Solution for Efficient Load-Carrying and Compact Design

Four-point contact ball slewing bearings are high-performance mechanical components. Their innovative “four-point contact” design enables a single bearing to efficiently handle axial forces, radial forces, and overturning moments simultaneously. This high-integration feature makes them exceptionally advantageous in space-constrained and weight-sensitive applications. The single-row four-point contact ball slewing bearing consists of two rings, offering a compact structure and light weight. The balls make four-point contact with the curved raceways, enabling simultaneous support of axial forces, radial forces, and overturning moments. It is suitable for engineering machinery such as rotary conveyors, welding manipulators, small and medium-sized cranes, and excavators.

I. Core Design: Compact, Efficient, Reliable

1.  Integrated Compact Structure  

    The bearing features an integrated design combining inner ring, outer ring, balls, separator, and seals, resulting in an exceptionally compact structure that facilitates equipment lightweighting and miniaturization.

2.  High-Efficiency Four-Point Contact Principle  

    The unique four-point contact design between balls and raceways evenly distributes loads, significantly enhancing load capacity and rotational efficiency. This makes it particularly suitable for reciprocating rotational motion.

3.  Enhanced Sealing and Durability  

    Patented multi-layer sealing technology effectively prevents dust and moisture ingress. Select models incorporate integrated heat dissipation plates, extending service life and reliability in harsh operating conditions.

II. Key Performance Advantages  

High Rigidity & Low Friction: Provides stable rotational support for precise, smooth motion.  

Multi-Directional Load Capacity: Replaces complex multi-bearing assemblies, simplifying equipment structure.  

Easy Installation & Maintenance: Modular design (e.g., patented snap-fit structure) enables rapid assembly, reducing installation time and maintenance costs.

III. Typical Application Fields

This bearing series is ideal for:

Construction Machinery: Small-to-medium excavators, truck cranes, aerial work platforms.

Industrial Automation: Industrial robot joints, CNC machine tool rotary tables, precision positioning systems.

Specialized Equipment: Military hardware, radar mounts, large amusement ride rotating platforms.

IV. Value and Cost

Bearing pricing is determined by dimensions, load capacity, and customization requirements. Economical small bearings (e.g., for automation equipment) offer affordable entry points, while high-performance custom bearings for heavy-duty equipment represent higher value investments. We are committed to delivering the most cost-effective solutions for our customers.

Four-point contact ball slewing bearings, with their exceptional comprehensive load-bearing capacity and space efficiency, represent a wise choice for optimizing equipment design.