Four Point Contact Ball Slewing Ring Bearing

What Are Four Point Contact Ball Slewing Ring Bearings?

Four point contact ball slewing ring bearings are designed to accommodate loads in every direction — axial, radial, and tilting moments — using a single row of balls. The ball contacts the raceway at four points, allowing for efficient load distribution and rotational accuracy under demanding conditions.

Key Variants

These bearings are divided into two structural types:

• Flanged type: Easier to mount and align, often used in compact applications.
• Without flange: Standard design for general-purpose load handling.

Each variant can be configured with:

• Internal gear
• External gear
• Without gear (plain raceway)

Interchangeability

Our four point contact ball slewing ring bearings are designed to be dimensionally and functionally interchangeable with many top global brands:

• KAYDON
• Schaeffler (INA)
• SKF
• ROTEK
• ROTHEERDE
• ROLLIX
• IMO

Applications

These slewing bearings are ideal for use in industries that require compact structure with high-load capacity:

• Excavators and cranes
• Rotary tables
• Wind power generation
• Radar and communication towers
• Industrial robotics

Advantages of Four Point Contact Ball Slewing Bearings

• Handles axial, radial, and moment loads simultaneously
• Compact and lightweight design
• Available in multiple configurations
• Cost-effective solution for space-constrained systems
• Reduced installation time with flanged options

Choosing the Right Configuration

To select the most suitable bearing, consider:

• Load direction and magnitude
• Space availability and mounting method
• Whether gear integration is required
• Environmental factors (e.g. exposure to dust, moisture)

Conclusion

Four point contact ball slewing ring bearings are an efficient solution for many rotary systems. Their versatility and interchangeability with major brands make them a practical choice for OEMs and maintenance professionals alike.