Four-Point Contact Ball Slewing Ring Bearings

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.