Kaydon XR Slewing Ring Bearings

The internal structure comprises cylindrical rollers positioned in a v-shaped groove in each ring, with alternating axes of rotation. This configuration allows the bearing to handle radial, thrust, and moment loads effectively. The rotational torque is lower compared to a four-point contact ball design because each roller transmits load in a single direction. Additionally, the larger contact area and roller geometry contribute to higher stiffness and rigidity.

While a roller of similar size to a ball can carry more load, the thrust and moment load capacity of the rollers is lower than that of a four-point ball bearing due to their varied orientations.

The inner or outer support rings can be equipped with gear teeth or other drive mechanisms, and a choice of hole patterns can be added for bearing retention.

Applications

XR series bearing solutions have been used successfully in applications requiring extra stiffness with a low torque requirement including:

• Radar
• Military turrets
• Machine tools

The key features of Kaydon XR series slewing ring bearings include:

1. Cross Roller Design: The internal configuration consists of cylindrical rollers in a v-shaped groove in each ring, with alternating axes of rotation.
2. Versatile Load Handling: The bearing can accept various combinations of radial, thrust, and moment loads.
3. Low Rotational Torque: The roller orientation allows for reduced rotational torque compared to a four-point contact ball design.
4. High Stiffness and Rigidity: The larger contact area and roller geometry offer a higher degree of stiffness and rigidity.
5. Enhanced Load-Carrying Capacity: The rollers’ size enables them to carry more load compared to similarly-sized balls.
6. Customization: The bearings can be designed with gear teeth or other drive mechanisms on the inner or outer support ring, and a choice of hole patterns can be added for bearing retention.
7. Ideal Alternative: XR series bearings are ideal when a four-point contact ball bearing does not meet specific torque and stiffness requirements.
8. Compact Design: Despite their load capacity, XR series bearings have a relatively compact envelope.

These features make Kaydon XR series slewing ring bearings suitable for a wide range of applications where high load capacity, low torque, and stiffness are crucial design considerations.