Kaydon XR cross roller slewing ring bearing

Introduction

The XR Series consists of Kaydon cross roller bearings. They provide a high degree of stiffness and low rotational torque within a minimal envelope. This design should be considered when a four-point contact ball bearing does not meet the operating performance requirements for torque and stiffness.

Design Features

The internal configuration consists of cylindrical rollers in a v-shaped groove in each ring. The rollers are oriented with alternating axes of rotation. Positioned in this manner, the bearing accepts all combinations of radial, thrust, and moment loads. Rotational torque is less than a four-point contact ball design because each roller only transmits load in a single direction, and the greater contact area and geometry of a roller versus a ball provides a higher degree of stiffness and rigidity. A roller of approximately the same size as a ball has greater load-carrying ability. However, because not all the rollers are oriented in one direction, their thrust and moment load capacity is less than that of a four-point ball bearing. Gear teeth or other drive mechanisms can be provided on the inner or outer support ring, and your choice of hole pattern can be added for bearing retention.

Applications XR Series bearings have been used successfully in applications requiring extra stiffness with a low torque requirement including:

❚ Radar ❚ Military turrets ❚ Machine tools ❚ Tunnel boring machines

Model reference:

16318001
16319001
16320001
16321001
16322001
16323001
16324001
16325001
16326001
16327001
16328001
16329001
16330001
16331001
16332001
16333001
16334001
16335001
16336001
16337001
16338001
16339001
16340001
16341001
16342001
16343001
16344001
16345001
16346001
16347001
16348001
16393001