Kaydon Bearings Slewing ing earings XR Series（169;Kaydon轴承回转ing耳索XR系列）.pdf

©Kaydon Bearings Slewing Ring Bearings Catalog 390 XR Series 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 B e stiffness and rigidity. a