Description:The swing gear and bearing provides support of the upper frame and transmits torque between the upper frame and car body allowing the top of the machine to rotate on the chassis.Attributes:• Material: Hardened steel• Single row bearing with an internal gear• Spur Gear Number of Teeth: 96• Outside Diameter: 640 mm (25.196 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.