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• Triple row roller bearing with an internal gear• Spur Gear Number of Teeth: 107• Outside Diameter: 2461 mm (96.889 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.