An External Retaining Ring is a mechanical component to securely fasten and retain bearing bore sleeves within axle box mountings. The self-locking feature of the retaining ring eliminates the need for additional fasteners or external devices to maintain its position once installed. Instead, the inherent design of the ring allows it to exert a radial force against the inner surface of the mounting, effectively preventing any axial movement or displacement of the bearing bore sleeve under operating conditions.Attributes:• Ensure a tight and consistent fit• Manufactured to precise specifications and are built for durability and reliabilityApplications:An External Retaining Ring is used in the bearing bore sleeve in the axle box mounting once the ring expands back to its original size, engaging with the mating features of the housing and securely locking the bearing bore sleeve in position.