An Internal Retaining Ring, also known as a snap ring, is a type of fastener used to secure components within a bore or housing. It is designed with a circular shape and a small opening or gap. It is installed inside a groove or recess on the inner surface of the planetary carrier. It is expanded or contracted to fit into the groove, creating a secure and reliable hold on the planet's gears. It prevents the planet gears from moving radially out of position during operation. Attributes:• Provide strength and durability.• Designed to resist corrosion.• Withstand vibrations and extreme conditions.Applications: An Internal Retaining Ring ensures that the gears stay properly engaged with the sun gear and the ring gear, maintaining the desired gear ratio and transferring torque effectively.