What is rag joints?

Rag joints are mechanical couplings used in various types of machinery, including automobiles, tractors, and industrial equipment. They consist of a flexible disc made of natural or synthetic rubber, sandwiched between two metal flanges, and bolted securely to the shaft of the machine. The flanges are usually designed with radial or tangential slots to allow for angular misalignment between the shafts, which reduces stress and vibration. Rag joints are often used in steering systems to transmit the motion from the steering column to the steering box or rack. They are also used in drive shafts to compensate for the misalignment between the engine and the rear axle. Rag joints require periodic inspection and maintenance, as the rubber disc can wear out or become damaged, leading to increased vibration and potential failure of the machinery.