IB bearing composites are made by impregnating reinforcing fibres with thermosetting resins to produce materials with properties or characteristics superior to those of the individual material.

Most composites are formed of two phases; Matrix and Reinforcement. The matrix is continuous phase material which is usually stiff and weaker than the reinforcement. It is used to hold the reinforcement together and distribute the load among the reinforcements. Reinforcements in the form of fibres, fabric, whiskers, or particulates are embedded in the matrix to produce the composite. They are usually stronger and stiffer than the matrix and provide the primary load-carrying capability of the composite.

IB bearing materials possess excellent wear resistance, high specific strength, good dimensional stability, durability and long-term resistance to severe chemical environments. The additions of solid friction modifiers such as PTFE and graphite enhance the wear properties and life of the materials, enabling them to be operated at higher speeds and loads.

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