Friction pad

摘要

A friction pad (1) having an allowable wear limit (6) which is easy to recognize visually has at least one bush (5) fitted in a hole (4) made in a backing (2) for a friction material (3). The bush (5) protrudes from the surface of the backing into the friction material and has a height of protrusion (6) corresponding.to the allowable wear limit of the pad, so that it may contact a rotor and stain it with a warning color upon wear of the friction material to the allowable wear limit. <MATH>