DISC BRAKE CALIPERS

摘要

A disc brake caliper having an aluminium body (10) and pair of disc brake pads (11,12) supported in the body for siiding movement towards each other under the action of actuator means (13,14) carried by the body to engage an associated brake disc when the caliper is mounted in its operation position in a vehicle. Two pairs of support surfaces (15,16) are provided on the body, one pair of surfaces supporting each respective pad against circumferential movements relative to the body when the brake is applied and the associated disc is engaged and biasing means (23) supported by the body to bias each pad into contact with its respective pair of support surfaces (15,16). The support surfaces are formed as inserts (15,16) from a metal which is harder than the body and are curved (20,21) in a radial sense so that when the brake is applied each pad tends ta<,> rotate (R) slightly about an axis parallel to the axis of rotation of the associated disc. The biasing means (23) tends to reverse this slight pad rotation when the brake is released to clear dust and dirt from between each pad (11,12) and its associated pair of support surfaces (20,21).