Abstract: Reduction in weight and simplification of structure of a pin type disc brake for a vehicle are attained by using left and right guide pins. In the past such pins been used to carrying a caliper and permit movement thereof in the axial direction of a disc to push a pair of inner and outer friction pads against both sides of the disc. In this brake disc the pins are arranged to carry the inner and outer friction pads in addition to the caliper.

Abstract: An improvement on a caliper guiding mechanism for a disc brake in which an auxiliary slide pin is arranged to be slidable in metallic contact, instead of conventional elastic contact, in the same manner as a main slide pin to an extent corresponding to a distance of a gap normally existing between a disc and each of friction pads. The invented arrangement is such that there is no difference between these slide pins in resistance to caliper sliding movement to prevent uneven wear and dragging of the friction pads. Despite of the sliding arrangement, the auxiliary slide pin is capable of absorbing a certain degree of machining error or a change in the parallel relative positions of the sliding pins caused by a torque during brake application.