A caliper guide assembly for a heavy vehicle disc brake. The caliper guide assembly may include a wear sensor arranged to detect the position of a guide pin in relation to a guide bore. The guide pin and a guide surface may have different cross sectional profiles to define at least one void therebetween. The wear sensor may be at least partially accommodated within the void.

A rotationally symmetrical bellows has a first end ring and a second end ring with a smaller diameter, and multiple folds, which in a relaxed position each have two flanks running in opposite directions with respect to one another while forming a bend. The flanks extend approximately parallel to an axis of rotation of the bellows. The rotationally symmetrical bellows is designed such that in a relaxed position of the bellows, the second end ring is arranged at an axial distance to the first end ring.

Disclosed are a boot for a caliper brake and the caliper brake including the same. The boot, which is provided to be installed on a guide rod to allow a caliper housing to be slidably coupled to a carrier during braking, includes a first coupling part coupled to the guide rod at one end thereof, and a second coupling part coupled to the carrier at the other end thereof, wherein the second coupling part is provided with an elastic protrusion provided to be in contact with an outer surface of the guide rod so that a reaction force is generated by the guide rod moving together with the caliper housing during braking.

A brake caliper for a disc brake having a caliper body, a brake pad and at least one retraction device of the brake pad from a braking disc is described. The device is configured to retract the brake pad from at least one of opposite braking surfaces delimited by the braking disc. The caliper body delimits a first pad abutment surface to delimit a tapered space with the braking surface of the braking disc, the first pad abutment surface being oriented so that, during the braking action, the surface guides the brake pad wedging in the tapered space. The brake pad delimits a retraction surface, inclined in a non-orthogonal direction with respect to the pad plane and oriented so that, during the retraction action, the brake pad is guided partially outside of the tapered space.

A brake assembly having a guide pin assembly that slidably couples a brake caliper to a brake carrier. The guide pin assembly may include a resilient member that extends between a bushing and a sleeve. The sleeve may be mounted to the brake carrier. The brake caliper may be slidable along the bushing.

A disc brake guide assembly having a guide bush, a closure, and a stop. The guide bush may be mountable in a through bore of a support. The closure may be a barrier to the ingress of foreign matter into the through bore. The stop may restrict axial displacement of the guide bush.

A first caliper housing may include a first caliper housing including an inlet through which oil enters and one or more first flow paths connected to the inlet and allowing oil to pass therethrough, a second caliper housing disposed opposite to the first caliper housing, and including one or more second flow paths allowing oil to pass therethrough and connected to one or more cylinders, respectively, a first coupling part coupling the first caliper housing and the second caliper housing, and one or more second coupling parts coupling the first caliper housing and the second caliper housing, and respectively including a connecting flow path portion connecting a corresponding one of the first flow path and a corresponding one of the second flow paths so that oil passes therethrough.

In accordance with one embodiment of the present disclosure, a guide pin allowing a caliper housing to be slidably coupled to a carrier during braking, includes a cylindrical guide shaft portion; and a head portion provided at one end of the guide shaft portion in an enlarged diameter form, and the guide shaft portion is provided in a form in which at least a portion of a center thereof is hollow in an axial direction to form a hollow portion.

A brake pad retracting device is disclosed. An example vehicle braking system comprising a rotor, and a caliper including a brake pad slidably engaged with a guide pin, and a coil spring through which the guide pin extends, the coil spring having a first end and a second end, the first end having a first inner diameter sized to enable the first end to move freely over a surface of the guide pin, the first end to engage the brake pad to urge the brake pad away from the rotor, and the second end having a second inner diameter sized to frictionally engage the surface of the guide pin, the first inner diameter greater than the second inner diameter.

This motor device is provided with, e.g.: a motor having a motor case and a shaft supported by the motor case so as to be capable of rotating about a rotation center; a housing in which the motor is housed; and an elastic member interposed between the motor case and the housing. A first concave part in communication with both sides of the elastic member in the axial direction is provided between the outer peripheral surface of the elastic member and a cylindrical surface of the housing.