A vehicle disc brake assembly includes a brake caliper. The brake caliper has a lug through which a bore extends, the bore having an axis. A guide rod fastener extends through the bore and is secured to a guide rod. An elastic bushing is in the bore between the lug and the guide rod fastener, wherein a circumference of the bushing contacts the lug. A radial clearance is between the lug and the guide rod fastener. The radial clearance is perpendicular to the axis.

A guide pin, for a disc brake assembly, comprises a head portion and a stem. The stem extends from the head portion along an axis and has a circular cross section, a first stem portion, and a second stem portion. The first stem portion is adjacent a tip of the stem. The second stem portion is between the first portion and the head portion. The first stem portion has a first radius from the axis and the second stem portion has a second radius from the axis. The second radius is less than the first radius. A surface is on the first and second stem portions. A distance is from a plane to the surface. The plane is parallel to the surface and the axis is in the plane. The distance is less than the second radius.

A disk brake includes a mounting member (2) having a pair of arms (2A) formed to extend over the outer periphery of a disk (1), the mounting member being secured to a non-rotating part of a vehicle, a caliper (3) provided on the mounting member (2) movably in the axial direction of the disk (1), a pair of pin holes (2C) provided in the arms (2A), respectively, of the mounting member (2) to extend in the axial direction of the disk (1), a pair of sliding pins (6) provided at the opposite ends of the caliper (3) to slide in the pin holes (2C), respectively, and a pair of pads (10) movably attached to the mounting member (2) and pressed against the opposite sides, respectively, of the disk (1) by the caliper (3). At least one arm (2A) of the arms (2A) of the mounting member (2) is provided with a warning sound generating mechanism (13) generating a warning sound for wear detection according to displacement of the sliding pin (6) relative to the arm (2A) when the pads (10) have worn by a predetermined amount.

A hub unit has a brake disc and a hub body disposed to rotate with a rim on which a tire is mounted. An internal space is formed in the hub body, wherein the brake disc is fixed in the internal space. A fixed shaft is disposed and fixed along a rotation center shaft of the hub body. A brake shoe is coupled to the fixed shaft. A brake pad is disposed to contact the brake disc. A braking force applier supplies a braking force to the hub body wherein the brake pad and the brake disc are in contact with each other.

A utility vehicle disk brake comprises a vehicle-mounted brake mount (110) that partially surrounds a brake disk, and a brake caliper (120) that is arranged on and partially covers the brake mount (110); sliding guides allow the brake caliper (120) to slide relative to the brake mount (110) perpendicularly to a friction surface of the brake disk; a first one of said sliding guides is designed as a fixed bearing, and a second one of said sliding guides is designed as a floating bearing, at least the floating bearing being designed as a slotted guide comprising a guideway (123) that runs in the sliding direction of the brake caliper (120) as well as a first guiding element (114) that is accommodated in the guideway (123).

A guide pin, for a disc brake assembly, comprises a head portion and a stem. The stem extends from the head portion along an axis and has a circular cross section, a first stem portion, and a second stem portion. The first stem portion is adjacent a tip of the stem. The second stem portion is between the first portion and the head portion. The first stem portion has a first radius from the axis and the second stem portion has a second radius from the axis. The second radius is less than the first radius. A surface is on the first and second stem portions. A distance is from a plane to the surface. The plane is parallel to the surface and the axis is in the plane. The distance is less than the second radius.

A vehicle disc brake assembly includes a brake caliper. The brake caliper has a lug through which a bore extends, the bore having an axis. A guide rod fastener extends through the bore and is secured to a guide rod. An elastic bushing is in the bore between the lug and the guide rod fastener, wherein a circumference of the bushing contacts the lug. A radial clearance is between the lug and the guide rod fastener. The radial clearance is perpendicular to the axis.

A disc brake assembly comprises an anchor bracket having at least one bore formed therein; a guide pin configured to be slidably supported in the bore and having a stem; at least one main damper configured to be disposed between the stem and an interior surface of the bore and configured to bias a portion of the stem against the interior surface of the bore depending upon brake loading on the disc brake assembly; and at least one secondary damper configured to be disposed between the stem and the interior surface, wherein the secondary damper is configured to limit a contact between the stem and the interior surface depending upon brake loading on the disc brake assembly.

Floating calliper for disc brake comprising a calliper body and a bracket, wherein the calliper body is suitable for being positioned astride the disc brake, extending from an inner side to an outer side of the calliper, the bracket comprises means of attachment of the calliper for disc brake to a relative support, the calliper body sliding in relation to the bracket in an axial direction, the calliper comprising means of coupling between the calliper body and the bracket, suitable to permit the relative sliding between these parallel to the axial direction. The bracket extends only on the inner side of the calliper and delimits a first seat housing at least a first pad to exert the braking action on an inner side of the disc brake. The calliper body delimits a second seat, axially opposite the first seat, so as to house at least a second pad exerting a braking action on an outer side of the disc brake facing the outer side of the calliper. Advantageously, the coupling means comprise a guide pin and an attachment pin, the guide pin enabling and guiding a relative sliding, in the axial direction, of the calliper body in relation to the bracket and the attachment pin angularly blocking the calliper body on the bracket, preventing its rotation in relation to the guide pin, so that the calliper body is axially guided solely by the guide pin.

A disc brake for a utility vehicle includes a brake caliper which straddles a brake disc and which is held displaceably on a stationary brake carrier by two guide bars, each guide bar having a guide bushing which is connected to the brake carrier by way of a screw that is screwed into a threaded hole of the brake carrier and which is held on the brake carrier for conjoint rotation therewith. The disc brake is designed in such a way that the end face of the guide bushing bearing against the brake carrier has a peripheral projection which is pressed against the associated surface of the brake carrier.