There is provided a brake lining for a railway vehicle that can reduce brake squeal in braking. A brake lining for a railway vehicle is used for a disc brake system of a railway vehicle. This brake lining includes a base plate, a sintered friction material, and a friction material supporting mechanism. The friction material supporting mechanism is disposed between the base plate and the sintered friction material and supports the sintered friction material in such a manner that the sintered friction material can move with respect to the base plate. The sintered friction material has a Young's modulus of 35.0 GPa or more.

A brake element for a transportation vehicle, having a base body that is planar at least in some regions, to the planar sides of which at least two build-up layers are applied in each case at least in some regions. The build-up layers form a surface which, in the mounted state of the brake element on the transportation vehicle, serves as a friction surface for a brake pad. There is a bonding zone in which both a material of the base body and a material of a build-up layer adjacent to the base body are present, wherein the bonding zone has a thickness perpendicular to an areal extent of a planar side that is less than 10 μm.

Provided is a caliper unit for a brake of a vehicle, in particular, a compact caliper unit capable of reducing a size, a weight, and a production cost of a component and improving fuel efficiency. The caliper unit for the brake includes an inner pad and an outer pad, which press both surfaces of a disc to generate braking force, a torque member fixed to a vehicle body and coupled to be movable forward and backward so that the inner pad and the outer pad press the disc, or the pressing of the inner pad and the outer pad to the disc is released, a caliper housing including a cylinder to which a brake hydraulic pressure is applied and a reaction force support part configured to press the outer pad to the disc, and a piston installed in the cylinder and moving forward and backward depending on a state of the brake hydraulic pressure applied to the cylinder to press the inner pad to the disc. Each of the inner pad and the outer pad has a circular shape, and a contact surface of the piston, which is in contact with the inner pad to press the inner pad during braking, has a circular shape.

A brake pad for a disk brake of a vehicle, in particular a rail vehicle, includes a backing plate, to which a plurality of friction units is fastened, each using a securing element supported on the rear side of the backing plate facing away from the friction unit, wherein each friction unit has, on the side of the backing plate facing away from the securing element, a friction element, which is mounted for tilting by means of a spherical-portion-shaped attachment and under the load of a spring supported on the backing plate, is designed in such a way that an annular disk is arranged between the spring and the friction element, at least some regions of said disk lying against the spring and the friction element.

A novel disc brake shim and a disc brake that can effectively suppress vibration and squeal are provided. The disc brake shim that is formed of a multilayer structure with three layers or more including at least a base material layer formed of a metal sheet, and a foamed rubber layer that is laminated on a main surface on one side of the base material layer, wherein the foamed rubber layer is an intermediate layer of the multilayer structure, and the disc brake including pad materials on both sides in an axial direction of a disc rotor, and shims on opposite sides from the disc rotor, of the pad materials adjacently, wherein each of the shims is the disc brake shim according to the present invention.

A method of making a brake pad retention plate and a brake pad retention plate is provided. The method includes upsetting a brake pad facing surface on the retention plate to form a first set of rows having a gutter, or a negative feature such as a depression in the primary plane, in the surface of the retention plate and a tooth feature on a first side of the gutter. The surface of the retention plate is upset to form a second set of rows having a gutter and a tooth feature on the second side of the gutter. The second set of rows being a single row. The second set of rows is placed adjacent to or between the first set of rows. A mechanical press is used to deform the tooth to form a base portion and a mezzanine portion extending over a portion of the gutter.

Method and plant for manufacturing braking elements such as vehicle brake pads. The plant can comprise a first station that applies an adhesive to a first face of a metallic element; a second station that applies to the first face of the metallic element a block of friction material; a checking station that verifies the presence of the adhesive by detecting the gray level of a plurality of points of at least one zone of the first face; and a processing unit that compares the gray level detected for each point with a first threshold value, counts the number of points that have a gray level that satisfies a relationship (which is a function of the threshold value,) and compares such a value with a second threshold value to discard those metallic elements for which the percentage calculated does not correspond to the second threshold value.

A fine blanking device and method for forming a friction plate with friction material layers. The fine blanking device includes an upper die, a lower die, a guide mechanism, a punch and a counter punch. Upper and lower blank holders are respectively provided at outer circumferences of the punch and the counter punch. The upper and lower blank holders are respectively provided with a buffer mechanism. Friction material powders are sintered on both sides of the base sheet. The friction material layers are trimmed and planished by hot pressing. The base sheet with the friction material layers is fixed by the upper blank holder and the lower blank holder. A tooth profile with an absolute shear fractural surface is formed. The fixing indentation of the V-shaped structure of the friction material layers is cut off for obtaining a finished friction plate product with the friction material layers.

A method of manufacturing a plurality of wear liner segments may comprise selecting a number of wear liner segments for a wear liner assembly. The wear liner assembly may be annular in shape. The number of wear liner segments may selected based on minimizing a waste portion of a textile board and/or maximizing a production capacity of a plurality of the wear liner assembly.

Provided are a joint component formed with fine recessed portions so that degradation of the flatness of a metal base body, such as a core, to which a joint object such as a friction member is joined can be reduced, a multiplate clutch device including the joint component, and a joint component manufacturing method. At a friction plate (200) as the joint component, many fine recessed portions (204) are formed at a joint surface (203) as a portion of a core (201) joined to friction members (207). The joint surface (203) is formed in a circular ring shape along a peripheral direction of the core (201), and is formed with a flatness of equal to or less than 0.15 mm. The fine recessed portions (204) are formed at the joint surface (203) such that adjacent ones of the fine recessed portions (204) do not overlap with each other and a formation density per unit area (Ua) at the joint surface (203) is uniform. The fine recessed portions (204) are formed as laser processing marks formed at the core (201) by irradiation with laser light L.