The present invention concerns the field of vehicle technology and industrial-plant technology and relates to a brake disc provided with protection from wear and corrosion and to a method for production thereof. The known solutions have the disadvantage that the coating for providing protection from corrosion and wear is applied to the frictional surfaces of the brake disc and is rubbed off straight away during the first braking operations. The present invention addresses the problem of providing a brake disc that has improved and durable protection from corrosion and wear. The significantly improved properties of the brake disc in terms of protection from corrosion and wear are achieved according to the invention by at least the region of the frictional surfaces (2) having an AlSi-based diffusion layer (3), which has a layer thickness of 0.1 mm to 0.6 mm and is formed in the process of interaction with the steel or grey cast iron of the metal main body (1). The brake disc according to the invention can be used for example in vehicles or as a braking system for industrial brakes or in wind turbines.

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 friction material composition that enables a friction material, which contains no copper or contains not more than 0.5 mass % of copper, to maintain sufficient friction coefficient in fade conditions at high speed such that brake temperature rises abnormally by repeated rapid braking at deceleration of 0.8 G from a vehicle speed of 200 km/h, is provided. A friction material obtained by molding the friction material composition is also provided. The friction material composition contains a binder, an organic filler, an inorganic filler, and a fibrous base material, and the friction material composition contains no copper as an element or contains not more than 0.5 mass % of copper, and also contains 2 to 5 mass % of steel fibers that have fiber lengths of 800 μm or more.

A brake disc for a bicycle comprising a first component made of a first material and having a braking track configured to cooperate with brake pads. A second component is made of a second material and having (i) a radially inner annular portion for coupling with a hub of a bicycle wheel and (ii) a plurality of radially outer portions for connecting to said first component at a respective plurality of connection portions of said first component. The first component further comprises a radially inner annular portion connected to said braking track, and the brake disc comprises axial locking members active on the radially inner annular portions of the first and of the second component to keep said radially inner annular portions of the first (30) and of the second component under mutual pressure.

A brake disc having a first component made of a first material, a braking track configured to cooperate with brake pads, and a second component made of a second material and having (i) a radially inner annular portion for coupling with a hub of a bicycle wheel and (ii) a plurality of radially outer portions for connecting to said first component at a respective plurality of connection portions of said first component. The first component comprises a plurality of connection arms that extend from said braking track towards said predetermined rotation axis (X) and that are distinct from said plurality of connection portions, wherein at least one of said connection arms of said first component and at least one of said radially outer connection portions of said second component are coupled together through at least one shape coupling.

A rotor cover is provided that includes different portions and is configured to meet requirements of each portion. The rotor cover includes a positioning portion that is positioned relative to a bicycle frame or a disc brake rotor and a cover portion that is coupled to the positioning portion to cover the disc brake rotor. The cover portion and the positioning portion include different materials with respect to one another.

The present disclosure provides a light metal structure-function dual-gradient composite brake disc or brake drum. The light metal structure-function dual-gradient composite brake disc or brake drum is made of a light metal/graded ceramic skeleton composite friction layer bearing friction and wear functions and having function (performance) gradient characteristics and a light metal bearing connection and structure functions and having structure gradient characteristics with the light metal/graded ceramic skeleton composite friction layer by integrated composite casting. Such a dual-gradient brake disc or brake drum can exert the advantages of large thermal capacity, rapid thermal dissipation, and insensitivity to cracks of the light metal, and high hardness, high shear resistance, high elastic modulus, and excellent thermal shock resistance of the graded ceramic skeleton. In addition, the light metal/graded ceramic skeleton composite friction layer can withstand higher temperatures without softening and deformation, such that a temperature during friction braking is more uniform.

An electromechanical brake actuator (2) includes a housing (1), a first housing part (3) configured as a housing flange for attaching the electromechanical brake actuator (2) to a disc brake (38), a second housing part (4) for receiving a drive (6), a third housing part (5) arranged between the first housing part (3) and the second housing part (4) and connected to the first housing part (3) and the second housing part (4), a motor (37), a gearbox (7), and a tappet (9) or a spindle for actuating a disc brake (38). The housing (1) is an aluminum die-cast formed part. The first housing part (3) and the second housing part (4) have planar contact surfaces (34, 34a) configured to receive plates of a two-plate die-casting machine during the forming process of the housing (1).

In some implementations of the current subject matter, a brake rotor can include a supporting layer applied to a friction surface of a brake rotor substrate, which can optionally include cast iron, and a coating applied over the supporting layer. The supporting layer can include a preparatory metal, and the coating can impart wear and corrosion resistant properties to the friction surface. Related systems, methods, articles of manufacture, and the like are disclosed.

A brake rotor includes a friction portion, a hat portion axially extending from the friction portion and including a top face that is axially displaced from the friction portion and a side wall that extends from the friction portion to the top face, and a nose portion which extends axially from the top face of the hat portion away from the friction portion.