A method for manufacturing a ferrous rotational member including the steps of turning a first portion of the friction surface at a sufficient feed rate to provide a first deformed layer on the first portion of the friction surface; fine turning a second portion of the friction surface at a sufficient feed rate to provide a second deformed layer on the second portion of the friction surface; burnishing the first and second portions of the friction surface to achieve a predetermined roughness; and nitrocarburizing the rotational member at a time and temperature sufficient for the diffusion of nitrogen atoms and carbon atoms through the deformed layer to form hardened casings having variable thickness. The ferrous rotational member may be that of a brake rotor having a hub surface and a friction surface, where the hub surface and friction surface have a variable thickness hardened casing.

A method for manufacturing a ferrous rotational member including the steps of turning a first portion of the friction surface at a sufficient feed rate to provide a first deformed layer on the first portion of the friction surface; fine turning a second portion of the friction surface at a sufficient feed rate to provide a second deformed layer on the second portion of the friction surface; burnishing the first and second portions of the friction surface to achieve a predetermined roughness; and nitrocarburizing the rotational member at a time and temperature sufficient for the diffusion of nitrogen atoms and carbon atoms through the deformed layer to form hardened casings having variable thickness. The ferrous rotational member may be that of a brake rotor having a hub surface and a friction surface, where the hub surface and friction surface have a variable thickness hardened casing.

A hoist is provided with a braking mechanism comprising: a motor cover that is provided with an outer wall which is provided such that the inner diameter of an inner peripheral portion thereof increases with proximity to one side in the axial direction from the other side; a drum member that is provided with an outer peripheral portion which is located radially inward of the inner peripheral portion of the outer wall and which faces the inner peripheral portion; and a brake shoe that is mounted on the outer peripheral portion. The inner peripheral portion is provided with a blast-treated portion which is blast-treated upon impact by media which contains large amounts of sharp edges among media which contains large amounts of sharp edges and media which contains large amounts of non-sharp edges.

A hoist is provided with a braking mechanism comprising: a motor cover that is provided with an outer wall which is provided such that the inner diameter of an inner peripheral portion thereof increases with proximity to one side in the axial direction from the other side; a drum member that is provided with an outer peripheral portion which is located radially inward of the inner peripheral portion of the outer wall and which faces the inner peripheral portion; and a brake shoe that is mounted on the outer peripheral portion. The inner peripheral portion is provided with a blast-treated portion which is blast-treated upon impact by media which contains large amounts of sharp edges among media which contains large amounts of sharp edges and media which contains large amounts of non-sharp edges.

A brake drum for a drum brake, in particular of a motor vehicle, includes a cylindrical jacket and a support pot which axially adjoins the jacket and which has a hub ring portion to be secured to a wheel hub. The monolithic brake drum is formed at least in part of a fiber-reinforced plastic.

A brake drum for a drum brake, in particular of a motor vehicle, includes a cylindrical jacket and a support pot which axially adjoins the jacket and which has a hub ring portion to be secured to a wheel hub. The monolithic brake drum is formed at least in part of a fiber-reinforced plastic.

A clip for a rotor disk of a brake assembly, the clip comprising: a first half comprising a first sheet metal strip having a body portion and a first end and a second end bent in a first direction relative to the body portion; and a second half comprising a second sheet metal strip having a body portion having a length the same as the length of the body portion of the first sheet metal strip, the second sheet metal strip having a first end and a second end bent in a second direction, opposite to the first direction, relative to the body portion of the second sheet metal strip; and wherein one of the first end of the first sheet metal strip and the first end of the second sheet metal strip is provided with a first pin protruding from the end.

A friction disk may comprise a first wear surface formed from a carbon fiber-carbon matrix composite material. A wear plug may be located in an opening defined by the carbon fiber-carbon matrix composite material. The wear plug may extend axially from the wear surface. The wear plug may comprise a rod or a particulate.

An apparatus for a drum brake assembly having a brake drum includes a brake shoe and a pivot lever connected to the brake shoe. The pivot lever has a first condition movable with the brake shoe to apply braking force to the brake drum and a second condition deflected relative to the brake shoe for absorbing brake drum contraction forces.

An apparatus for a drum brake assembly having a brake drum includes a brake shoe and a pivot lever connected to the brake shoe. The pivot lever has a first condition movable with the brake shoe to apply braking force to the brake drum and a second condition deflected relative to the brake shoe for absorbing brake drum contraction forces.