Abstract:
A disc brake piston (50) includes a body (52) formed from a plastic material and a cover (70) formed from a metallic material. The body (52) of the piston (50) is molded from a synthetic resin material and is generally hollow and cylindrical in shape, defining an axis and including an opened end (56) and a closed end (54). The body (52) defines an inner cylindrical surface (58) and an outer cylindrical surface (60) which extend axially from the opened end (56) toward the closed end (54). The cover (70) is formed from steel and is integrally molded to the body of the piston (50).
Abstract:
A method for producing a brake component involves providing a cast gray iron rotatable brake component where the gray iron has a carbon content between 3.4 % and 4.0 %. The brake component is subjected to an austempering heat treatment process. Then it is subjected to a re-tempering process to provide a microstructure which consists of spheroidized pearlite carbon in a matrix of bainitic and austenitic ferrite.
Abstract:
An improved structure for a brake drum adapted for use in a drum brake assembly includes a generally closed outer end, a generally axially extending cylindrical main body, and an open inner end. The closed outer end of the brake drum includes a centrally located wheel spindle opening formed therein, and a plurality of lug bolt mounting holes spaced circumferentially around the wheel spindle opening. The cylindrical main body of the brake drum includes a plurality of generally axially extending raised ribs provided on an outer surface thereof. Preferably, the ribs define at least three distinct strengthened areas on the brake drum.