BRAKE SPIDER WITH INTEGRAL PIVOT POSTS

摘要

A brake spider 12 for a brake assembly which is capable of being mounted on a heavy duty truck or trailer axle has integral pivot posts 50 to support dual web brake shoes 22. Each of the duel web brake shoes 22 has aligned open recesses 48 in adjacent ends 46 of the axially spaced webs 24 thereof. The brake spider 12 includes a central portion 14 having a hole 16 extending therethrough for receipt of the axle or spindle 18. A first end 38 of spider 12 supports a cam shaft 34 of a cam actuation means 30 and a second end 46 is axially offset from the first end 38 and includes two circumferentially spaced pairs of integrally formed pivot posts 50 each of which pair is associated with one of the dual web brake shoes. The posts 50 may be cast, may have wear resistant sleeves installed thereover, may be cylindrical or provided with a flat potion.