Final drive arrangement for a vehicle

摘要

A final drive arrangement (10) for a vehicle includes a fixed spindle (14) which has an annular mounting flange (16) joined to an axially outwardly projecting cylindrical spindle section (18). A wheel hub (12) is mounted for rotation about said cylindrical spindle section (18) by axially inner and outer wheel bearings (20, 22). Said wheel hub (12) contains a planetary transmission (40) located outboard of said spindle (14) and includes a ring gear (64) which has a hub (84) splined to an exterior of an outer end region of said cylindrical spindle section (18) and serves as a support for an inner race of said outer wheel bearing (22). A service and park brake assembly (94) is located within said spindle (14) and includes a disk brake stack (150) which comprises interleaved rotor and stator disks (152, 154) located in an axially outer region of said cylindrical spindle section (18). An annular brake reaction plate (96) is mounted to an axially outer end face of said cylindrical spindle portion (18). Said annular brake reaction plate (96) extends radially beyond said cylindrical spindle portion (18) and has an annular, axially inwardly facing surface engaged with an annular, axially outwardly facing surface of said hub (84).