Suspending swing arm assembly

The invention discloses a suspending swing arm assembly, and belongs to the technical field of auto spare parts. The suspending swing arm assembly comprises a ball pin, internal and external ball seats and a housing which are sequentially arranged in match from inside to outside; a dustproof cover is arranged between the external wall of the ball pin and the housing, and the external wall of the ball pin is extended out of the housing; the internal ball seat is made of resin; the ball pin, the external ball seat and the housing are all manufactured by forging aluminum-silicon-magnesium alloy; and concave grooves are formed in the internal wall of the internal ball seat. The suspending swing arm assembly has the advantages of capability of automatically compensating the abrasion loss, high strength of extension and capability of achieving self-lubricating effect; and with the adoption of the suspending swing arm assembly, relatively high safety and relatively high riding comfort can be kept when a vehicle runs in various road conditions.