Excavator Center Joint Assembly Rotary Swivel Joint for Sany SY75 Digger

Sany SY75 Excavator Center Joint Assembly The center joint assembly (also called rotary swivel joint or center rotary joint) for the Sany SY75 excavator transfers hydraulic oil from the lower frame to the rotating upper structure, feeding the travel and swing circuits. This direct-fit replacement restores stable oil pressure and stops leakage caused by a worn original unit. Key Features Exact Fitment: Mounting flange and oil port layout matched to the Sany SY75 center joint.