Part Number: 397-3825 Compatible Models: E307, E305.5, E306 Component Type: Hydraulic Swing Motor Assembly Product Overview This hydraulic swing motor assembly is the core rotating drive component of an excavator, compatible with the E307, E305.5, and E306 models. It delivers torque for upper-structure rotation and integrates both the motor and the reduction gear into a single unit. Precision machining ensures stable rotating output and reliable sealing performance, making it