Guangzhou Hydomi Machinery Co.,LTD
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Hitachi Excavator 9184497 Swing Bearing ZX120 Slew Ring
The slewing ring (also known as a slewing bearing or turntable bearing) is a critical component in excavators, enabling 360-degree rotation between the upper structure (house) and the undercarriage. It supports axial, radial, and moment loads while ensuring smooth movement for digging, lifting, and material handling operations.
Facilitates full rotation of the excavator’s upper structure.
Distributes dynamic and static loads from the boom, arm, and bucket.
Ensures stability during operation.
Transmits hydraulic and electrical signals between upper/lower sections (in advanced models)
