803418742 central rotary connector XCMG XE2000 excavator spare parts

XCMG XE2000 Excavator Dedicated Central Rotary Connector (Part No. 803418742): Unlimited Rotation, Ensuring Continuous Transmission of Hydraulic Power

As a core connecting component of the hydraulic system for the upper and lower parts of the XCMG XE2000 heavy excavator, the central rotary connector (part number 803418742) solves the problem of hydraulic pipeline entanglement during continuous 360° rotation of the equipment with its high sealing performance and anti-rotation wear performance. It is a key spare part to ensure uninterrupted power transmission to the actuators such as the boom and bucket of the XE2000 excavator.

In terms of structure and material design, the central rotary connector adopts a multi-layer precision sealing ring assembly and a high-strength alloy shell. The shell is made of 42CrMo alloy steel through integral forging. After quenching and tempering, its tensile strength reaches 1000MPa and its yield strength exceeds 900MPa, which can withstand the radial load and axial impact during excavator rotation, preventing deformation and cracking of the shell due to uneven stress. The internal core sealing components use high-pressure resistant polytetrafluoroethylene (PTFE) composite material, combined with hydrogenated nitrile butadiene rubber (HNBR) elastomer, which can be adapted to the 35MPa working pressure of the XE2000 excavator hydraulic system, while withstanding a temperature range of -30℃ to 100℃, eliminating hydraulic oil leakage during rotation.

To address the high-frequency rotation requirements of excavators, the connector features a high-precision raceway and bearing structure, controlling the rotational resistance torque to within 5 N·m. This ensures smooth operation without jamming or abnormal noise during continuous 360° rotation of the upper structure. Simultaneously, the raceway surface undergoes nitriding treatment, achieving a hardness of HV800 or higher, improving wear resistance by 60% and effectively extending the service life of rotating components. Furthermore, the connector is pre-installed with multiple hydraulic oil passages to precisely match the multi-circuit hydraulic requirements of the XE2000 excavator for travel, digging, and rotation. The inner diameter error of the oil passages is less than 0.05 mm, ensuring stable flow in each circuit and avoiding power loss due to oil passage throttling.

Whether it’s the frequent rotation during heavy-duty excavation in mines or multi-angle operations at construction sites, the XCMG XE2000 excavator’s dedicated central rotary connector (part number 803418742) ensures continuous hydraulic power transmission with its “unlimited rotation and reliable sealing” performance, helping the equipment to achieve efficient operation and providing stable power support for the advancement of heavy engineering projects.

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318306915 rotary joint assembly XCMG XE2000 excavator spare parts

1 803418742 CENTRALROTARYCONNECTOR
2 803172014 CONNECTOR
3 803103351 CONNECTOR
4 803164697 BLINDFLANGE
5 803103777 CONNECTOR
6 318307971 STEELPIPE ASSEMBLY
7 803105338 CONNECTOR
8 803386232 ORING47.22×3.53-S
9 805139896 SCREWM16×50
10 329900304 THICKENEDFLAT WASHER
11 805006290 BOLTM16×50
12 803103798 CONNECTOR
13 803403185 CONNECTOR
14 803184017 CONNECTOR
15 803107607 CONNECTOR
16 803172186 PLUG

XCMG XE2000 excavator, central rotary connector, part number 803418742, hydraulic rotary transmission, high-pressure sealing connector, core hydraulic components of the excavator.