803382159 hose assembly XCMG XE2000 excavator spare parts

XCMG XE2000 Excavator Hoses (803382159): Ensuring Flexible Transmission in the Hydraulic System

In the hydraulic system of the XE2000 large mining excavator, hose assemblies are crucial flexible channels connecting fixed pipelines and moving parts. Their performance directly affects the transmission efficiency of hydraulic power and the safety of equipment operation. XCMG’s original hose assembly (part number: 803382159) is specifically designed for the complex working conditions of this machine. With its superior high-pressure resistance, flexible layout adaptability, and robust environmental adaptability, it provides a reliable guarantee for efficient hydraulic oil transmission.

Multi-layer reinforced structure, ensuring safe high-pressure transmission

The XE2000 excavator’s hydraulic system operates at pressures up to 35MPa, with instantaneous impact pressures reaching 42MPa, placing stringent requirements on the pressure resistance of the hoses. This hose assembly features a five-layer composite reinforced structure: the inner tube is made of high-pressure resistant hydrogenated nitrile butadiene rubber (HNBR), possessing excellent oil resistance and aging resistance, and can withstand hydraulic oil corrosion for a long time; the middle layer is reinforced with two layers of high-strength galvanized steel wire using a precision cross-braiding process, with a braiding density of over 90% and a burst pressure of 105MPa, far exceeding the actual working pressure of the system; the outer layer is covered with a wear-resistant neoprene rubber protective layer with a tear strength ≥28kN/m, effectively resisting mechanical damage such as external friction and stone impact. Under high-pressure hydraulic impact conditions, the hose expansion is ≤2.5%, ensuring leak-free hydraulic oil transmission and avoiding equipment downtime and safety risks due to hose rupture.

Precise Dimension Control, Flexible Adaptation to Dynamic Needs

The frequent movement of components such as the boom and stick in the hydraulic system requires the hose to have precise length and bending performance. The 803382159 hose assembly utilizes CNC cutting and forming processes, with length tolerance controlled within ±3mm and bending radius error ≤8mm, perfectly matching the layout requirements of the XE2000 excavator’s hydraulic piping. Considering the dynamic displacement characteristics of moving parts, the hose’s minimum bending radius is optimized to 3.5 times its nominal diameter, maintaining natural bending even at maximum stroke and avoiding lifespan reduction due to excessive stretching or twisting. The hose end connectors employ an automated crimping process with a crimping torque error ≤2%, ensuring a secure connection between the connector and hose, preventing loosening under high-frequency vibration conditions and guaranteeing stable hydraulic oil transmission efficiency.

Original factory parameter matching ensures efficient system operation

As a core flexible component of the XE2000 excavator’s hydraulic system, the flow parameters and interface dimensions of this hose assembly have undergone comprehensive original factory calibration. Considering the viscosity characteristics and flow requirements of the hydraulic oil, the hose’s inner diameter accuracy is controlled within ±0.3mm, ensuring stable flow rate per unit time and reducing pressure loss by more than 10% compared to ordinary hoses. The hose and steel pipe assembly (fitter number 318307798) and connector (fitter number 803150690) have perfectly matched interface dimensions, forming a seamless hydraulic transmission network and avoiding turbulence and pressure loss caused by size incompatibility. Through whole-machine hydraulic system simulation testing, the hose assembly perfectly adapts to the flow rate changes under different working conditions, ensuring precise response of hydraulic actuators.

Precision machining process, stable and reliable performance

The machining accuracy of the hose assembly directly affects the hydraulic transmission efficiency and service life. This hose is machined using high-precision CNC equipment, with an inner bore surface roughness ≤Ra0.8μm, effectively reducing hydraulic oil flow resistance; the connector sealing surface is precision ground, with a flatness error ≤0.01mm, ensuring a tight seal with the pipeline interface. All hoses undergo 100% pressure testing (45MPa pressure holding for 5 minutes), leak detection, and burst testing to ensure no pinholes, bubbles, or other quality defects. The component also passed pulse fatigue testing (1.2 million cycles, pressure range 0-35MPa) and bending fatigue testing (600,000 cycles), demonstrating stable performance under long-term dynamic operating conditions and extending its service life by more than 70% compared to ordinary hoses.

All-environment weather resistance protection, adaptable to extreme working conditions

Extreme temperatures, dust, oil contamination, and other factors in mining environments pose severe challenges to the weather resistance of hoses. The 803382159 hose assembly has passed multiple extreme environment tests: temperature resistance range covers -45℃ to 125℃, maintaining good flexibility in low-temperature environments and showing no softening or deformation in high-temperature environments; after oil immersion testing (immersion in 1200 hours of hydraulic oil at 120℃), the volume change rate is ≤4%, and the hardness change is ≤8 Shore A; after UV aging testing (1500 hours), the outer rubber layer shows no cracking. In the dusty, high-humidity environment of mining, the outer layer of the hose is treated with an anti-dust-adhesive coating to reduce wear caused by dust adhesion and ensure stable performance over long-term use.

The XCMG XE2000 excavator hose assembly (part number 803382159) – with its multi-layered reinforced structure to withstand high-pressure transmission, precise dimensional adaptation to dynamic layouts, and all-encompassing environmental protection to extend its service life, it is an indispensable flexible transmission guarantee for the hydraulic system of large mining excavators.

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318307823 drain oil pipeline

1 318307798 1 STEEL PIPE ASSEMBLY
2 318006991 1 PIPE CLAMP ASSEMBLY
3 803164240 1 FLANGE ASSEMBLY
4 804414138 1 HOSE ASS’Y
5 803164697 1 BLIND FLANGE
6 803103777 1 CONNECTOR
7 803131927 1 CONNECTOR
8 803150690 1 CONNECTOR
9 318307802 1 PIPE CLAMP ASSEMBLY
10 318307822 1 STEEL PIPE ASSEMBLY
11 318307821 1 STEEL PIPE ASSEMBLY
12 318307819 2 CONNECTOR ASSEMBLY
13 803100741 1 CONNECTOR
14 318307815 1 STEEL PIPE ASSEMBLY
15 803382159 1 HOSE ASS’Y
16 803194411 1 HOSE ASS’Y
17 804414141 1 HOSE ASS’Y
18 803281494 1 HOSE ASS’Y
19 804414139 1 HOSE ASS’Y
20 318307812 2 CLAMP ASSEMBLY
21 318307811 1 PIPE CLAMP ASSEMBLY
22 803164234 1 FLANGE ASSEMBLY
23 318307808 1 MAIN PUMP OIL DRAIN PIPELINE

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