The Original XCMG 110901420 Slider is a dedicated boom slider for the XCMG QY25K truck crane. It is typically embedded in the joints between boom sections and is a key component ensuring stable boom extension and retraction. The QY25K crane boom has a multi-section telescopic structure, and direct metal-to-metal contact between sections generates significant friction. This slider, primarily made of wear-resistant composite materials, replaces direct metal-to-metal contact, creating a smooth friction surface during boom extension and retraction. This significantly reduces friction between boom sections during relative movement, preventing scratches and wear on the boom's metal surface and extending the boom's lifespan. The slider's precise installation position on the boom provides positioning and guidance for adjacent boom sections. When the hydraulic telescopic mechanism extends or retracts the boom, the slider limits section offset, preventing jamming or tilting. Simultaneously, its large support area reduces contact stress on the boom cylinder, minimizing vibration, lateral bending, and torsion during boom extension and retraction, resulting in smoother boom movement and meeting the precise control requirements for boom position during lifting operations. When lifting heavy objects, the boom of the QY25K crane bears enormous longitudinal and lateral loads, and the joints between boom sections easily become stress concentration points. The 110901420 slider, through its own support structure, evenly distributes the load on the boom to the contact surface of adjacent boom sections, preventing excessive local stress that could lead to weld cracking or structural deformation. Combined with the high-strength boom sections, it ensures structural stability during lifting and reduces safety risks during heavy-load operations. Cranes often operate in dusty and contaminated environments such as construction sites and ports. This slider also forms a simple protective barrier at the gaps between boom sections, reducing the entry of dust, mud, and other impurities into the boom's internal telescopic mechanisms and joints. This prevents impurities from accelerating wear and tear on internal components and protects the hydraulic lines and sealing structures inside the boom, reducing hydraulic system malfunctions caused by impurities and indirectly lowering equipment maintenance frequency and costs.