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Part Number: 310705659. Engineered for uncompromising durability in the most demanding earthmoving environments, this premium replacement component represents the absolute pinnacle of precision manufacturing. When handling this part, you immediately notice the substantial weight and the flawlessly machined, cool metallic finish of the heavy-duty steel, signifying its readiness to endure intense operational loads. We guarantee 100% brand new condition straight from our advanced fabrication facility, ensuring top-tier assembly performance and long-term reliability for your heavy equipment fleet.
Type: T-type bushing (commonly recognized in the industry as a T-bulb or single-sided flange bushing). This specialized wear-resistant bushing for XCMG excavators is meticulously designed with an integrated single-sided flange. This specific geometric profile is essential to effectively prevent axial movement of the pin under extreme, unpredictable load conditions encountered during deep trenching or heavy lifting.
Compatible Models: Suitable for XCMG medium and large excavators XE215 series (XE215C/XE215DA), and engineered to perfectly accommodate the XE225BR models with zero modifications required. Matching bushing numbers in the same series include 310705611, 310705665, and 310705567. These are standard wear parts specifically engineered for the boom/stick hinge joint. We promise 100% precise fitment, providing an original-equipment level replacement that eliminates procurement guesswork and costly installation delays.
Material and Manufacturing Process: Constructed from a highly sophisticated High carbon steel + copper alloy bimetallic bushing. The exterior high carbon steel undergoes advanced high-frequency quenching and surface carburizing processes, which significantly elevate the surface hardness and core anti-fatigue strength to handle immense leverage. Meanwhile, the inner copper alloy layer offers a friction-reducing interface that protects the steel pin from galling. The interior features a precisely milled oil lubrication groove in the inner hole. This heavy-duty wear-resistant and impact-resistant composition is specifically formulated for heavy-duty excavator hinge points, absorbing massive kinetic energy while maintaining absolute structural integrity.
Installation Point: This pivotal component is installed at the excavator boom and bucket connector, horse head, and I-beam hinge pin position. These specific locations represent the highest-stress articulation points on the entire machine. It is custom-tailored for severe applications, including aggressive mining operations, rock quarries, and heavy earthmoving projects where equipment is constantly exposed to abrasive dirt, thick mud, and relentless heavy lifting cycles.
Core Function: The primary role of this bushing is to serve as a sacrificial, yet incredibly resilient protective barrier. It completely isolates the pin from the frame material, actively preventing direct wear and catastrophic deformation of the frame holes. By taking the brunt of the operational force and vibration, it safeguards the much more expensive structural arms of the excavator from permanent damage.
T-Flange Retaining Edge: The flange retaining edge limits movement to prevent the pin from shifting laterally during operation. This precision-machined design feature is crucial during intense, multi-directional digging and swinging operations, ensuring the entire arm assembly remains tightly aligned and highly responsive to operator inputs.
Lubrication Management: The internal geometry is meticulously designed so it stores grease efficiently to reduce friction during hinge rotation. By maintaining a constant film of grease, it significantly minimizes harsh metallic grinding noises, reduces heat generation, and actively prevents the joint from jamming during critical, time-sensitive earthmoving tasks.
Maintaining optimal performance requires vigilant monitoring of your machine's articulation joints. Proactive maintenance directly influences your Total Cost of Ownership (TCO). By replacing worn components at the correct intervals, you extend the lifespan of critical hinge points and dramatically reduce unexpected equipment downtime, optimizing overall fleet operational costs. Delaying maintenance can lead to accelerated damage to the surrounding structural integrity, turning a simple wear-part replacement into a major repair project. Please adhere to the following strict guidelines to determine when a replacement is absolutely necessary:
Internal Tolerance Loss: Bushing inner bore wear > 1.5mm, excessive clearance, severe bucket shaking. When this specific wear threshold is exceeded, the joint loses its tight tolerance. Operators will notice a distinct lack of precision, resulting in severe bucket shaking that decreases digging efficiency, increases fuel consumption, and accelerates operator fatigue.
Structural Degradation: T-flange edge cracking, bushing outer diameter loose and detached. This physical degradation indicates an imminent structural failure of the component. If the outer diameter loses its press-fit tension within the housing, it requires immediate attention to prevent lateral pin escape and potential collapse of the linkage.
Lubrication Failure: Lubricating groove worn smooth, grease leaks out quickly after application, overheating and burning the bushing. The internal grooves are essential for holding lubricant. When they wear flat, the grease simply purges out the sides rather than coating the pin. This lack of lubrication leads to rapid, localized overheating, often accompanied by the distinct smell of scorched metal, ultimately burning the bushing material and deeply scoring the expensive hinge pin.
To ensure your fleet remains fully operational with absolute minimal downtime, we have optimized our supply chain and quality assurance protocols. Leveraging digital warehousing and a vast on-hand inventory, combined with a global multi-channel logistics network, we guarantee rapid response and expedited delivery directly to your maintenance facility or job site for your most urgent emergency repair orders.
Every single unit undergoes rigorous mechanical testing before leaving our facility, fully complying with ISO 9001 quality management systems and strict OEM manufacturing standards to ensure globally unified excellence. We provide comprehensive factory mechanical test reports and a dedicated Video Outgoing-inspection to guarantee that each T-type bushing is 100% qualified and entirely free of microscopic defects. Furthermore, we stand behind our precision engineering with a solid 3-month standard warranty accompanied by professional video technical support, entirely eliminating any post-purchase installation or maintenance concerns for your engineering team.
Whether you are managing an urgent, unexpected repair for a single machine or stocking up a regional depot for scheduled maintenance, we support a highly flexible Min. Order: 1 piece policy. We also provide comprehensive OEM/ODM customization services, accommodating non-standard dimensions based on your specific engineering drawings or physical samples, alongside value-added options like exclusive corporate logo laser marking. To protect the precision-machined surfaces and critical tolerances during global transit, we utilize specialized heavy-duty Safety Packing. This industrial-grade packaging features advanced anti-rust oil treatments, moisture barriers, and impact-resistant cushioning materials to guarantee your components arrive in pristine, ready-to-install condition, regardless of the shipping distance or logistics challenges.
