To select an Excavator E320 track chain or track link, verify the machine’s exact model and serial number, undercarriage configuration, and the dimensions of the existing components before ordering. “E320” alone may not identify a single interchangeable undercarriage, and a part that looks similar can differ in pitch, link geometry, pin and bushing details, or shoe attachment. Use the machine’s parts information and physical measurements together, then confirm the match with your supplier. This guide explains what to check, how to approach replacement, and what information to provide when requesting a quotation from Zhonghai Jiuchuan.
This guide is for equipment owners, maintenance teams, parts distributors, and procurement professionals sourcing track chain assemblies or individual track links for an excavator identified as an E320. It is useful when planning a repair, comparing supplier quotations, or checking whether a replacement assembly is suitable for a specific machine. It is not a substitute for the machine’s service manual or a confirmed parts-catalogue lookup. If the machine has been modified or its undercarriage components have been changed before, verify the installed configuration rather than relying on model name alone.
A track chain is a connected series of links, pins, and bushings that supports the track shoes and travels around the undercarriage. The track links engage with the sprocket, while pins and bushings form the joints that allow the chain to articulate. Track shoes attach to the links and provide the contact surface for the ground. These parts work as a system with the sprocket, rollers, idler, and track tensioning components, so replacement decisions should consider the surrounding undercarriage.
A complete chain assembly can be appropriate when wear is widespread, multiple joints are damaged, or a repair plan calls for replacing the chain as a unit. Replacing an individual link may be considered when damage is localized and the remaining chain is suitable for continued service, but the replacement must match the chain’s dimensions and joint design. Confirm whether the required product includes pins and bushings, and whether shoes or a master link are included. These inclusions vary by supplier and quotation, so request a clear scope before comparing prices.
Start with the machine identification plate and record the full model designation and serial number. Also note the machine year or production range if available, because model names can cover more than one configuration. Check the parts catalogue or existing service records for an undercarriage part number, and tell the supplier whether the assembly is original or has previously been replaced. Where records are unavailable, provide clear photographs and measured details for technical review.
Do not assume that visual similarity proves fitment. Ask the supplier to compare the chain pitch, link height and width, pin and bushing arrangement, shoe bolt pattern, and the number of links required for the confirmed configuration. If measuring an installed chain, measure pitch across four consecutive pin centers and record the total in millimeters; dividing by the three intervals gives an average pitch for comparison. This is a screening measurement, not a substitute for the machine’s specified dimensions or a supplier’s fitment confirmation.
Record the track shoe width in millimeters and confirm the shoe type and bolt pattern if you are reusing or replacing shoes. Check the link count on each side rather than assuming both sides have the same replacement history. For procurement, identify two track assemblies—left and right—and confirm whether the supplier quotes them separately or as a pair. The number of assemblies is a purchasing check, not a statement that all E320 machines use identical parts.
Track chains and links are selected by design and application, not by a material label alone. Ask what material and heat-treatment information the supplier can provide for the offered component, and request documentation relevant to your purchasing requirements. Do not treat broad descriptions such as “heavy duty” as a measurable specification. Compare the offered design and documented details against the operating conditions and the machine’s confirmed parts requirements.
Consider where and how the excavator operates. Abrasive ground, frequent turning, high-impact work, and long travel distances can influence wear patterns across the undercarriage, but the effect depends on the machine, maintenance, and site conditions. Tell the supplier whether the machine mainly works on soft ground, rock, demolition sites, or mixed terrain. That context helps frame a parts discussion, but it does not replace dimension and part-number verification.
Link to Zhonghai Jiuchuan
The first decision is whether the repair scope is an individual component or a complete chain. Base this on inspection findings and the maintenance plan, not on price alone. The second is whether existing shoes and connecting hardware can be reused; confirm their condition and compatibility with the replacement chain. The third is whether the supplier can verify the exact fitment and explain any differences between the proposed part and the reference part number.
Track-chain pricing depends on the confirmed part configuration, order quantity, included components, packaging, and delivery destination. Minimum order quantity and production or dispatch lead time are supplier-specific, so request these details in writing rather than relying on a general estimate. A quotation should make clear whether the price covers one side or a pair, whether pins and bushings are included, and what shipping terms apply. If your project has a required delivery date, share it when requesting the quote and ask the supplier to confirm the applicable schedule.
When comparing offers, use the same technical scope for each supplier. A lower price may reflect different included items, an unconfirmed fitment, or different delivery terms, so compare like for like. Ask what inspection or product documentation is available and how packaging is arranged for transport. Do not assume that a quoted lead time, warranty, or compliance document is standard unless it is stated in the supplier’s offer.
For a B2B enquiry to Zhonghai Jiuchuan, provide the machine identification, reference part number if available, required quantity, destination, and requested delivery window. Include photographs of the chain and undercarriage, plus measurements in millimeters where you can obtain them safely and accurately. Zhonghai Jiuchuan can review the information provided and clarify the product scope and fitment details available for the enquiry. Request written confirmation before placing an order, particularly when replacing only one side or one link.
A frequent mistake is ordering from “E320” alone without checking the serial number or undercarriage configuration. Another is comparing only the outer appearance while overlooking pitch, link profile, pin and bushing design, link count, or shoe attachment. Buyers can also overlook the condition of the sprocket and other running gear, even though the chain operates in conjunction with these components. Use the service manual and a qualified inspection to assess the full undercarriage before deciding on repair scope.
Do not estimate wear limits or set track tension from a generic online figure when the machine’s specified procedure is available. Measurements, adjustment methods, and replacement criteria can vary by machine configuration and service guidance. If a dimension or part number cannot be confirmed, pause the order and request technical review rather than guessing. This approach helps reduce avoidable fitment and installation problems.
The correct Excavator E320 track chain or track link is the one confirmed for the specific machine and installed undercarriage—not simply a part described as “E320.” Verify the serial number, part reference, chain dimensions, link count, shoe configuration, and included components before purchasing. Use measured information as a cross-check and have the fitment confirmed by the supplier. For replacement work, inspect related undercarriage parts and follow the manufacturer’s service and safety procedures.
To move forward, gather the machine details, photographs, measurements, quantity, and destination, then send them to Zhonghai Jiuchuan for a fitment and quotation review. Ask for written confirmation of the proposed configuration, inclusions, MOQ, lead time, and delivery terms. If any information is uncertain, identify it clearly in the enquiry so it can be checked before an order is placed.
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