I use this guide to help buyers determine whether an Excavator E320 track chain or track link will fit their machine, whether replacement is necessary, and what information to send a supplier before ordering. The safest answer is that “E320” alone is not enough to confirm compatibility. I need the exact machine series, serial number, undercarriage configuration, link count, pitch, track shoe width, and the condition of the sprocket and rollers before recommending a replacement chain or individual track link.
For a practical starting point, compare the old assembly with the supplier’s drawing and parts reference rather than relying only on the excavator model name. A complete track chain normally includes connected links, pins, bushings, and seals where a sealed-and-lubricated design is used; a track link is one individual rail component within that chain. If the links are stretched, cracked, heavily worn, or no longer engage correctly with the sprocket, replacing the complete chain may be more reliable than installing one new link.
This guide is intended for fleet managers, equipment dealers, repair workshops, purchasing teams, and contractors sourcing replacement undercarriage parts for an E320 excavator. It is also useful when a buyer has a used track chain but no reliable part number. I recommend using the guide as a pre-order checklist, not as a substitute for the machine manufacturer’s technical documentation or a physical fitment inspection.
Compatibility depends on more than the excavator’s external model name. Different production years, serial number ranges, working configurations, and undercarriage options can use different track chain dimensions or component arrangements. A supplier must therefore compare the machine identification plate, existing track assembly, and required operating configuration before confirming a part.
A track link can be suitable in shape but still incompatible if its pitch, pin bore, bushing position, or shoe-bolt pattern does not match the remaining undercarriage. I therefore treat a track link as part of a complete system rather than an isolated steel component. When only one or two links are damaged, a partial repair may be possible, but the surrounding links and pins must be checked first.
Most replacement track chains are produced from alloy steel selected for strength, impact resistance, and wear performance. The final specification may include heat treatment, machining requirements, seal arrangement, and compatibility with standard or heavy-duty track shoes. I do not recommend choosing a material only by a general label such as “high-strength steel”; the supplier should explain the product specification and inspection process available for the requested part.
| Replacement option | When it may be considered | Important check |
|---|---|---|
| Complete track chain | Widespread wear, stretched joints, multiple damaged links, or poor sprocket engagement | Match chain dimensions, link count, shoe width, and machine serial range |
| Track chain assembly without shoes | Existing shoes remain serviceable and the bolt pattern is compatible | Inspect shoe holes, bolts, and mating surfaces before reuse |
| Individual track link or repair section | Localized damage with otherwise acceptable chain condition | Confirm identical dimensions and assess adjacent pins, bushings, and links |
As an example of the information that should be recorded, a buyer may measure a pitch of 171 mm, a pin diameter of 85 mm, and a shoe width of 600 mm. These figures are examples of measurement fields, not confirmed E320 specifications, and must never be treated as a final ordering reference. I require the actual measurements from the buyer or a verified drawing before confirming compatibility.
Record the complete model designation, serial number, production information if available, and whether the machine has a standard, long-reach, or other specialized configuration. Photograph the identification plate and both sides of the existing undercarriage. This evidence helps distinguish similar excavator names that may use different track assemblies.
Count the links on one side and measure the shoe width, link pitch, overall link height, pin diameter, and relevant hole spacing. Measurements should be taken from clean surfaces with suitable tools, because accumulated soil or worn edges can distort the result. I also ask for clear photographs of the link profile, pin ends, bushing surfaces, sprocket teeth, and shoe bolts.
Look for cracked links, loose or missing hardware, abnormal pin movement, severe bushing wear, and uneven wear across the chain. A chain that has elongated can cause poor sprocket engagement even when individual links appear intact. If the sprocket teeth are pointed, hooked, or noticeably worn, replacing only the chain may shorten the service life of the new component.
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Compare the supplier’s drawing with the existing chain and confirm link count, pitch, dimensions, shoe compatibility, seal configuration, and expected installation method. I recommend requesting written confirmation that the proposed part is intended for the stated serial-number range or that it matches the supplied measurements. Do not approve an order based solely on a product photo or a broad description such as “E320 track chain.”
The first decision is whether the required part is a complete track chain, a chain assembly without shoes, or an individual track link. The second is whether the current sprocket, rollers, front idler, and track adjuster are sufficiently serviceable to work with the replacement. The third is whether the job requires a direct replacement or a different configuration for a particular ground condition.
Operating conditions also matter. Rocky sites, demolition work, abrasive soil, and high-hour use may justify discussing a heavier-duty configuration, while lighter applications may prioritize procurement cost and availability. I use these conditions as selection factors, but I avoid promising a specific service life because wear depends on operating technique, maintenance, soil, tension, load, and the condition of mating components.
Track chain pricing is influenced by chain length, link count, steel and heat-treatment requirements, seals, machining, shoe inclusion, packaging, and order quantity. A buyer should request separate pricing for one side and a complete pair when both sides are being considered. For budgeting, provide the required quantity in units—for example, 1 complete chain, 2 complete chains, or 48 individual links—rather than using an unclear phrase such as “one set.”
Minimum order quantity and lead time vary according to stock status and whether the product is standard or customized. Before purchase, I suggest confirming production lead time in calendar days, inspection timing, packing method, shipping terms, and the documents supplied with the order. A supplier should state these conditions clearly instead of presenting an unqualified delivery promise.
At Zhonghai Jiuchuan, I recommend that buyers send the E320 identification information, photographs, measurements, desired quantity, operating environment, and destination before asking for a final quotation. Our team can then review whether a complete track chain or individual track link is the more appropriate sourcing route. Where the available information is incomplete, I prefer to identify the uncertainty and request verification rather than make an unsupported fitment claim.
One frequent mistake is ordering by excavator model only, without checking the serial number or undercarriage dimensions. Another is replacing a damaged link while leaving a severely worn sprocket in service. Buyers also sometimes compare prices without confirming whether the quotation includes pins, bushings, seals, shoes, installation requirements, and export packaging.
Incorrect track tension is another practical risk after installation. Tension should be adjusted according to the excavator manufacturer’s service guidance and the actual working conditions, not by copying an unrelated machine’s setting. After installation, inspect chain tracking, shoe bolts, sprocket engagement, and unusual noise during controlled operation.
To confirm Excavator E320 track chain track link compatibility, I need more than the word “E320.” I need the precise machine identification, existing chain measurements, link count, shoe configuration, component condition, and application details. A complete chain is generally the safer consideration when wear is distributed across the assembly, while an individual track link may suit localized damage only when the surrounding components remain compatible and serviceable.
The next step is to prepare photographs, measurements, and the required quantity, then request a written drawing-based review from a qualified supplier. Zhonghai Jiuchuan can support the evaluation of track chain and track link requirements for export purchasing, including configuration clarification, quotation preparation, and shipment coordination. Contact our B2B team with your E320 details so we can help you move from a general model reference to a properly verified replacement proposal.
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