A Doosan DH500 sprocket should be selected by matching the machine’s exact configuration and the sprocket’s physical interface—not by model name alone. Before ordering, confirm the excavator’s serial number, existing sprocket part number if available, tooth count, mounting arrangement, and relevant dimensions against the replacement supplier’s drawing or fitment records. This guide explains how to check fitment, plan a replacement, and prepare the information needed for a reliable B2B quotation. If any identification detail is uncertain, share clear photographs and measurements with your supplier before purchasing.
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This guide is intended for parts distributors, equipment dealers, repair workshops, fleet maintenance teams, and procurement professionals sourcing Doosan DH500 excavator undercarriage parts. It is particularly useful when replacing a worn drive sprocket, comparing aftermarket options, or confirming details before requesting a quotation. The checks below are general procurement and fitment guidance, not a substitute for the machine’s service documentation. Use the manufacturer’s instructions and qualified technicians for machine-specific repair procedures.
The drive sprocket transfers rotation from the final drive to the track chain, helping move the crawler undercarriage. Its teeth engage with the chain, so the sprocket must match the chain’s geometry and the machine’s mounting interface. Incorrect tooth engagement or mounting dimensions can prevent installation or contribute to abnormal wear. For this reason, confirm compatibility across the complete interface rather than relying on a product title alone.
Undercarriage components wear in relation to one another. A sprocket that appears heavily worn may be paired with a stretched or worn track chain, and fitting a new sprocket without assessing the chain can affect how the parts engage. The condition of the idlers, rollers, track links, and final-drive area can also inform the replacement decision. A technician should inspect the assembly and compare any proposed replacement with the correct machine documentation.
Sprockets can differ in tooth profile, number of teeth, overall dimensions, and mounting design. Material and manufacturing details may also vary by supplier and product specification, so ask for the exact description of the offered part instead of assuming that two products are equivalent. Where available, request a technical drawing, material information, and details of any heat-treatment or quality-control process. These records help buyers compare offers on a like-for-like basis.
Start with the excavator identification plate and record the model designation and serial number exactly as shown. Check maintenance records, previous invoices, or the markings on the existing sprocket for a part number or supplier reference. If the machine has undergone repairs or component changes, do not assume that an old invoice describes the current configuration. Share these details with the supplier so they can check the proposed part against available fitment information.
When a confirmed part number is unavailable, provide a consistent set of measurements and photographs. Useful comparison points include the tooth count in teeth, the mounting-hole diameter in millimeters (mm), and the sprocket’s outside diameter in millimeters (mm). Also document the mounting-hole pattern, center opening, tooth shape, and any visible identification marks. These are identification measurements for comparison, not universal DH500 specifications; verify actual dimensions against a supplier drawing or the machine’s service information.
Photograph the sprocket from the front and side, and include close-ups of the teeth and mounting face. Place a measuring tool in the image where practical, and label the measurements so the supplier can interpret them correctly. If the sprocket is too worn to measure reliably, provide the machine serial number and any remaining part markings. Ask the supplier to confirm which details are sufficient before treating the match as final.
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Evaluate each offer against the same checklist rather than comparing price alone. Confirm the intended machine fitment, part reference, tooth profile, mounting pattern, and key dimensions. Ask whether the quoted item is supplied as an individual sprocket or as part of a larger undercarriage package, and clarify what is included in the price. Written confirmation reduces ambiguity when several similar-looking parts are available.
Ask the maintenance team to assess the chain and other undercarriage components during the replacement inspection. If related parts show wear, discuss whether replacing the sprocket alone is suitable for the machine’s condition and operating requirements. A supplier can help identify the parts that may need to be compared, but the final maintenance decision should be based on inspection and service guidance. Record the condition and measurements so future procurement can use a consistent reference.
The price of a DH500 sprocket depends on the confirmed specification, order quantity, production or stock status, packaging, and delivery destination. Minimum order quantity (MOQ) and lead time are supplier- and order-specific, so they should be confirmed in a written quotation rather than assumed from a general product listing. For a more accurate offer, provide the part reference or fitment details, requested quantity, destination, and preferred shipping terms. If a drawing or sample is needed for comparison, ask whether it affects the quotation schedule.
When comparing suppliers, distinguish between a confirmed in-stock item and a part that requires production or sourcing. Clarify the estimated dispatch date, transit arrangements, and what happens if the supplied item does not match the agreed specification. These questions help procurement teams assess the total sourcing risk, not just the unit cost. Avoid treating an estimated lead time as guaranteed unless the supplier has confirmed it in the order terms.
A capable supplier should be willing to review the information provided and explain how fitment will be verified. Ask whether they can provide a drawing or dimensional comparison and what evidence supports their compatibility recommendation. Confirm how the product will be identified and protected during packing, particularly when several similar parts are being shipped together. Request clear commercial terms and a named contact for technical or order questions.
Zhonghai Jiuchuan can support B2B buyers with sprocket fitment discussions, product sourcing, and quotation preparation based on the machine and part information supplied. To help us assess a DH500 request, send the serial number, existing part number if available, required quantity, photographs, and key measurements. We can review the information and clarify what further details are needed before confirming an offer. Final compatibility should be agreed against the relevant drawing, part reference, or verified machine information.
To select the correct Doosan DH500 sprocket, verify the machine identity, compare the sprocket’s part reference and physical interface, and assess the condition of related undercarriage components. Do not rely on the DH500 model name alone when configurations or previous repairs may affect fitment. Gather the serial number, part markings, photographs, tooth count, and key measurements before requesting a quotation. This gives suppliers a practical basis to review compatibility and helps buyers compare offers accurately.
For a fitment review or B2B quotation from Zhonghai Jiuchuan, prepare the machine details, required quantity, destination, and any available drawings or photographs. Ask for written confirmation of the offered specification, MOQ, lead time, and commercial terms before issuing a purchase order. When the information is incomplete, resolve the open fitment questions first rather than relying on an unverified assumption.
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