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Aug. 20, 2026
To replace a Hyundai R220 drive sprocket correctly, I first confirm the exact excavator model, serial number, final drive configuration, sprocket tooth profile, and matching track-chain dimensions. I then compare the existing sprocket with the replacement, inspect the track chain and idler, remove the worn component safely, install the new sprocket with the correct hardware and torque procedure, and adjust track tension according to the machine manufacturer’s service instructions. A new sprocket should not be selected by appearance alone because similar Hyundai R220 configurations may use different undercarriage arrangements.
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In this guide, I explain how I approach Hyundai R220 drive sprocket undercarriage replacement, which measurements matter, when related parts should be replaced, and what information to send a supplier. Zhonghai Jiuchuan supports excavator undercarriage sourcing by reviewing identification details, drawings, photographs, and application conditions before confirming a quotation.
This guide is intended for fleet managers, excavator repair workshops, parts distributors, contractors, and purchasing teams sourcing a Hyundai R220 drive sprocket. It is useful when a sprocket has worn teeth, poor chain engagement, abnormal noise, or visible damage. It also helps buyers plan replacement work before a machine experiences avoidable downtime.
I recommend using this information as a purchasing and inspection framework rather than as a substitute for the Hyundai service manual. Final installation procedures, fastener torque values, lifting methods, and track-adjustment requirements should be confirmed against the machine’s documented specifications and the actual serial-number configuration.
The drive sprocket is the toothed component connected to the excavator’s final drive. It transfers rotational force from the final drive into the track chain, allowing the track assembly to move the machine. The sprocket works together with the track chain, bushings, rollers, front idler, track links, and track adjuster, so wear in one component can accelerate wear in another.
When the sprocket teeth become pointed, hooked, uneven, or excessively worn, the chain may no longer seat correctly. This can contribute to climbing, skipping, increased vibration, or difficult travel, although the same symptoms may also result from incorrect track tension, worn bushings, damaged links, or final-drive problems. For that reason, I inspect the complete undercarriage before approving a sprocket-only replacement.
Hyundai R220 replacement sprockets may be supplied as individual sprockets, segmented components where applicable, or sprocket-and-bolt packages depending on the machine configuration and supplier offering. The correct choice depends on the final-drive mounting pattern, tooth geometry, chain pitch, link dimensions, and available clearance. A component that appears similar but uses a different mounting arrangement should not be forced into place.
Most heavy excavator sprockets are produced from wear-resistant steel and processed to achieve a balance between impact resistance and tooth durability. Manufacturing methods may include forging, casting, machining, and heat treatment, but the exact process should be confirmed with the supplier rather than assumed. I normally request material and heat-treatment information when the operating environment is abrasive or when the buyer has a documented service-life requirement.
The most important identification points are the excavator model and serial number, sprocket tooth count, mounting-hole pattern, pilot or center dimensions, width, offset, and chain compatibility. The buyer should also verify whether the machine uses the original final drive or a replacement unit, because a previous final-drive change can affect sprocket fitment. Photographs of the front, rear, and mounting face are often useful, but they should support—not replace—dimensional confirmation.
| Specification or inspection point | Why it matters |
|---|---|
| Tooth count and profile | Determines engagement with the track chain |
| Mounting-hole quantity and pitch circle | Confirms compatibility with the final-drive hub |
| Center bore, pilot, width, and offset | Controls fit, alignment, and clearance |
| Chain pitch and bushing dimensions | Ensures the sprocket matches the track chain |
As measurable examples, a buyer may need to record the sprocket tooth count, the mounting pattern in millimeters, and the track-chain pitch in millimeters. These values must be taken from the actual component or verified technical documentation; I do not recommend inserting generic dimensions into a purchase order. A supplier should confirm the final selection before production or shipment.
I begin by recording the Hyundai R220 model designation, machine serial number, working hours, undercarriage condition, and any previous repair history. I then compare the proposed sprocket against the removed component, focusing on tooth count, mounting holes, center dimensions, and width. If the buyer cannot provide all dimensions, clear photographs and the existing part number may help the supplier identify the correct configuration.
Before removing the sprocket, I inspect the track chain, bushings, links, rollers, idler, track guards, and final-drive area. I look for hooked sprocket teeth, thin or sharp tooth tips, loose hardware, abnormal oil leakage, cracked links, and uneven wear. If the chain bushings are heavily worn, installing a new sprocket alone may provide limited value because the worn chain can quickly damage the new tooth profile.
Replacement work should be performed on stable, level ground with the machine isolated from unintended movement. The technician should follow the excavator manufacturer’s safety procedure, use equipment rated for the component weight, and keep personnel away from suspended or unsupported assemblies. Track components are heavy, so I treat lifting, blocking, hydraulic isolation, and fastener removal as controlled maintenance tasks rather than routine visual repairs.
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After the track assembly is positioned according to the service procedure, the technician removes the relevant hardware and separates the worn sprocket from the final-drive hub. The old and new parts should be placed side by side for a dimensional and visual comparison. I check the tooth profile, pilot fit, bolt-hole alignment, contact surfaces, and any signs of shipping damage before installation.
The mounting surfaces should be clean and free from debris that could prevent proper seating. The sprocket is installed using the specified fasteners and tightening sequence, with torque values taken from reliable machine or component documentation. I do not recommend guessing torque values because incorrect tightening can lead to loose hardware, distorted mounting surfaces, or damage to the final-drive assembly.
Once the sprocket is installed, the track should be adjusted according to the Hyundai service instructions and the machine’s working conditions. The technician should rotate the track slowly, observe chain engagement, and check for interference, unusual noise, lateral movement, or abnormal resistance. A short controlled travel test followed by a reinspection can reveal installation or alignment problems before the excavator returns to production.
The first decision is whether to replace only the sprocket or to repair additional undercarriage components. If the chain, bushings, or links are significantly worn, a matched repair may be more economical than repeatedly replacing individual parts. The second decision is whether the operating environment justifies a specific wear-resistant material or heat-treatment requirement.
The third decision concerns sourcing risk. A low purchase price does not necessarily represent the lowest total cost if the part has uncertain fitment, incomplete documentation, poor packaging, or a long replacement cycle. I recommend comparing dimensional confirmation, production control, inspection records, packaging, lead time, and after-sales communication alongside the unit price.
These mistakes can create installation delays or premature wear, but the exact outcome depends on the machine condition and working environment. I therefore recommend documenting the old part with photographs and measurements before dismantling it. That record gives the supplier a clearer basis for confirmation and helps the workshop identify differences between the original and replacement components.
Pricing for a Hyundai R220 drive sprocket depends on configuration, material, manufacturing process, quantity, packaging, and inspection requirements. A standard replacement may have a different price and lead time from a custom or drawing-based production order. Buyers should also clarify whether bolts, washers, protective coating, export packaging, and inspection documents are included.
Minimum order quantity varies by supplier and production arrangement, so it should be confirmed before an order is placed. For urgent maintenance, I suggest asking for stock status, production time, packing time, and estimated dispatch timing separately rather than requesting one broad delivery promise. If the part is not immediately available, early dimensional confirmation can reduce the risk of producing the wrong configuration.
When I evaluate a supplier, I look for clear technical communication and a willingness to verify the part before quoting. The supplier should be able to review machine details, dimensions, drawings, photographs, and chain information, while explaining which data is confirmed and which remains uncertain. This approach is more reliable than accepting a catalog match without fitment review.
At Zhonghai Jiuchuan, I support B2B buyers by organizing the information needed for Hyundai R220 drive sprocket evaluation. Our team can review model and serial details, part photographs, drawings, measurements, operating conditions, quantity, and delivery requirements before recommending a sourcing route. We also support broader excavator component inquiries, including undercarriage parts and cylinder-related requirements, subject to configuration confirmation.
For a faster inquiry, send the machine model, serial number, sprocket photographs, tooth count if available, mounting dimensions, required quantity, destination, and target delivery schedule. If you are replacing the track chain or other undercarriage components at the same time, include those requirements in the same request so compatibility can be reviewed as a system. We will distinguish confirmed information from items requiring further verification.
The correct Hyundai R220 drive sprocket replacement is the one that matches the actual final-drive and track-chain configuration, not simply the excavator’s model name. I recommend confirming dimensions and serial information, inspecting the complete undercarriage, following documented installation and torque procedures, and checking track engagement after installation. These steps reduce fitment uncertainty and help prevent a new sprocket from working against worn or misaligned components.
Your next step is to collect the machine identification plate, photographs of the existing sprocket, key measurements, undercarriage condition, quantity, and delivery requirements. Send this information to Zhonghai Jiuchuan for a supplier review and quotation. With accurate identification and a complete inspection, buyers can make a more defensible replacement decision and plan maintenance with fewer avoidable delays.
The company is the world’s best Hyundai R220 Drive Sprocket Undercarriage supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.
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