DH55 Excavator Sprocket for Doosan Mini Excavators
Durable sprocket for Doosan DH55 mini excavator, engineered with high-strength alloy steel, heat-treated for superior wear resistance. Ensures smooth track engagement and consistent power transfer in demanding compact work sites.
| Material | 50Mn/40MnB |
|---|---|
| Surface Hardness | HRC53-58,deepth: 8-12mm |
| Colors | Black or yellow or customized |
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Kinton Parts is trusted by professionals worldwide for delivering high-quality parts for excavators, bulldozers, and other construction machinery—with guaranteed performance and durability.
The sprocket on a mini excavator like the DH55 plays a critical role in transferring engine torque to the track system. This component is designed to engage directly with the track links, ensuring continuous motion, even in tight or uneven terrain. Our DH55 sprockets are optimized for durability, vibration resistance, and precise tooth alignment to reduce slippage and extend both sprocket and chain life.
Premium Materials & Integrated Heat Treatment
To meet the demands of compact yet high-output excavation, this sprocket is made using alloy steels such as 35MnB or 50Mn. The forging process ensures internal strength, while the heat treatment process hardens the working surface:
- Tooth hardness reaches HRC52–58
- Deepened hardened layer for extended wear resistance
- Inner core retains toughness to absorb shock loads
These properties make the DH55 sprocket suitable for frequent direction changes and high-load micro-digging operations.
CNC Manufacturing for Accurate Fit
Each DH55 sprocket undergoes a streamlined 6-step production process to ensure concentricity, tooth accuracy, and mounting reliability:
Tooth Rough Machining
The sprocket blank is machined on a CNC lathe or gear hobbing machine to form the basic tooth profile.
Inner Ring Installation & Precision Machining
The inner ring is inserted and the entire part is precisely machined to ensure concentricity and dimensional accuracy.
Drilling
Mounting and lubrication holes are drilled to meet the installation and functional requirements.
Tooth Grinding & Finishing
After heat treatment, the sprocket teeth are ground or polished to remove burrs and ensure smooth engagement.
Surface Cleaning
The sprocket undergoes surface cleaning, removing scale and residue, preparing it for surface treatment.
Painting & Final Coating
The sprocket is coated with durable industrial paint (available in various colors), providing corrosion resistance and a clean, professional appearance.
Each step is controlled under strict tolerances to ensure long-term performance and precise installation.
OEM Undercarriage Parts for Doosan
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| DOOSAN | DH30 | DH35 | DH50 | DH55 | DH60 | DH60-7 | DH80 | DH130 |
| DH130-2 | DH150LC-7 | DH150W-7 | DH170 | DH180 | DH200W | DH210W-7 | DH220LC | |
| DH225LC | DH280LC | DH300LC-7 | DH320 | DH450 | DX60 | DX80 | DX225LC | |
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Compatible Doosan Models
Doosan DH55 / DH55-V / DH55-5
May also be compatible with older or regional variants of the DH50 series (please confirm dimensions)
Always confirm the drawing or final drive interface. We offer free fitment consultation.
Quality Inspection & Mounting Precision
All sprockets are tested using CMM (Coordinate Measuring Machine) tools and go through tooth profile and pitch inspection. Key control points include:
- Concentricity of center bore
- Tooth spacing and engagement angle
- Bolt-hole position and finish
We ensure that each sprocket mounts smoothly and maintains alignment over long-term use.
Application Scenarios
The DH55 sprocket is ideal for compact urban and rural applications, including:
- Tight-space foundation excavation
- Pipe-laying and roadside ditching
- Orchard trenching or field maintenance
- Landscaping and demolition in confined zones
Its light-weight design does not compromise strength, making it a perfect match for versatile mini excavators.
Maintenance Tips for Longer Service Life
To maximize the lifespan of your drive sprocket:
- Regularly inspect tooth wear and pitch alignment with the track links.
- Keep the undercarriage clean to prevent mud or gravel accumulation.
- Lubricate related components and ensure proper track tension.
- Replace worn chains in time to prevent accelerated sprocket damage.
SHIPPING & DELIVERY
At Kinton Parts, we ensure reliable, worldwide shipping of parts for excavators, bulldozers, and a full range of construction machines—safe, fast, and secure.
All products are securely packed using high-quality export cartons, reinforced wooden cases, or industry-standard palletized packaging to ensure maximum protection during transit and smooth handling during unloading.
Standard orders are typically shipped within 3–5 working days, while large or customized orders are usually dispatched within 7–20 days, depending on volume and production requirements.
We offer flexible global shipping options, including:
- International sea freight for cost-effective bulk transport
- Air freight for urgent orders
- Courier delivery (DHL, FedEx, UPS) for small-volume or sample shipments
Our logistics team manages every shipment carefully, providing real-time updates and tracking information until your order arrives safely at your destination.
Need assistance choosing the best shipping method for your location and timeline? Contact our team — we’ll help you plan a smooth delivery experience.
FAQ
Q: What are your main products?
A: We supply a full range of undercarriage and wear parts for excavators, bulldozers, and other heavy equipment. Our product line includes: Track rollers, carrier rollers, front idlers, sprockets, segments, track shoes, track chains, bolt and nuts, pins and bushings, bucket teeth and adaptors, filters, seal kits, swing bearing, and hydraulic cylinder—plus other essential replacement parts.
Q: Which countries do you export to?
A: Kinton Parts exports to over 60 countries worldwide, including:
USA, Canada, UK, Germany, Russia, UAE, Indonesia, Malaysia, Thailand, India, Pakistan, Bangladesh, Sri Lanka, South Africa, Colombia, Peru, and many others.
Q: Can I order a sample?
A: Yes, we accept trial orders. For parts in stock, samples can be shipped quickly. If you have technical drawings or existing samples, we also support customized production and mold development.
Q: How can I track my order after shipping?
A: Once your order is shipped, we will provide you with all necessary tracking information based on the shipping method. For express deliveries, you’ll receive a tracking number to follow the shipment online. For air or sea freight, we’ll send you the relevant documents such as the airway bill (AWB) or bill of lading (B/L), along with the packing list and commercial invoice to help with tracking and customs clearance.
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Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
