Construction Equipment Excavator Parts Spring Track Adjuster Assy fit Doosan DX300
The DX300 track adjuster assembly is engineered to maintain proper track tension and absorb dynamic shock loads. With a heavy-duty cylinder, robust recoil spring, and grease-adjustable design, it delivers high performance and reliability in demanding working conditions.
| Piston Rod | 40Cr / 42CrMo (Hard Chrome Plated) |
|---|---|
| Cylinder Body | Q345 / 45# Steel / 40Cr |
| Return Spring | 60Si2Mn / 65Mn Spring Steel |
| Cylinder Head / End Cap | 45# Steel / Cast Steel |
| Grease Nipple & Fittings | Carbon Steel (Zinc Plated) / Stainless Steel |
| 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 track adjuster (also known as tension cylinder) keeps the undercarriage of the DX300 excavator running smoothly and safely. Its two main functions are:
- Maintaining Proper Track Tension – The grease-filled cylinder pushes the idler forward to reduce slack and keep the track aligned, preventing derailments and uneven wear.
- Absorbing Shock Loads – The internal recoil spring compresses and rebounds to absorb vibration and impact from tough terrain, protecting the frame and rollers from stress.
- This dual functionality ensures smoother travel, longer component life, and enhanced excavator stability.
Structural Highlights
From our structural diagram and cross-sectional diagram, we can see that our products have the following advantages:
- Reinforced recoil spring compartment with precision alignment
- Sealed grease chamber for long-term reliability
- Smooth piston stroke path to reduce internal friction
- Protective dust seals and bushings to prevent contamination
- Robust mounting brackets for secure installation in heavy-duty applications
These features combine to offer longevity, low maintenance, and high shock absorption.
Manufacturing Process & Materials
Our DX300 adjuster assembly is built using a combination of high-strength alloy steel, precise machining, and rigorous testing. Key manufacturing features include:
- Forged Cylinder Barrel: Made from 40Cr or 42CrMo steel, heat-treated for wear and pressure resistance
- Heavy-Duty Spring: Constructed from 60Si2Mn spring steel, with excellent fatigue resistance under load
- CNC-Machined Piston Rod: Ensures tight sealing, smooth travel, and corrosion resistance
- Grease-Fill Valve Assembly: Easily adjustable tension using standard maintenance tools
- Surface Finish: Treated with black oxide or anti-rust coating to endure muddy, acidic, or humid environments
Each unit undergoes pressure tests, dimension verification, and dynamic fatigue testing before delivery.
OEM Undercarriage Parts for Doosan Excavator
| 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 | DH220LC-7 | DH225LC-7 | DH280LC | DH300-5 | DH300-7 | DH300LC-7 | DH320 | |
| DH370LC-7 | DH400LC-7 | DH450 | DX55 | DX60 | DX80 | DX140LC | DX160LC | |
| DX200A | DX225LC | DX260LC | DX300LCA | DX340LC | DX420LC | DX500LC | DX800LC | |
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Compatible Models & Part Numbers
Compatible Models:
- Doosan DX300
- DX300LC, DX300LCA, and other sub-variants with compatible undercarriage
OEM Part Numbers for Reference (verify with your serial number):
- K1009659
- 130104-00059
- 130104-00060
- 130104-00052
If you're unsure about fitment, simply send us your excavator's model, serial number, or undercarriage specifications — our technical team will help you verify compatibility.
Why Choose Our DX300 Track Adjuster?
- Precision Fit for Doosan Machines – Matches original DX300 undercarriage specs
- Heavy-Duty Design – Built for 30-ton excavators working in rugged terrain
- Fast Grease Adjustment – Easy maintenance and tension correction
- Strict Quality Control – All units tested for leaks, cracks, and spring force
- OEM/ODM Branding Support – Custom logos, labels, and packaging for bulk orders
- Visual Pre-Delivery Inspection – We offer pre-shipment photos and videos for quality assurance
Built for Harsh Environments
The DX300 is designed for tough jobs, and so is our adjuster. Whether your machine is working in:
- Rock excavation or quarry work
- Construction in soft muddy ground
- Sand or clay-heavy environments
- Reinforced earth-moving and mining
Our track adjuster performs under pressure. The recoil spring reduces frame damage from impacts, and the adjustable design ensures consistent tension without frequent manual correction.
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.
