Track Adjuster Assembly Used on Kobelco SK200
The SK200 track adjuster maintains consistent tension in the undercarriage system, helping prevent slack, derailment, or abnormal wear. Built with a high-strength recoil spring, heavy-duty forged cylinder, and grease-adjustable mechanism, it ensures smooth travel and extended track life in demanding excavation jobs.
| Cylinder Body | Q345 / 45# Steel / 40Cr |
|---|---|
| Piston Rod | 40Cr / 42CrMo (Hard Chrome Plated) |
| Return Spring | 60Si2Mn / 65Mn Spring Steel |
| Cylinder Head / End Cap | 45# Steel / Cast Steel |
| Grease Nipple & Fittings | Carbon Steel (Zinc Plated) / Stainless Steel |
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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.
In an excavator's undercarriage, the track adjuster (tensioner assembly) plays a critical role by maintaining the right tension in the track chain. This keeps the track shoes aligned, reduces unnecessary stress on the idler and rollers, and prevents derailment during high-load or rough-terrain operation.
For the Kobelco SK200, a robust tensioner ensures optimal power transfer, smoother maneuverability, and reduced component wear—especially in long-hour digging, climbing, or trenching jobs.
Structure Diagram & Cross-Sectional Sketch Descriptions
We provide two technical illustrations for clarity:
Assembly Structure Diagram
- Recoil Spring – Made from 60Si2Mn spring steel, offering high energy return and fatigue resistance
- Forged Cylinder Housing – Heat-treated to resist deformation and shock loads
- Grease Chamber & Fitting – Allows quick tension adjustment via grease gun
- Yoke/Bracket Interface – Securely connects to the idler wheel to translate spring force into track tension
Cross-Sectional Sketch
- Reveals the internal grease mechanism, including a pressure plunger that gradually tightens the track as grease fills the chamber
- Shows the sealing components that prevent leakage under pressure and during vibration
- Highlights contact zones engineered to resist fatigue, abrasion, and hydraulic shock
Manufacturing and Material Details
To ensure durability in the field, each component of the SK200 tensioner assembly is manufactured with care:
- Recoil Spring: 60Si2Mn or equivalent, shot-peened and heat-treated for elasticity and fatigue strength
- Cylinder & Yoke: Forged 45# or 40Cr steel, surface hardened (HRC 48–55)
- Seal Kit: High-performance nitrile or Viton sealing elements for pressure retention
- Finish: Anti-corrosion paint or electroplating to withstand muddy, wet, or acidic environments
- Final QC: Pressure testing, surface inspection, and dimensional checks before packing
OEM Undercarriage Parts for Kobelco Excavator
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| KOBELCO | SK30 | SK35 | SK40 | SK45 | SK55 | SK60 | SK60-8 | SK60-10 |
| SK75 | SK100 | SK120 | SK120-5 | SK120-6 | SK130 | SK135 | SK135SR | |
| SK135SR-2 | SK140 | SK140SR | SK200 | SK200-3 | SK200-5 | SK200-6 | SK200-8 | |
| SK200-10 | SK210 | SK210-8 | SK210LC | SK220 | SK230 | SK230LC | SK250 | |
| SK250-8 | SK260 | SK260LC | SK270 | SK300 | SK300-6 | SK300-8 | SK320 | |
| SK330 | SK330-6 | SK350 | SK350-8 | SK350LC | SK380 | SK400 | SK450 | |
| SK480 | SK480-8 | SK485 | SK500 | SK500LC | SK850 | SK850LC | ||
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Compatible Models & Part Numbers
Our SK200 track adjuster fits:
Kobelco SK200-1 / SK200-3 / SK200-6 / SK200-8 / SK200LC
Compatible with many SK210, SK220 variants sharing undercarriage geometry
Common OEM Reference Numbers (please verify):
- YN40D00004F1
- YN40D00005F1
- YN40D00006F1
- LC40D00007F1
If unsure, simply send us your machine’s model or serial number, and our team will assist with confirmation.
Why Choose Our SK200 Track Adjuster?
- OEM-Level Accuracy – Matches factory dimensions for direct installation
- Reliable Spring Force – Maintains track tension even on slopes and uneven terrain
- Easy On-Site Adjustment – Grease-injection fitting for quick pressure setting
- Corrosion Resistance – Tough coating resists rust, oil, and water
- Pre-Shipment Support – We provide photos and video verification before dispatch
- OEM/ODM Branding Available – We support logo engraving, custom labels, and packaging for distributors
Application in Real Working Conditions
The SK200 tensioner assembly is built for high-demand operations such as:
- Construction on gravel or rock
- Earthmoving and trenching in muddy terrain
- Demolition or forestry clearance
- Extended-site operations requiring stability and uptime
Its sealed and durable construction makes it a low-maintenance, high-reliability solution for operators seeking uninterrupted workflow.
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.
