JS200 JS200LC JS210LC Undercarriage Part Track Adjuster Assy for JCB Excavator
Premium aftermarket Track Adjuster Assembly for JCB 20-22-ton excavators. Provides stable tension, smooth recoil action, and long-term protection for the undercarriage system.
| 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 |
Quick Quote Request
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 Assembly for JCB JS200 / JS200LC / JS210LC / JS220LC / JS220LR is a critical undercarriage component responsible for maintaining proper chain tension throughout the machine’s operating cycle. This adjustable recoil mechanism stabilizes the track system, ensures smooth forward and reverse movement, and prevents derailment when the excavator is working on uneven ground, steep slopes, or heavy-load applications. Its design must withstand high internal pressure, strong side forces, and constant impact from rocks and soil—making material selection and sealing quality extremely important.
Material Structure & Manufacturing Process
This Track Adjuster Assy is produced using high-strength alloy steel for the cylinder and piston components to handle the continuous stress generated by track movement. Each internal surface is precision-machined and treated to resist wear, corrosion, and pressure fatigue. The rod undergoes induction hardening to maintain straightness and prevent scoring across thousands of compression and extension cycles.
A multi-stage sealing arrangement is used to maintain stable hydraulic pressure and avoid leakage caused by contaminants or abrasive dust. The spring and recoil mechanism are individually tested to ensure consistent performance under heavy loads. The heavy-wall cylinder body provides extra resistance when shock loads occur, especially during sudden changes in track tension or when operating in rocky terrain.
Performance & Working Principle
The track adjuster works together with the recoil spring and idler to regulate track chain tension. When the machine moves or the track encounters obstacles, the adjuster compensates for fluctuations by smoothly extending or retracting. This controlled movement reduces shock to the undercarriage, extends the life of the chain, idler, and rollers, and stabilizes the excavator during fast travel or heavy digging.
Consistent tensioning also reduces wear patterns and prevents the chain from running too loose or too tight—both of which can cause premature damage. The improved internal sealing and reinforced piston design ensure that the adjuster continues operating reliably even under temperature variations or frequent pressure changes.
Manufacturing Process
Each track adjuster assembly undergoes a multi-stage production and testing cycle to ensure the highest quality standards:
- Raw Material Selection – Alloy steel and spring materials are carefully chosen for chemical composition and tensile strength.
- Precision Machining – CNC machining ensures consistent dimensions and perfect piston-to-cylinder fit.
- Heat Treatment – Components are quenched and tempered to enhance hardness and toughness.
- Surface Finishing – Chrome plating and anti-corrosion coating provide long-lasting rust protection.
- Assembly & Sealing – Professional installation of seals under clean-room conditions.
- Testing & Calibration – Each unit is pressure tested and checked for leakage, spring compression, and piston travel consistency.
This manufacturing rigor ensures every track adjuster delivers OEM-level precision and reliability from the first hour of use.
Compatibility & Replacement References
This assembly is engineered for accurate fitment and direct replacement on the following models:
JCB JS200, JCB JS200L, JCB JS210LC, JCB JS220LC, JCB JS220LR
Its dimensions and structural layout fully match OEM requirements, ensuring smooth installation without modifications. Whether used for routine maintenance or complete undercarriage rebuilds, the adjuster integrates seamlessly with the machine’s original idler and track frame components.
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| JCB | JS130 | JS160 | JS200 | JS220 | JS260 | JS290 | JS330 | JS460 |
| JZ140 | 145XR | 220X | 370X | 131X | 150X | 200D | 220D | |
| 220X LC | 240D | 245XR | 260D | 305 NXT | 345 NXT | 385 NXT | ||
| 205 NXT | 215 NXT | 225 NXT | 245XR | 90Z‑2 | 81 NXT | 140 NXT | ||
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Quality Control & Durability
Every unit goes through a strict quality assurance process that includes hydraulic pressure testing, sealing performance verification, and dimensional inspection. Surface coatings protect against rust and maintain a clean interface between moving parts. The internal spring system is evaluated for elasticity retention over extended service hours to ensure it does not weaken prematurely.
The focus on stable performance makes this adjuster suitable for machines working in harsh applications such as mining, demolition, clay pits, and long-duration earthmoving operations.
Application Scenarios
This Track Adjuster Assy is widely used in environments where ground resistance and impact loads change constantly. Excavators working in deep trenching, quarrying, forestry, or long-reach applications benefit from the stabilizing force that maintains consistent track engagement. Even in wet, muddy, or abrasive terrain, the sealing system prevents contamination and preserves internal components.
Maintenance Suggestions
To maximize service life, it is important to inspect track tension regularly and keep the adjuster area clean from packed mud or debris. Operators should avoid sudden impacts that overload the recoil mechanism and prevent corrosion by maintaining proper lubrication around the moving joints. If the machine is frequently working in abrasive soil, periodic checks of the piston rod surface and seals are recommended to prevent early wear.
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.
Quick Quote Request
Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
