JCB Track Adjust Assembly – Factory Direct Manufacturer
Dingtai manufactures JCB track adjust assemblies, hydraulic cylinders engineered to maintain optimal track tension in excavator undercarriage systems under continuous heavy loading conditions.
We operate factory-direct with comprehensive OEM manufacturing services, supplying replacement track adjusters to distributors and equipment fleets across global markets worldwide.
Defective tensioners cause premature track wear, derailment, and costly downtime. Our assemblies deliver consistent, leak-free pressure retention under extreme cyclic loading and harsh site conditions.
With over 20 years of manufacturing experience, Dingtai holds ISO9001 certification and SGS-verified material traceability, ensuring every batch meets international quality standards consistently.
Each unit features 35MnB alloy steel cylinder bodies, induction-hardened chrome-plated rods achieving HRC 50-55, and precision-ground internal bores for reliable sealing integrity.
Core Selling Points
- 20+ Years Experience – Dingtai has manufactured heavy machinery undercarriage components since 2003, supplying verified quality parts to construction firms and equipment dealers across 50+ countries.
- Premium 35MnB Material – Our track adjust cylinders use 35MnB manganese-boron alloy steel, offering superior yield strength and impact resistance compared to standard 45# carbon steel.
- Deep Quenching/Heat Treatment – Induction hardening penetrates 2-4mm beneath the rod surface, achieving HRC 50-55 while maintaining a ductile core for impact absorption.
- 100% QC Inspection – Every assembly undergoes dimensional verification, hardness testing, and hydraulic pressure testing at 1.5x working pressure before shipment, eliminating field failures.
Our catalog of JCB Track Adjust Assemblies includes various specifications, fully compatible with JCB JS, JZ, and 8000-series excavators.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB Alloy Steel |
| Rod Hardness | HRC 50-55 |
| Quench Depth | 2-4 mm |
| Chrome Plating Thickness | 20-30 μm |
| Working Pressure | 25-32 MPa |
| Test Pressure | 1.5x Working Pressure |
| Certification | ISO9001 / SGS |
| Warranty | 12 Months / 2,000 Hours |
2. OEM & Customization
We manufacture from customer drawings, OEM part numbers, or physical samples. Dimensions, stroke length, and mounting interfaces are precision-machined to exact original specifications.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series / Models |
|---|---|---|
| Tracked Excavators | JCB | JS130, JS140, JS160, JS200, JS220, JS260, JS330 |
| Crawler Excavators | JCB | JZ140, JZ235 |
| Mini Excavators | JCB | 8014, 8018, 8025, 8030 |
4. Delivery & Logistics
Factory-direct pricing with flexible MOQ from single units to container loads. Standard export packaging with reliable sea, air, or express freight options.
Technical Features
Track tension is maintained by pumping grease through the adjuster’s zerk fitting, extending the cylinder and pushing the idler forward. A bleed valve permits controlled release for track installation.
The internal floating seal prevents contaminant ingress while retaining grease pressure. The chrome-plated rod resists stone chipping and corrosion in abrasive working conditions.
Applications
- Heavy Mining Operations
- Road Construction
- Quarry & Aggregate Processing
- Demolition & Recycling
- Forestry & Land Clearing
Frequently Asked Questions
Q1: What is your minimum order quantity?
Stock items ship from one piece. Custom production typically requires 10-20 units depending on specifications.
Q2: How long is delivery?
Standard production is 15-25 days. Express sample orders ship within 7 days.
Q3: How deep is the heat treatment?
The induction hardening penetrates 2-4mm below the rod surface, achieving HRC 50-55 with a ductile core.
Q4: What warranty do you provide?
12 months or 2,000 operating hours, whichever occurs first, covering manufacturing defects.
Q5: Can you match my OEM part number?
Yes, provide the JCB part number or drawing and we cross-reference to our production specifications.
Q6: Are you a factory or trading company?
We are a factory-direct manufacturer in Quanzhou, China with in-house CNC machining and heat treatment capabilities.
Q7: What packaging do you use?
Heavy-duty plywood crates with anti-corrosion treatment for international ocean freight.
Maintenance Guide
- Inspect the cylinder rod monthly for chrome pitting, scoring, or seal leakage around the gland nut.
- Check grease fitting cleanliness before every lubrication interval to prevent contaminant injection into the cylinder cavity.
- Maintain correct track tension per OEM specifications; over-tensioning accelerates adjuster seal wear and undercarriage component stress.
- Purge old grease and refill fresh lithium-based grease every 1,000 operating hours.
- Replace the assembly when external leakage persists or stroke adjustment range is exhausted.