Dingtai manufactures Doosan track adjust assemblies, hydraulic tensioning units that maintain correct track sag and absorb undercarriage impact loads.
We provide factory-direct manufacturing and comprehensive OEM replacement services for construction equipment distributors and fleet owners worldwide.
Correct track adjustment prevents track derailment, premature pin and bushing wear, and costly excavator downtime in demanding jobsite conditions.
With over 20 years of heavy machinery experience, Dingtai is ISO9001 and SGS certified, ensuring repeatable quality and traceability.
Components use 35MnB steel, precision machining, and deep quenching to achieve high hardness, impact resistance, and extended service life.
Core Selling Points
- Premium 35MnB Material: Cylinder bodies and rods use 35MnB steel for high tensile strength, impact resistance, and reliable performance under heavy excavator loads.
- Deep Quenching/Heat Treatment: Heat-treated components reach HRC 40–55, reducing surface wear and extending service intervals in abrasive working environments.
- 100% QC Inspection: Every assembly undergoes dimensional verification, pressure testing, and seal inspection before packing, ensuring zero-defect shipment to customers.
- OEM Capabilities: We produce exact-fit Doosan replacements, matching OEM drawings, mounting dimensions, strokes, and operating pressures for seamless installation.
Our catalog of Doosan Track Adjust Assembly includes various specifications, fully compatible with Doosan excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 40Cr alloy steel |
| Surface Hardness | HRC 40–55 after deep quenching |
| Process | Precision machining, honing, deep quenching, seal fitting |
| Certification | ISO9001, SGS |
| Warranty | 12 months or 2,000 operating hours |
2. OEM & Customization
We match OEM drawings, customize cylinder strokes and mounting dimensions, and strictly follow Doosan replacement standards for exact fit.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Medium Crawler Excavator | Doosan | DX140LC, DX180LC, DX225LC, DX255LC |
| Large Crawler Excavator | Doosan | DX300LC, DX340LC, DX420LC, DX520LC |
4. Delivery & Logistics
We provide reliable global shipping, factory-direct pricing, and flexible order quantities from single test units to full container loads.
Technical Features
The track adjust assembly extends by pumping grease through a sealed cylinder, moving the piston to tension the track chain precisely.
A built-in relief valve prevents over-tensioning, protecting idlers, sprockets, and final drives from excessive structural stress.
Hardened chrome rods and high-pressure seals contain grease, resist contamination, and reduce leakage in abrasive conditions.
Applications
- Mining
- Road Construction
- Quarrying
- Demolition
- Earthmoving
- Heavy civil construction
Frequently Asked Questions (FAQ)
What is your MOQ for Doosan track adjust assemblies?
We accept trial orders from 1 unit. Bulk pricing applies at 10 units or more.
How long is delivery time?
Standard production takes 15–25 days after deposit. Stock items ship within 7 days.
What heat treatment depth do you apply?
Key parts are deep quenched to HRC 40–55. Hardening depth is controlled by part specification and engineering requirements.
What warranty do you provide?
We offer 12 months or 2,000 operating hours against material and manufacturing defects under normal operating conditions.
How do I match the correct part number?
Send your machine model, existing part number, or drawings. Our engineers cross-reference dimensions and confirm correct replacement.
Do you offer OEM branding or neutral packaging?
Yes, we manufacture to OEM specifications and provide neutral, customer-specified, or Dingtai branding.
Maintenance Guide
- Grease the track adjuster periodically to maintain 10–20 mm track sag between idler and first track roller.
- Inspect cylinder seals and relief valve for grease leakage; replace damaged seals immediately to prevent tension loss.
- Avoid over-tensioning, which accelerates track pin, bushing, and sprocket wear and increases final drive stress.
- During track shoe replacement, clean the adjuster rod, check for scoring, and apply fresh grease before reassembly.