Top Description
We manufacture complete Doosan bulldozer undercarriage parts—track rollers, idlers, sprockets, track chains—to support machine weight and deliver reliable traction.
As a factory-direct manufacturer, we provide comprehensive OEM services, supplying replacement undercarriage components directly to distributors and equipment dealers worldwide.
Our components resist abrasive wear and fatigue cracks, preventing unexpected downtime and reducing the high cost of undercarriage maintenance on your job sites.
Backed by 20+ years of focused engineering and ISO9001/SGS-certified quality systems, Dingtai delivers repeatable durability that procurement professionals can trust.
Key components are forged from 35MnB alloy steel and heat-treated via deep quenching to achieve a hard surface and tough core for long service life.
Core Selling Points
- Global Brand Compatibility – Our undercarriage parts are engineered as direct-fit replacements for all major Doosan bulldozer series, matching OEM mounting dimensions and specs.
- Premium 35MnB Material – We use high-tensile 35MnB steel for rollers and links, providing superior impact toughness and deformation resistance under heavy bulldozing loads.
- Deep Quenching/Heat Treatment – Induction hardening yields a surface hardness of HRC 52-58, while a refined martensitic core absorbs shock without cracking or spalling.
- ISO9001/SGS Certified – Every production batch undergoes full traceable inspection per ISO9001 processes, with SGS material reports available to validate chemical and mechanical properties.
Product Grid Intro
Our catalog of Doosan Bulldozer Undercarriage Parts includes various specifications, fully compatible with Doosan excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 40MnB alloy steel |
| Surface Hardness | HRC 52–58 |
| Core Hardness | HRC 32–38 |
| Manufacturing Process | Hot forging + CNC machining + induction quenching + tempering |
| Certifications | ISO9001, SGS, third-party mill certificates |
| Warranty | 12 months or 2,000 hours |
OEM & Customization
We manufacture undercarriage parts from your drawings or samples, maintaining strict adherence to OEM specifications for dimensions, hardness profiles, and fitment tolerances.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Bulldozer | Doosan | DD80, DD100, DD130, DD160, DD190, DD220 |
Delivery & Logistics
We offer factory-direct pricing with reliable sea and air freight. Standard parts ship within 15–25 days; we support flexible MOQs to match your inventory needs.
Technical Features
Track rollers are assembled with a floating metal seal system that permanently retains grease while excluding dirt and moisture, delivering maintenance-free operation.
Sprockets are precision-forged and feature induction-hardened tooth flanks to resist abrasive wear, ensuring accurate chain engagement and extending track chain life.
Track chains use deep-case hardened pins and bushings with a bimetallic friction-bearing design that delays internal stretch even under high-impact bulldozing conditions.
Applications
- Mining and quarry overburden removal
- Heavy road construction and site grading
- Landfill compaction and waste handling
- Forestry road building and clearing
- Large-scale infrastructure and dam projects
Frequently Asked Questions
What is the minimum order quantity?
We accept low MOQs—typically 1 to 5 pieces per model for stocked parts; trial orders are welcome.
How long is delivery?
Standard parts ship within 15–25 days; custom orders require 4–6 weeks. Air freight is available for urgent shipments.
What heat treatment depth do you achieve?
Induction hardening reaches a depth of 4–8 mm, achieving HRC 52-58 on the surface while retaining a ductile core.
What warranty do you provide?
All undercarriage parts carry a 12-month or 2,000-hour warranty against material and manufacturing defects.
Can you match Doosan part numbers?
Yes, we cross-reference OEM part numbers. Simply provide your numbers, and we will manufacture to the exact specifications.
Are these parts genuine Doosan?
No, these are aftermarket replacement parts engineered to meet or exceed OEM performance, not branded genuine Doosan parts.
Do you customize non-standard dimensions?
We manufacture components per customer drawings—custom diameters, bolt patterns, and special material grades are available.
Maintenance Guide
- Check track sag daily and adjust tension to Doosan specs to avoid accelerated roller and sprocket wear.
- Inspect sprocket teeth for sharpening; replace when wear exceeds 15% of the original profile to protect chain bushings.
- Monitor roller seals for oil leakage; replace any roller immediately if floating seal failure is suspected.
- Measure track chain elongation regularly; replace the chain set when pitch wear reaches 3% to prevent undercarriage damage.