Dingtai manufactures complete Doosan bulldozer undercarriage parts—track rollers, idlers, sprockets, chains, and shoes—that form the traction base system.
Factory-direct operation provides global OEM manufacturing services. We supply aftermarket and branded Doosan-compatible undercarriage components to distributors and fleets.
Our heavy-duty undercarriage parts reduce unplanned downtime, resist abrasive wear, and prevent premature track system failures in demanding jobsite conditions.
More than 20 years of engineering experience and ISO9001/SGS certified quality systems ensure every component meets rigorous OEM dimensional standards.
We use 35MnB alloy steel and deep quenching heat treatment to achieve high surface hardness and long service life under heavy loads.
Core Selling Points
- Premium 35MnB Material — Forged from high-tensile 35MnB steel, our undercarriage parts resist cracking, deformation, and wear better than standard carbon steel components.
- Deep Quenching Heat Treatment — Through hardening and deep case quenching deliver uniform HRC hardness, extending wear life in abrasive rock and mineral applications.
- ISO9001/SGS Certified — Every production batch is audited under ISO9001 and SGS inspection protocols, ensuring dimensional accuracy and material traceability for bulk orders.
- OEM Capabilities — We manufacture against original drawings, samples, or part numbers, providing direct replacement fitment for Doosan bulldozers worldwide.
Our catalog of Doosan bulldozers undercarriage parts includes various specifications, fully compatible with Doosan and Daewoo bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 40MnB alloy steel |
| Hardness | Rollers/Idlers: HRC 50–58; Sprockets: HRC 45–52 |
| Heat Treatment | Deep quenching, through hardening, induction hardening |
| Process | Precision forging/casting, CNC machining |
| Certification | ISO9001:2015, SGS |
| Warranty | 12 months or 2,000 hours under normal operating conditions |
OEM & Customization
We match Doosan OEM drawings and part numbers, customize dimensions, logos, and packaging, and maintain strict tolerance control for seamless replacement.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Small/Medium Bulldozer | Doosan / Daewoo | DD80, DD100, DD130 |
| Medium/Large Bulldozer | Doosan / Daewoo | D50S, D60S, D80S |
Delivery & Logistics
We ship from China with export-grade packaging. Factory-direct pricing and flexible MOQs from one set to container loads support distributors and end users.
Technical Features
Floating seal designs in rollers and idlers keep lubricant in and abrasives out, extending component life in severe service conditions.
Deep-quenched 35MnB steel forms a hard wear layer while retaining a tough core, preventing surface spalling under repeated impact.
Precision-machined bores and bimetallic bushings reduce friction and heat, ensuring stable track alignment on Doosan bulldozers.
Applications
- Mining and quarrying
- Road construction
- Earthmoving and site preparation
- Demolition and recycling
- Forestry and land clearing
Frequently Asked Questions
- What is the MOQ for Doosan bulldozer undercarriage parts?
- Standard MOQ is one set for most components; larger orders reduce unit cost and improve lead time per set.
- What is the typical delivery time?
- Stock items ship within 7–10 days. Custom production requires 25–35 days depending on order quantity.
- How deep is the heat treatment hardening?
- Surface hardness reaches HRC 50–58 with a hardened case depth of 6–12 mm on rollers and idlers.
- What warranty do you provide?
- We provide 12 months or 2,000 service hours warranty against material and manufacturing defects under proper operation.
- Can you match Doosan OEM part numbers?
- Yes, we cross-reference Doosan/Daewoo OEM part numbers, serial numbers, and drawings for exact dimensional fit.
- Do you offer custom packaging or private labeling?
- Yes, neutral, custom logo, and branded packaging are available for OEM and distributor programs.
- Which parts are included in the undercarriage set?
- Track rollers, top rollers, idlers, sprockets, track chains, track shoes, bolts and nuts.
- How do I confirm compatibility before ordering?
- Send part numbers, photos, or dimensional drawings; our engineers verify fitment and provide a quotation.
Maintenance Guide
- Inspect track tension daily and adjust according to Doosan specifications to prevent bushing and sprocket wear.
- Check roller and idler oil levels every 250 hours; replace seals if visible leakage or contamination appears.
- Measure track chain pitch and shoe height regularly; replace when chain stretch exceeds 3% or grousers are worn smooth.
- Clean the undercarriage after each shift to remove abrasive dirt, rocks, and mud that accelerate premature wear.
- Torque all mounting bolts at 50-hour inspections and after any undercarriage maintenance to prevent loosening.