Heavy-Duty Doosan Track Rollers Built for Demanding Excavator Undercarriages
Dingtai manufactures heavy-duty Doosan track rollers engineered to support excavator weight distribution throughout the undercarriage system, ensuring stable machine operation and extended service life.
Factory-direct pricing with comprehensive OEM manufacturing services enables global clients to source quality replacement rollers without inflated distributor markups or supply chain delays.
Precision-ground rollers prevent premature track chain wear, reducing unscheduled downtime and eliminating costly undercarriage component failures in demanding job site conditions.
With over 20 years of production experience, Dingtai maintains ISO9001 and SGS certifications, demonstrating consistent quality management and full material traceability for every batch.
Each roller utilizes 35MnB alloy steel with deep quenching heat treatment, achieving surface hardness exceeding HRC 52 for extended wear resistance under heavy load.
Core Selling Points
- Premium 35MnB Material: Forged from 35MnB alloy steel, our Doosan track rollers deliver superior tensile strength and impact resistance compared to standard carbon steel alternatives.
- Deep Quenching/Heat Treatment: Induction hardening penetrates 4-8mm deep, creating a wear-resistant surface layer while maintaining a tough ductile core for impact absorption.
- Global Brand Compatibility: Direct replacement for Doosan DX, Solar, and DH series excavators, engineered to match OEM mounting dimensions without modifications or adapters.
- 100% QC Inspection: Every roller undergoes dimensional verification, hardness testing, and leak testing before packaging, ensuring zero operational failures on arrival at your facility.
Product Specifications
Our catalog of Doosan Track Rollers includes various specifications, fully compatible with Doosan DX, Solar, and DH series excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 40MnB Forged Alloy Steel |
| Surface Hardness | HRC 52-58 |
| Hardening Depth | 4-8mm Induction Hardened Layer |
| Manufacturing Process | Precision Forging, CNC Machining, Induction Hardening |
| Seal Type | Floating Metal-to-Metal Seal |
| Bushing Type | Bimetal Bushing with High Tin Content |
| Certification | ISO9001, SGS |
| Warranty | 12 Months or 2,000 Operating Hours |
2. OEM & Customization
Dingtai produces rollers to exact OEM drawings, accepting custom dimensions, material specifications, and private labeling to meet specific fleet requirements without compromise.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Crawler Excavator | Doosan | DX140LC, DX225LC, DX300LC, DX340LC |
| Crawler Excavator | Doosan | Solar 220LC-V, Solar 300LC-V |
| Crawler Excavator | Doosan | DH225LC-7, DH300LC-7, DH420LC-7 |
| Mini Excavator | Doosan | DX55, DX60, DX63 |
4. Delivery & Logistics
Factory-direct pricing with flexible MOQ starting from 10 units, standard export packaging, and reliable shipping via sea freight or express courier worldwide.
Technical Features
Each Doosan track roller features a floating metal-to-metal seal system, maintaining permanent lubrication retention while preventing contamination ingress from mud, sand, and water.
Bimetal bushings with high tin content provide excellent friction reduction and heat dissipation, extending service intervals beyond standard single-metal bushing designs under continuous heavy loading.
Forged roller shells undergo CNC turning and induction hardening, ensuring concentricity tolerance within 0.05mm for smooth track chain engagement and reduced vibration.
Applications
- Mining operations with abrasive ore extraction environments
- Road construction and highway building projects
- Quarrying and aggregate processing facilities
- Demolition and heavy structural excavation
- Forestry and land clearing operations
- Utility installation and pipeline trenching
Frequently Asked Questions
Q1: What is the MOQ for Doosan track rollers?
Minimum order quantity starts at 10 units per specification. Mixed model orders are accepted to accommodate fleet stocking needs.
Q2: What is the delivery time?
Standard production time is 15-25 days for stock specifications and 30-45 days for custom or large-volume orders.
Q3: How deep is the heat treatment on your track rollers?
Induction hardening penetrates 4-8mm below the rolling surface, achieving HRC 52-58 hardness while preserving core ductility.
Q4: What warranty do you provide?
We provide a 12-month or 2,000 operating hour warranty against manufacturing defects, whichever occurs first.
Q5: Can you match OEM part numbers?
Yes. Provide your Doosan part number and we will cross-reference to our equivalent specification with dimensional verification.
Q6: Do you offer sample orders?
Yes, sample orders of 1-2 units are available for quality evaluation before committing to bulk procurement.
Q7: Are your rollers interchangeable with original Doosan parts?
Our rollers are manufactured to OEM dimensions, bolt-hole patterns, and material specifications, ensuring direct interchangeability without modification.
Maintenance Guide
- Inspect roller surface for excessive wear, pitting, or flattening every 500 operating hours during scheduled maintenance intervals.
- Check for oil leaks around seal areas, indicating floating seal failure requiring immediate replacement.
- Verify mounting bolts are tightened to OEM torque specifications during each scheduled maintenance cycle.
- Replace rollers when wear exceeds 25% of original shell thickness or when abnormal vibration is detected.
- Always replace rollers in complete sets on one side to maintain equal load distribution across the undercarriage.