Dingtai manufactures double flange track rollers for Doosan bulldozers. These rollers guide the track chain and support extreme machine weight under severe operating conditions.
Factory-direct production provides complete OEM manufacturing services for global clients. We control forging, machining, heat treatment, and assembly without intermediary cost.
Double flange design resists lateral track movement, preventing chain derailment, reducing downtime, and extending undercarriage component life on tough job sites.
Our 20+ years of manufacturing experience and ISO9001/SGS certified quality system deliver reliable batch consistency for procurement professionals and fleet owners.
35MnB steel, deep induction quenching, and precision grinding ensure high wear resistance, correct hardness depth, and long service intervals for Doosan machines.
Core Selling Points
- Premium 35MnB Material: Forged from 35MnB steel, each roller shell provides high tensile strength and impact resistance under continuous dozer loads and rocky ground.
- Deep Quenching/Heat Treatment: Induction hardening achieves HRC 52-58 with 4-8 mm depth, reducing surface wear, spalling, and premature replacement in abrasive conditions.
- Long Life Structure: Double flange and precision-machined internal components maintain track chain alignment, extending roller and track link service life.
- 100% QC Inspection: Every finished roller is inspected for dimensional accuracy, hardness, and seal performance before packaging, reducing field failure risk.
Product Grid
Our catalog of Doosan Bulldozer Track Roller-Double Flange includes various specifications, fully compatible with Doosan excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB forged steel |
| Surface Hardness | HRC 52-58 |
| Hardened Depth | 4-8 mm |
| Process | Forging, CNC machining, induction hardening, precision grinding |
| Certification | ISO9001 / SGS |
| Warranty | 12 months / 2,000 working hours |
2. OEM & Customization
We match customer drawings, OEM part numbers, and custom flange dimensions. Strict tolerance control ensures direct replacement for Doosan undercarriage systems.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Crawler Bulldozer | Doosan / Daewoo | DD80, DD100, DD130 |
| Crawler Excavator | Doosan / Daewoo | DX225LC, DX300LC, DX340LC |
| Custom OEM Undercarriage | Doosan | Part number / drawing matched |
4. Delivery & Logistics
We offer factory-direct pricing, flexible MOQ, and reliable export shipping from Quanzhou Port. Standard export packaging protects rollers against corrosion and impact during transit.
Technical Features
Double flange design controls track chain side shift, keeping rollers centered under dozer loads. This reduces flange wear and derailment risk.
Floating seal and bimetal bushing retain lubrication and exclude abrasive soil, extending roller service intervals in dusty conditions.
35MnB deep quenched shell provides high surface hardness while core remains tough, preventing cracks under impact from rocky ground.
Applications
- Mining and quarrying: abrasive rock, heavy impact loading.
- Road construction: compacted subgrade and heavy grading.
- Demolition and site clearing: mixed debris and rough terrain.
- Heavy civil works: bridge, pipeline, and landfill operations.
Frequently Asked Questions
Q: What is the MOQ for Doosan double flange track rollers?
A: MOQ is 1 piece for stock samples; bulk production pricing applies from 20 pieces, depending on part number and process.
Q: How long is delivery time?
A: Stock items dispatch in 3-7 days; customized production takes 25-35 days after drawing confirmation and deposit.
Q: What heat treatment depth do you achieve?
A: Induction hardening depth is 4-8 mm, with surface hardness HRC 52-58, verified by hardness testing per batch.
Q: What is your warranty policy?
A: 12 months or 2,000 working hours, whichever occurs first, covering manufacturing defects under normal operating conditions.
Q: Can you match Doosan OEM part numbers?
A: Yes. Send the part number or dimension drawing; we cross-match and confirm direct replacement before production.
Q: Do you support sample verification?
A: Yes. We supply single sample rollers for fitment and hardness verification before bulk production commitment.
Maintenance Guide
- Inspect flange and track chain alignment monthly. Uneven flange wear indicates track chain stretching or misalignment.
- Check floating seal and oil level at service intervals. Oil leakage or contamination leads to bushing and shaft failure.
- Maintain correct track tension per Doosan specifications. Over-tension accelerates roller shell and flange wear; under-tension may cause derailment.
- Replace when flange thickness is below 25% original, surface cracking appears, or hardened layer is worn through.