Dingtai manufactures single flange track rollers for Doosan bulldozers, supporting track shoe weight and guiding track chain alignment across the undercarriage.
We provide factory-direct OEM manufacturing and customized production for global distributors, equipment fleets, and aftermarket parts buyers requiring exact Doosan specifications.
This roller prevents premature track wear and downtime by resisting abrasion, impact loads, and oil leakage under severe job-site conditions.
With over 20 years of undercarriage production and ISO9001/SGS certified quality systems, Dingtai ensures repeatable casting, machining, and assembly accuracy.
We use 35MnB material and deep quenching to achieve a hardened tread surface, extending service life and reducing replacement frequency.
Core Selling Points
- Premium 35MnB Material: Forged 35MnB steel provides high tensile strength and wear resistance, ensuring rollers survive heavy Doosan bulldozer workloads.
- Deep Quenching/Heat Treatment: Induction hardening produces uniform surface hardness up to HRC 52-58, protecting the tread from deformation and spalling.
- OEM Capabilities: We manufacture from drawings or samples, matching OEM part numbers and critical dimensions for direct replacement on Doosan machines.
- 100% QC Inspection: Every roller passes dimensional, hardness, and leak testing before shipment, reducing field failures and warranty claims.
Product Catalog
Our catalog of Doosan Bulldozer Track Roller-Single Flange includes various specifications, fully compatible with Doosan excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB forged alloy steel |
| Tread Hardness | HRC 50-58 |
| Heat Treatment | Induction hardening, depth 4-8 mm |
| Process | Precision forging, CNC machining, deep quenching |
| Sealing | Lifetime lubricated floating seal |
| Certification | ISO9001:2015, SGS |
| Warranty | 12 months or 1,500 working hours |
OEM & Customization
We match original drawings, critical dimensions, and part numbers, manufacturing single flange rollers to strict Doosan OEM fit and performance standards.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Crawler Bulldozer | Doosan | DD80, DD100, DD120, DD130 series |
| Crawler Excavator | Doosan | DX225, DX300, DX340, S225, S300 series |
Delivery & Logistics
Dingtai ships worldwide with factory-direct pricing. We offer flexible MOQ and reliable packaging to support urgent aftermarket orders and large fleet maintenance programs.
Technical Features
The single flange design laterally stabilizes the track chain while allowing smooth rotation. This reduces side wear and keeps the track aligned under heavy drawbar loads.
Forged 35MnB steel blanks undergo induction hardening, producing a deep martensitic tread layer with a tough core to resist impact, cracking, and fatigue.
Floating seals retain lubricant and exclude mud, sand, and water, preventing internal rust and extending maintenance intervals.
Applications
- Mining operations
- Road construction
- Quarrying and aggregate processing
- Demolition and site clearing
- Forestry and land reclamation
Frequently Asked Questions
What is your MOQ for Doosan single flange track rollers?
MOQ is typically 4 pieces per specification, but mixed models are accepted to reduce initial stock pressure.
What is the delivery time?
Standard production takes 20-30 days. Stocked popular models ship within 7-10 days after order confirmation.
How deep is the heat treatment?
Tread surface hardening depth is 4-8 mm depending on roller size, with hardness HRC 50-58.
Do you offer a warranty?
Yes, 12 months or 1,500 working hours against manufacturing defects under normal operation and maintenance.
Can you match Doosan part numbers?
Yes, provide the OEM part number or bearing dimensions, and we will cross-match and manufacture to exact replacement specifications.
Are seals replaceable?
We use lifetime lubricated floating seal design. If seal replacement is required, service kits are available.
Maintenance Guide
- Inspect Weekly: Check rollers for oil leakage, surface spalling, or uneven tread wear during routine undercarriage inspections.
- Adjust Track Tension: Maintain correct track sag to prevent excessive side loading and accelerated roller wear.
- Re-torque Bolts: Check mounting bolt torque during initial operation and at regular service intervals to prevent loosening.
- Replace Before Failure: Replace rollers when tread depth is severely worn or internal clearance causes track wandering.