Product Overview
Dingtai manufactures Daewoo carrier rollers, top support components that maintain track alignment and reduce undercarriage vibration during excavator operation.
Factory-direct production supports comprehensive OEM manufacturing, custom shaft dimensions, and strict process control for global replacement markets.
Our rollers resist flange wear, shaft seizure, and tread spalling, reducing unplanned downtime and extending total undercarriage service life.
Over 20 years of manufacturing experience and ISO9001/SGS-certified production ensure consistent quality for heavy equipment fleets worldwide.
Each unit uses 35MnB forged steel and deep quenching heat treatment to achieve high surface hardness and impact toughness.
Core Selling Points
- Premium 35MnB Material: Forged 35MnB steel provides high tensile strength and impact resistance, reducing shell cracking under heavy track loads and severe ground conditions.
- Deep Quenching/Heat Treatment: Tread surfaces are induction hardened to HRC 52–58, producing wear-resistant contact faces that extend roller replacement intervals.
- Global Brand Compatibility: Direct replacement profiles match Daewoo DH and DX series excavators, including OEM part number cross-referencing for hassle-free fleet maintenance.
- ISO9001/SGS Certified: Every batch follows documented quality control procedures, from raw material inspection to final dimensional verification and surface hardness testing.
Product Grid
Our catalog of Daewoo Carrier Roller includes various specifications, fully compatible with Daewoo DH and DX series excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB forged alloy steel |
| Hardness | HRC 52–58 tread surface; shaft HRC 50–55 |
| Process | Forging, CNC machining, induction hardening, tempering, precision grinding |
| Certification | ISO9001, SGS |
| Warranty | 12 months from shipment |
2. OEM & Customization
We match OEM drawings, custom shaft lengths, bolt patterns, and hardness specifications to ensure exact fitment for Daewoo DH and DX models.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Tracked Excavator | Daewoo / Doosan | DH220, DH300, DX225LC, DX300LC, DX340LC |
| Tracked Dozer | Daewoo / Doosan | DD80, DD100 |
4. Delivery & Logistics
We offer factory-direct pricing, flexible MOQ, and reinforced export packaging. Standard sea freight or express shipping is available to major US ports.
Technical Features
Forged 35MnB steel with hardened tread surfaces resists contact fatigue and reduces wear between track chain and upper roller assembly.
Floating seal assemblies retain internal lubricant while blocking abrasive dirt and moisture, extending service life in high-load undercarriage conditions.
Precision-machined shafts and bimetal bushings maintain stable rotation and prevent shaft scoring under lateral track forces.
Applications
- Mining operations with abrasive rock and high-impact track loading.
- Road construction and earthmoving projects on compacted surfaces.
- Quarrying and aggregate handling with severe undercarriage wear.
- Demolition and forestry applications requiring stable track alignment.
Frequently Asked Questions
- What is the minimum order quantity?
- MOQ is 1 piece for stock samples; bulk production orders typically start at 20–50 pieces depending on model.
- How long is delivery time?
- Standard models ship within 7–15 days. Custom OEM production requires 25–35 days after drawing confirmation.
- What is the heat treatment depth?
- Tread surface hardening depth is 5–8 mm, achieving HRC 52–58 for reliable wear resistance.
- What warranty is provided?
- We provide a 12-month warranty from shipment covering manufacturing defects under normal operating conditions.
- How do I match part numbers?
- Send the Daewoo OEM part number or machine model. We cross-match it to the correct Dingtai carrier roller reference.
- Are these compatible with original equipment?
- Yes. Dimensions, bolt patterns, and hardness specifications follow OEM drawings for direct replacement without modification.
Maintenance Guide
- Installation: Clean mounting surfaces and torque bolts to OEM specifications to prevent loosening under vibration and track tension.
- Inspection: Check for oil leakage, flange wear, and uneven tread contact every 500 operating hours or during routine service intervals.
- Replacement: Replace carrier rollers when tread wear exceeds 25% or radial play develops to avoid accelerated track chain damage.