Top Description
Dingtai manufactures Daewoo track rollers (bottom rollers) that support excavator weight, guide the track chain, and maintain stable undercarriage movement.
As a factory-direct supplier, we provide complete OEM manufacturing, custom dimensions, and replacement part services for global construction and mining clients.
This product resists abrasive wear and impact breakage, reducing unplanned downtime and extending overall undercarriage service life on Daewoo excavators.
With over 20 years of experience and ISO9001/SGS certification, Dingtai delivers repeatable production quality, material traceability, and reliable performance for procurement professionals.
We use 35MnB alloy steel and deep induction hardening to produce a wear-resistant tread surface with high core strength and extended service intervals.
Core Selling Points
- Premium 35MnB Material: High-strength 35MnB alloy steel is used in every shell, providing superior tensile strength and resistance to impact, bending, and abrasive wear.
- Deep Quenching/Heat Treatment: Our induction hardening process achieves HRC 50–55 on the tread, creating a hard wear surface while retaining a tough inner core.
- Global Brand Compatibility: Dingtai cross-references OEM part numbers for Daewoo and Doosan excavator series, ensuring direct fit and backward compatibility across popular models.
- ISO9001/SGS Certified: Our manufacturing and inspection processes follow ISO9001:2015 standards, with SGS material reports available to verify chemical composition and mechanical properties.
Product Grid
Our catalog of Daewoo Track Roller includes various specifications, fully compatible with Daewoo and Doosan excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB alloy steel, forged shell |
| Tread Hardness | HRC 50–55 |
| Heat Treatment Depth | 5–8 mm induction hardened |
| Manufacturing Process | Hot forging, CNC machining, precision grinding |
| Certification | ISO9001:2015 / SGS material report |
| Warranty | 12 months or 2,000 hours, whichever comes first |
2. OEM & Customization
Dingtai produces track rollers to match customer drawings, OEM part numbers, or physical samples. We maintain strict dimensional tolerances and can apply private labeling.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Excavator 20–22 t | Daewoo / Doosan | DH220, DH225, Solar 220, DX225LC |
| Excavator 28–30 t | Daewoo / Doosan | DH280, DH300, Solar 300, DX300LC |
| Excavator 40–50 t | Daewoo / Doosan | DH420, DH450, DX420, DX480 |
4. Delivery & Logistics
Factory-direct pricing is available with flexible trial order quantities. We ship worldwide by sea or air with protective packaging and reliable lead times.
Technical Features
Forged 35MnB steel provides a high-tensile core that withstands heavy shock loads and resists cracking under extreme undercarriage stress.
Floating seal assemblies prevent abrasive dirt and moisture ingress, while lubricated bimetal bushings maintain a stable oil film for smooth rotation.
Precision-machined mounting surfaces and dimensional tolerances ensure correct alignment and even load distribution across the track chain.
Applications
- Mining and quarrying: continuous operation on abrasive rock surfaces.
- Road construction: heavy earthmoving and grading under variable ground conditions.
- Demolition and recycling: impact loading and debris-filled job sites.
- General earthmoving: site preparation and infrastructure excavation.
Frequently Asked Questions
1. What is the minimum order quantity for Daewoo track rollers?
Trial orders typically start at four pieces per model. Higher quantities qualify for factory-direct pricing and shorter per-unit production cost.
2. How long is production and delivery?
Standard production takes 15–25 days after drawing or deposit confirmation. Shipping time depends on destination and selected freight method.
3. What heat treatment depth is used?
Tread surfaces are induction hardened to HRC 50–55 with a hardened depth of 5–8 mm, preserving core toughness.
4. What warranty policy applies?
Dingtai provides a 12-month or 2,000-hour warranty against manufacturing defects, whichever occurs first, under normal operating conditions.
5. Can you match OEM part numbers?
Yes. Provide the Daewoo or Doosan part number, drawing, or roller dimensions, and our engineers will cross-reference the correct replacement.
6. Do you offer sample orders?
Sample orders can be arranged before bulk production. Samples follow the same material and heat treatment specifications as full production.
7. Can you customize non-standard rollers?
Custom dimensions, brand-neutral packaging, and private marking are available. Send your technical drawing for quotation and feasibility review.
Maintenance Guide
- Check track sag before installation. Incorrect track tension accelerates tread and flange wear, reducing roller service life and fuel efficiency.
- Inspect rollers every 250 operating hours for oil leakage, cracks, flat spots, or excessive lateral play in the mounting.
- Replace rollers when tread wear exceeds 25% or when flange damage causes lateral track movement and uneven chain loading.
- Torque mounting bolts to the manufacturer specification and re-torque after the first 50 operating hours to prevent loosening.
- Clean the undercarriage regularly to remove compacted debris and prevent premature seal failure or bushing contamination.