We manufacture Doosan bulldozer segments—bolt-on sprocket rims that transfer final drive torque to the track chain in demanding undercarriage applications.
Factory-direct production supports global OEM and aftermarket programs, including custom tooth profiles, bolting patterns and packaging for Doosan bulldozer fleets.
Hardened segments resist sprocket tooth wear, preventing premature track chain stretch, drive slippage and costly unplanned downtime on site.
With 20+ years of undercarriage manufacturing and ISO9001/SGS certified processes, Dingtai delivers repeatable quality for demanding US procurement requirements.
Segments are forged from 35MnB steel and deep quenched for high surface hardness and long service life under abrasive conditions.
Core Selling Points
- Premium 35MnB Material: Forged from high-grade 35MnB steel for superior impact toughness, tensile strength and resistance to cracking under heavy bulldozer loads.
- Deep Quenching/Heat Treatment: Deep quench hardening produces uniform HRC 50-56 surface hardness, extending tooth life and reducing replacement frequency in abrasive conditions.
- 100% QC Inspection: Every segment is dimensionally checked and hardness tested before shipment, ensuring consistent bolt-hole alignment and reliable fit on Doosan sprocket hubs.
- OEM Capabilities: We manufacture to OEM drawings or reverse-engineer existing samples, providing exact tooth geometry, pitch and bolt patterns for global aftermarket customers.
Product Catalog
Our catalog of Doosan Bulldozer Segment includes various specifications, fully compatible with Doosan bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB alloy steel |
| Hardness (HRC) | Surface HRC 50-56 / Core HRC 30-35 |
| Heat Treatment | Deep quench hardening, 5-8 mm effective depth |
| Process | Precision forging, CNC machining, shot blasting |
| Certification | ISO9001:2015, SGS |
| Warranty | 12 months / 2,000 hours against manufacturing defects |
OEM & Customization
Dingtai matches OEM drawings, custom dimensions, tooth profiles and bolt patterns, strictly following Doosan specifications for direct fit and interchangeability.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Crawler Bulldozer | Doosan / Daewoo | DD80, DD100, DD110, D50S, D80S |
Delivery & Logistics
Factory-direct pricing, reliable sea/air freight, and flexible MOQ from 10 pieces support mixed-model orders for US procurement and aftermarket distributors.
Technical Features
Segments are forged from 35MnB alloy steel and deep quenched, producing a hard martensitic surface that resists abrasive tooth wear.
Precision hobbed tooth profiles maintain correct pitch with track chain bushings, reducing localized stress and preventing premature track link wear.
CNC-machined bolt holes and counterbores match hub dowels, ensuring secure mounting and uniform torque distribution under severe shock loads.
Applications
- Mining operations
- Quarry and aggregate production
- Road construction and heavy civil works
- Land clearing and forestry
- Demolition and site preparation
Frequently Asked Questions
A: MOQ is 10 pieces per specification. Mixed-model orders are accepted for initial trial and aftermarket stock.
A: Production takes 25-35 days after drawing confirmation or deposit, depending on order quantity and heat treatment batch size.
A: Hardening depth is 5-8 mm, with surface hardness HRC 50-56 and core hardness HRC 30-35 for impact toughness.
A: We provide a 12-month or 2,000-hour warranty against manufacturing defects. Normal wear and misuse are excluded.
A: Yes. Provide the Doosan/OEM part number or a sample drawing; we verify tooth geometry, pitch and bolt pattern before production.
A: Yes. We maintain standard pitch and tooth profile to match OEM and quality aftermarket Doosan bulldozer track chains.
Maintenance Guide
- Inspect tooth profile every 250 hours: Sharp, hooked, or worn teeth indicate the segment needs replacement.
- Torque bolts correctly: Use a calibrated torque wrench and re-torque after the first 50 operating hours to prevent loosening.
- Check track tension: Maintain correct track sag; excessive tension accelerates wear, while loose track causes sprocket jumping and tooth damage.
- Replace in sets: Replace segments together and inspect the sprocket hub and track chain to maintain uniform load distribution.