Dingtai manufactures complete Doosan track group assemblies, including track chains, links, pins, bushings, and track shoes, for crawler excavator undercarriage systems.
As a factory-direct supplier, we provide full OEM and replacement manufacturing services to US equipment distributors, rental fleets, and construction companies.
These assemblies prevent unscheduled downtime by resisting track elongation, link cracking, and pin wear under high-impact digging, grading, and lifting conditions.
With over 20 years of engineering experience and ISO9001/SGS certified processes, Dingtai ensures repeatable metallurgy, dimensional accuracy, and dependable replacement quality.
Each track group uses 35MnB steel and deep quenching to deliver uniform surface hardness and fatigue resistance across high-load contact points.
Core Selling Points
- Premium 35MnB Material: Track links and pins are forged from 35MnB steel, providing high tensile strength and resistance to impact deformation under heavy excavation and lifting.
- Deep Quenching/Heat Treatment: Controlled induction hardening penetrates wear surfaces deeply, producing consistent HRC profiles that extend track link and bushing service life in abrasive conditions.
- Global Brand Compatibility: Assemblies are engineered to match Doosan undercarriage dimensions, pitch, bolt patterns, and shoe widths across popular excavator and dozer models.
- 100% QC Inspection: Every completed track group receives dimensional, hardness, and assembly verification before export packing to eliminate early hour field failures.
Our catalog of Doosan Track Group includes various specifications, fully compatible with Doosan excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB forged track links, induction-hardened pins and bushings |
| Hardness | Surface hardness HRC 50–58; core toughness retained for shock loads |
| Pitch | Matched to Doosan OEM specifications for each model |
| Process | Precision forging, deep quenching, tempered link rail machining |
| Certification | ISO9001:2015 quality system, SGS material report available |
| Warranty | 12 months or 2,000 working hours, whichever comes first |
2. OEM & Customization
We manufacture from customer drawings or samples, matching Doosan OEM dimensions, tolerances, and shoe widths for exact replacement compatibility.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Crawler Excavator | Doosan | DX140LC, DX225LCA, DX300LC, DX340LCA, DX380LC, DX420LC, DX530LC |
| Crawler Dozer | Doosan | DD80, DD100 |
4. Delivery & Logistics
We ship from Chinese ports with reinforced steel framing, flexible order quantities, factory-direct pricing, and dependable lead times to North America.
Technical Features
Sealed and lubricated track technology traps oil between pin and bushing, preventing dry contact and reducing internal wear in demanding Doosan applications.
Induction hardening creates a wear-resistant case while maintaining a tough core, critical for absorbing shock loads in rock, demolition, and uneven terrain.
Precision pitch control and heat-treated link rails reduce sprocket impact, vibration, and long-term track elongation across high-hour operations.
Applications
- Mining and quarrying
- Road construction and earthmoving
- Demolition and site clearing
- Pipeline and utility installation
- Aggregate handling and material processing
Frequently Asked Questions
What is the minimum order quantity for Doosan track groups?
Standard models support low trial quantities; container orders reduce unit cost. Contact us with part numbers for exact MOQ.
What is the delivery time?
Standard production takes 15–25 days after advance payment, depending on order quantity and customization.
What heat treatment depth do you apply?
Pins, bushings, and link rails are induction hardened to OEM-comparable case depth, typically HRC 50–58 at wear surfaces.
What warranty policy applies?
We provide 12 months or 2,000 working hours from shipment, whichever comes first, covering manufacturing defects only.
Can you match my Doosan part number?
Yes. Provide the OEM part number or sample; our engineering team cross-references pitch, shoe width, and bolt pattern.
Do you offer custom packaging?
Yes. We offer neutral, private-brand, and heavy-duty wooden crate packaging for safe export transport.
Maintenance Guide
- Inspect track sag daily and adjust tension according to the Doosan operator manual to reduce sprocket and link wear.
- Clean the undercarriage after operation in mud, sand, or rock to prevent packed debris from accelerating pin and bushing wear.
- Check track shoe bolts every 250 working hours and torque to OEM specifications to avoid joint loosening and track separation.
- Monitor bushing and link wear; replace the track group when pitch elongation exceeds OEM limits to protect idlers and sprockets.