We manufacture heavy-duty undercarriage parts for Caterpillar excavators, including track rollers, idlers, sprockets, and track chains that ensure stable mobility.
As a factory-direct manufacturer, we supply complete OEM manufacturing services for global clients, cutting out distribution layers and lowering procurement costs.
Engineered to resist abrasive wear and sudden failure, our parts prevent costly downtime and extend service intervals in the most demanding earthmoving conditions.
With 20+ years of specialization, Dingtai is certified to ISO9001 and verified by SGS, delivering consistent quality that procurement directors can trust.
We utilize 35MnB alloy steel and deep induction quenching to achieve a hardened surface layer, dramatically extending component life under extreme impact loads.
Core Selling Points
- Premium 35MnB Material: Forged from 35MnB alloy steel, our components deliver exceptional tensile strength and impact resistance for demanding excavation tasks.
- Deep Quenching / Heat Treatment: Advanced induction hardening achieves a hardened depth of 8-15mm, significantly reducing abrasive wear and surface spalling.
- Global Brand Compatibility: Precision-engineered to original dimensions, parts seamlessly fit Caterpillar, Komatsu, Hitachi, and Kobelco excavators and bulldozers.
- ISO9001 / SGS Certified: Manufacturing is fully ISO9001:2015 certified with SGS verification, ensuring every batch meets rigorous international quality standards.
Product Grid
Our catalog of Caterpillar Excavator Undercarriage Parts includes various specifications, fully compatible with Caterpillar excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 40Mn2 rolled / forged steel |
| Surface Hardness (Roller) | HRC 52-58 |
| Heat Treatment | Induction hardening + deep quenching |
| Certification | ISO9001, SGS product inspection |
| Warranty | 12 months or 2,000 hours (whichever first) |
2. OEM & Customization
We manufacture to your drawings or samples, customizing dimensions and surface treatments while strictly adhering to OEM specifications for perfect fitment.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series / Models |
|---|---|---|
| Excavator | Caterpillar | 320, 323, 326, 330, 336, 345, 349, 352, 374, 390 |
| Bulldozer | Caterpillar | D6T, D7E, D8T, D9R, D10T |
4. Delivery & Logistics
We offer reliable sea/air/express shipping, direct factory pricing, and flexible MOQs that start from one piece for sample evaluation.
Technical Features
Our track rollers integrate advanced floating seals made from high-grade polyurethane and alloy steel, maintaining oil lubrication and preventing abrasive ingress.
Bimetal bushings with a steel backing and lead-tin bronze inner layer provide high load capacity and low friction, significantly extending roller service life.
Sprockets undergo induction hardening precisely on the tooth profile, preventing rapid wear from chain engagement under heavy torque and high-speed operation.
Applications
These undercarriage parts are deployed in open-pit mining, heavy road construction, rock quarrying, and large-scale demolition projects where extreme abrasive conditions demand durability.
Frequently Asked Questions
Q: What is the minimum order quantity?
A: Our MOQ is flexible. We welcome sample orders of one piece for testing; production MOQs vary by part number.
Q: What is your typical delivery time?
A: Bulk order production lead time is 25-35 days. Sample orders from ready inventory can ship within 7 days.
Q: What is the depth of the heat treatment layer?
A: Through advanced induction hardening, the hardened layer depth reaches 8-15mm, ensuring long-term resistance to abrasive wear.
Q: Do you offer a warranty?
A: Yes, we provide a 12-month or 2,000-hour warranty against manufacturing defects under normal operating conditions.
Q: Can you match my existing part numbers?
A: Absolutely. We cross-reference OEM part numbers from Caterpillar, Komatsu, and others, or manufacture directly from your supplied drawings.
Q: What materials are used?
A: Main materials include 35MnB for rollers, 40Mn2 for track links, and induction-hardened steel for sprockets, all selected for strength and wear resistance.
Maintenance Guide
- Regularly check track tension to avoid excessive wear on idlers and sprockets, adjusting as required by the machine manual.
- Inspect each roller for oil leaks; any visible moisture around the floating seal indicates seal failure and requires immediate replacement.
- Measure track chain pitch with a wear gauge; replace chains when elongation exceeds 2-3% of the original pitch to protect the entire undercarriage.
- Clean the undercarriage thoroughly after work in mud or abrasive materials to reduce corrosion and abrasive paste buildup.
- Replace or rotate sprockets when teeth exhibit sharpness or hooking to prevent accelerated chain and bushing damage.
