Top Description
Dingtai engineers complete undercarriage parts for Caterpillar excavators—track rollers, front idlers, sprockets, and track chains—that bear machine weight and deliver steady traction.
Factory-direct operations strip out middlemen. We provide cost-effective OEM manufacturing and supply proven assemblies to global Caterpillar fleets with full traceability.
Our components fight premature wear and fracture in abrasive, high-impact ground conditions, slashing unplanned downtime and keeping your Cat fleet productive on the roughest sites.
Over 20 years of focused engineering and ISO9001/SGS certifications back every batch, giving procurement leaders verifiable quality and repeatable performance they can rely on.
We forge premium 35MnB alloy steel and apply proprietary deep quenching to achieve surface hardness up to 58 HRC for exceptional wear life under heavy cyclic loads.
Core Selling Points
- 20+ Years Experience – Two decades of dedicated undercarriage engineering guarantee components that handle the punishing demands of high-hour Cat excavators worldwide.
- Global Brand Compatibility – Parts are precision-machined to directly interchange with Caterpillar 320, 330, 336, D6, D8 and more, using OEM part numbers for seamless fit.
- Premium 35MnB Material – High-strength 35MnB steel, paired with optimized heat treatment, delivers superior toughness and fatigue resistance compared to standard carbon grades.
- Deep Quenching/Heat Treatment – Induction hardening creates a 4–8 mm case depth; the hard surface resists abrasion while the ductile core absorbs heavy shock loading.
Product Grid Intro
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 alloy steel |
| Surface Hardness | 52–58 HRC |
| Heat Treatment | Induction deep quenching + tempering |
| Process | Precision forging, CNC machining |
| Certification | ISO 9001:2015, SGS |
| Warranty | 12 months or 2,000 operating hours |
2. OEM & Customization
We match your drawings exactly, producing undercarriage parts with accurate dimensional tolerances, material chemistries, and hardness specifications to strict Caterpillar OEM standards.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Excavator | Caterpillar | 320, 323, 330, 336, 349, 374, 395 |
| Bulldozer | Caterpillar | D6, D8, D10, D11 |
4. Delivery & Logistics
Reliable sea and air freight from factory stock with direct FOB pricing. MOQ begins at 1 piece for trials; bulk orders receive fast turnarounds and dedicated logistics support.
Technical Features
Track rollers and idlers integrate floating seals that permanently hold lubricant inside while blocking abrasive dirt and moisture, dramatically extending service life in mining and quarrying.
Deep induction hardening produces a fine martensitic layer 4–8 mm below the surface. This structure yields high abrasion resistance without sacrificing the core toughness needed for impact.
Bimetal bushings combine a high-strength steel backing with a lead‑tin‑bronze lining, delivering self‑lubrication that stabilizes track pitch and cuts pin wear across long maintenance intervals.
Applications
Mining, quarrying, heavy construction, road building, demolition, forestry, and large-scale infrastructure projects.
Frequently Asked Questions
Q: What is the minimum order quantity (MOQ)?
A: The standard MOQ is 1 piece for trial or sample orders. Volume pricing applies from 50 pieces onward.
Q: How long does delivery take?
A: Stock parts ship within 3–5 working days. Custom production runs require 15–25 days, based on order quantity and machining complexity.
Q: What is the heat treatment depth on your undercarriage parts?
A: Induction hardening creates a hardened case between 4–8 mm, ensuring a hard wear‑resistant surface while the core remains ductile.
Q: What warranty do you provide?
A: We offer a 12‑month or 2,000‑operating‑hour warranty against material defects and manufacturing flaws.
Q: Can you supply parts to match Caterpillar OEM numbers?
A: Yes. We produce exact‑fit replacements for all Cat part numbers—for example, 7Y‑0916 track rollers and 8E‑5304 front idlers. Send us the number for a quotation.
Q: Do you provide material certificates?
A: Every shipment includes mill test reports. Third‑party SGS inspection certificates are available on request.
Q: How do you control quality?
A: 100% of parts undergo dimensional checks, ultrasonic crack detection, and surface hardness testing before packaging and dispatch.
Maintenance Guide
- Inspect track tension daily. Incorrect tension accelerates sprocket and track chain wear and can damage final drives.
- Check all rollers and idlers for oil leakage each shift. Any sign of grease loss usually means a floating seal failure.
- Monitor grouser height. Replace track shoes when grousers wear below 25% of their original height to maintain traction.
- Replace sprockets as soon as teeth become pointed or hooked. Worn sprockets will rapidly degrade the track chain pitch.
- Measure component wear with ultrasonic thickness gauges every 1,000 hours. Replace parts when remaining wall thickness reaches 70% wear limit.