Our Hitachi excavator undercarriage parts—track chains, rollers, idlers, sprockets—support machine weight and drive track movement.
As a factory-direct manufacturer, we offer comprehensive OEM services—precision production, custom branding, and flexible batch quantities for global buyers.
Engineered to resist extreme wear and shock loads, they prevent unexpected downtime and eliminate frequent breakage in tough conditions.
With 20+ years of heavy machinery experience and ISO9001/SGS certifications, we deliver consistent quality you can trust for high-hour applications.
We forge 35MnB alloy steel components, then apply deep induction quenching for surface hardness 52–58 HRC to maximize service life.
Core Selling Points
- Premium 35MnB Material: All track links, rollers, and idlers are forged from high-strength 35MnB steel, delivering exceptional resistance to impact and fatigue.
- Deep Quenching/Heat Treatment: Deep induction heat treatment gives a hardened case depth of 4–8 mm while retaining core toughness for extended wear life.
- ISO9001/SGS Certified: Our ISO9001-certified production and independent SGS inspections guarantee every batch meets strict international quality standards.
- 100% QC Inspection: We conduct 100% dimensional checks and magnetic particle inspection on all parts, eliminating defects before shipment.
Our catalog of Hitachi Excavator Undercarriage Parts includes various specifications, fully compatible with Hitachi excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB alloy steel |
| Heat Treatment | Deep induction quenching |
| Surface Hardness | 52–58 HRC |
| Process | Forging + precision machining |
| Certification | ISO9001, SGS |
| Warranty | 12 months |
2. OEM & Customization
We match original Hitachi drawings exactly, custom dimensions, and manufacture to strict OEM standards, including custom branding and packaging.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Excavator | Hitachi | EX100-5, EX200-2, EX300-5, ZX200-3, ZX330-5G, ZX470H-5G |
| Bulldozer | Hitachi | DX50, DX70, DX80 |
4. Delivery & Logistics
We ship from major ports with reliable freight. Factory-direct pricing and flexible MOQ (1 set) reduce your procurement cost.
Technical Features
Our track chains feature induction-hardened pins and bushings with pressed-fit precision, ensuring extended pitch life and reduced internal wear.
Rollers and idlers use a floating seal system with lifetime lubricant, blocking contaminants and enabling maintenance-free operation up to 5,000 hours.
Bimetal bushings with a high-carbon outer layer and ductile core resist galling under high-load, low-speed conditions typical of heavy earthmoving.
Applications
- Mining
- Road Construction
- Quarrying
- Demolition
- Forestry
- Heavy Civil Works
Frequently Asked Questions
Q1: What is the minimum order quantity (MOQ)?
A: Our standard MOQ is 1 set, with flexible scaling for both trial orders and bulk procurement.
Q2: How long does delivery take?
A: Typical delivery is 15–25 days after order confirmation, depending on quantity and customization.
Q3: What is the heat treatment depth on track rollers?
A: Induction hardening case depth is 4–8 mm on rollers and idlers, achieving surface hardness 52–58 HRC.
Q4: Do you offer a warranty?
A: Yes, all undercarriage parts carry a 12-month warranty against manufacturing defects from shipment date.
Q5: How do I match part numbers?
A: Provide your Hitachi OEM part number; we cross‑reference it and manufacture to exact dimensional specifications.
Q6: Are these genuine Hitachi parts?
A: These are high-quality aftermarket replacements manufactured to meet or exceed OEM specifications, not Hitachi branded.
Maintenance Guide
- Check track tension daily—sag should be 20–30 mm; over-tensioning accelerates pin and bushing wear.
- Inspect rollers and idlers weekly for oil leaks. A failed floating seal requires immediate part replacement to avoid undercarriage damage.
- Monitor sprocket tooth wear; replace when teeth become sharp or hooked to prevent link strain and pitch extension.