Dingtai manufactures single and double flange Hitachi track rollers that support excavator weight and guide track chains in undercarriage systems.
As an excavator undercarriage parts manufacturer, we provide factory-direct OEM manufacturing for global buyers, including custom dimensions, brand-neutral packaging, and full aftermarket support for Hitachi machines.
Heavy-duty track rollers prevent premature undercarriage failure, reduce downtime, and resist wear in abrasive earthmoving and mining environments.
With over 20 years of experience and ISO9001/SGS certifications, Dingtai maintains consistent hardness, dimensional accuracy, and quality control.
We use 35MnB steel and deep quenching processes, achieving high surface hardness and a tough core for impact resistance.
Core Selling Points
- Premium 35MnB Material: Track rollers are forged from 35MnB steel, offering high tensile strength, excellent wear resistance, and longer service life under harsh loads.
- Deep Quenching/Heat Treatment: Induction hardening creates a 50-60 HRC surface while retaining a tough core, reducing spalling and impact fractures.
- Global Brand Compatibility: Direct-fit replacement for Hitachi EX/ZX series excavators, matching OEM part numbers and mounting dimensions without modification.
- ISO9001/SGS Certified: Our quality system and material reports meet international standards, giving procurement teams verified traceability and consistent batch performance.
Product Range
Our catalog of Hitachi track rollers includes various specifications, fully compatible with Hitachi excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB forged steel |
| Surface Hardness | HRC 50-60 induction hardened |
| Core Hardness | HRC 30-40 for impact toughness |
| Manufacturing Process | Forging, CNC machining, induction hardening, grinding |
| Seal System | Floating seals with lifetime lubrication |
| Certification | ISO9001:2015, SGS material reports |
| Warranty | 12 months or 2,000 operating hours |
2. OEM & Customization
Dingtai matches Hitachi OEM drawings and custom dimensions, producing track rollers with exact part number pairing, tolerances, and customer-specific branding.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Hydraulic Excavator | Hitachi | ZX130, ZX200, ZX210LC, ZX240, ZX330, ZX350LC, ZX470 |
| Legacy Excavator | Hitachi | EX200, EX300, EX450 |
| Crawler Crane / Foundation Machine | Hitachi | KH series, UH series |
4. Delivery & Logistics
Factory-direct pricing, reliable sea or air shipping, and flexible MOQ support urgent replacement orders and large fleet maintenance programs.
Technical Features
Each roller body is forged from 35MnB steel and induction hardened to HRC 50-60, yielding wear resistance with impact toughness.
Floating seals with lifetime lubricant prevent abrasive dust and water ingress, maintaining smooth rotation and extending service intervals.
A bimetal bushing supports high radial loads and reduces friction between roller shell and shaft, lowering heat generation under continuous operation.
Applications
- Surface mining and quarrying
- Road and highway construction
- Heavy civil earthmoving
- Demolition and recycling
- Forestry and pipeline right-of-way work
Frequently Asked Questions
- What is the minimum order quantity for Hitachi track rollers?
- MOQ is typically 10 pieces per part number. Sample orders are available for OEM evaluation.
- How long does delivery take?
- Production takes 15-25 days. Sea freight to major US ports takes 20-35 days; air freight is available.
- What heat treatment depth do you guarantee?
- Induction hardening depth is 4-8 mm depending on roller size, with surface hardness HRC 50-60. Material reports are included.
- Do your track rollers match original Hitachi part numbers?
- Yes. We cross-reference Hitachi OEM part numbers and mounting dimensions to ensure direct replacement without modification.
- What warranty is provided?
- 12 months or 2,000 operating hours against manufacturing defects, whichever comes first. Covers material and workmanship.
- Can you provide custom packaging or private labeling?
- Yes. We offer neutral packaging, customer-branded boxes, and custom part number marking.
- How do I confirm the correct roller for a ZX330?
- Send the OEM part number, machine serial number, and roller dimensions. Our engineers confirm interchange before quotation.
Maintenance Guide
- Inspect roller tread wear, track sag, and bolt torque weekly; record wear patterns for trend analysis.
- Check floating seal areas for oil leakage monthly; replace damaged seals immediately to avoid contamination.
- Tighten mounting bolts to Hitachi torque specifications after the first 50 hours and every 500 operating hours.
- Replace track rollers as a matched set if tread wear exceeds 25 percent or uneven wear develops.
- Keep undercarriage clear of abrasive mud and debris to extend bushing and seal service life.