Dingtai manufactures Hitachi U-Yoke assemblies, the forged structural component that secures the idler and maintains precise track alignment in excavator undercarriages.
We supply factory-direct U-Yoke assemblies with complete OEM manufacturing services, supporting custom specifications and global procurement programs for replacement undercarriage parts.
Our heat-treated U-Yoke resists bending, cracking, and premature wear, reducing unplanned downtime and extending total undercarriage service life in demanding conditions.
With over 20 years of heavy machinery manufacturing experience, Dingtai holds ISO9001 and SGS certifications, ensuring every Hitachi U-Yoke meets rigorous quality standards.
Manufactured from 35MnB alloy steel and deep-quenched to HRC 52–58, our U-Yoke delivers exceptional structural strength and wear resistance.
Core Selling Points
- Global Brand Compatibility: Dingtai U-Yoke assemblies match Hitachi OEM dimensions and bolt patterns, allowing direct replacement in ZX and EX series excavators without modification.
- Premium 35MnB Material: Manufactured from high-tensile 35MnB steel, each U-Yoke provides superior load-bearing capacity and resistance to deformation under heavy excavator working weights.
- Deep Quenching/Heat Treatment: Our controlled deep quenching process delivers uniform hardness of HRC 52-58, ensuring the yoke withstands abrasive undercarriage environments and impact loads.
- OEM Capabilities: Dingtai produces U-Yokes to customer drawings, samples, or OEM part numbers, with custom machining and branding available for global distributors and equipment fleets.
Product Grid
Our catalog of Hitachi U-Yoke includes various specifications, fully compatible with Hitachi excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB alloy steel |
| Hardness HRC | HRC 52–58 after deep quenching |
| Manufacturing Process | Precision forging / casting, CNC machining |
| Certification | ISO9001, SGS |
| Warranty | 12 months or 2,000 working hours, whichever comes first |
OEM & Customization
Dingtai matches OEM drawings, custom dimensions, and part numbers under strict quality control, ensuring Hitachi U-Yoke fits perfectly without modification.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Excavator | Hitachi | ZX200, ZX210, ZX240, ZX330, ZX350, ZX470, EX200, EX300 |
| Excavator (Mini) | Hitachi | ZX50, ZX75, ZX85 |
Delivery & Logistics
Dingtai offers reliable global shipping, factory-direct pricing, and flexible MOQs, allowing procurement managers to order sample lots or full-container quantities efficiently.
Technical Features
The U-Yoke is precision-forged from single-alloy 35MnB stock, eliminating weld weak points and ensuring uniform grain structure across load-bearing areas.
Deep quenching to HRC 52–58 creates a hardened wear surface while maintaining a tough core, giving the yoke high resistance to impact and bending.
CNC-machined bores and mounting faces guarantee exact alignment with idler shafts and track frames, reducing uneven wear and track misalignment.
Applications
- Mining: Excavators working in high-abrasion ore and rock.
- Road Construction: Track machines operating on graded earth, asphalt, and gravel.
- Quarrying: Heavy impact loading from blasted stone handling.
- Forestry: Track loaders working on uneven terrain.
- Demolition: High-stress operations requiring reinforced undercarriage parts.
Frequently Asked Questions
Q: What is the MOQ for Hitachi U-Yoke?
A: Our standard MOQ is 1 piece for stock models; custom OEM orders typically start at 10–50 pieces.
Q: What is the delivery time?
A: Stock U-Yokes ship within 7–15 days. Custom forged U-Yoke production generally takes 25–35 days after drawing approval.
Q: How deep is the heat treatment?
A: The surface hardening depth reaches 8–15 mm depending on section thickness, achieving HRC 52–58 after quenching.
Q: What warranty do you provide?
A: We offer a 12-month or 2,000-working-hour warranty against material and workmanship defects under normal operating conditions.
Q: Can you match Hitachi part numbers?
A: Yes. Provide the OEM part number or drawing, and we will cross-reference and manufacture to exact specifications.
Q: Are samples available?
A: Yes, sample orders are available for evaluation, with sample cost refundable on first bulk order.
Maintenance Guide
Installation: Clean mounting surfaces and verify bolt hole alignment before fitting the U-Yoke. Torque bolts to Hitachi OEM specifications to prevent premature loosening.
Inspection: Check for visible cracks, deformation, or uneven wear at 500-hour intervals. Pay attention to idler shaft contact areas and mounting faces.
Replacement: Replace the U-Yoke when deflection exceeds OEM tolerance or if deep cracks appear, typically at 6,000–8,000 working hours in demanding applications.