Dingtai manufactures Kato U-Yoke, a forged undercarriage component linking the track adjuster to the idler wheel. It transmits track tension and maintains alignment.
We are a factory-direct China manufacturer offering full OEM production for distributors and fleet owners. Direct engineering support and stable quality control reduce procurement risk.
This U-Yoke resists bending and bore elongation under high loads. It prevents idler misalignment, reduces track wear, and avoids costly downtime in excavation work.
Our facility has over 20 years of undercarriage manufacturing experience. ISO9001 and SGS certifications verify process control, material traceability, and consistent product quality.
We forge yoke bodies from 35MnB alloy steel and apply deep quenching to reach HRC 48–52, delivering high impact strength and fatigue resistance.
Core Selling Points
- Global Brand Compatibility: Direct replacement for Kato HD-series undercarriages; precise pin spacing and bore tolerances match OEM assemblies.
- Premium 35MnB Material: Forged alloy steel provides high tensile strength and impact resistance, reducing cracking under heavy shock loads.
- Deep Quenching/Heat Treatment: Induction-hardened pivot bores and pin areas reach HRC 48–52 for extended wear life and reduced deformation.
- 100% QC Inspection: Every U-Yoke passes dimensional, hardness, and magnetic particle inspection before shipment. ISO9001-controlled production records included.
Our catalog of Kato U-Yoke includes various specifications, fully compatible with Kato excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 45# forged alloy steel |
| Hardness | HRC 48–52 (pin/bore zones) |
| Manufacturing Process | Die forging, CNC machining, induction quenching |
| Surface Treatment | Anti-rust oil / optional zinc phosphate coating |
| Certification | ISO9001, SGS material report |
| Warranty | 12 months against manufacturing defects |
2. OEM & Customization
We produce U-Yokes to supplied drawings or original samples, guaranteeing exact pin diameters, bore spacing, and material specifications for Kato machines.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Excavator | Kato | HD250, HD308, HD512, HD820, HD1023, HD1430 |
4. Delivery & Logistics
We offer factory-direct pricing, reliable sea or land freight, and flexible order quantities. Standard export packaging protects parts against corrosion and handling damage.
Technical Features
The U-Yoke is die-forged to align grain flow with load direction. This reduces internal stress and increases resistance to shock loading during track tension changes.
Pivot bores are CNC line-bored after heat treatment. Tight tolerances ensure full bushing contact and prevent uneven pressure that causes premature bore ovality.
Optional zinc phosphate coating and anti-rust oil provide corrosion protection during long-distance shipping and outdoor storage.
Applications
- Mining
- Road Construction
- Quarrying
- Demolition
- Earthmoving
Frequently Asked Questions
Q: What is the minimum order quantity for Kato U-Yoke?
A: OEM production usually starts at 4 units. Trial or sample orders may be accepted depending on stock and model.
Q: Can Dingtai match existing part numbers?
A: Yes. Provide the Kato part number or drawing and we cross-reference or produce to exact specifications.
Q: What heat treatment depth does the U-Yoke receive?
A: Forged 35MnB yokes are induction-hardened to HRC 48–52, with effective case depth typically 4–8 mm depending on model.
Q: What warranty is provided?
A: We provide 12 months from shipment against material or workmanship defects under normal operating conditions.
Q: How long is delivery?
A: Stock samples ship in about 7 days. Bulk OEM orders require 20–35 days after drawing approval.
Q: Are custom dimensions available?
A: Yes. We manufacture to supplied drawings or reverse-engineer from original samples to ensure proper fit.
Maintenance Guide
- Inspect U-Yoke and pin bores every 500 hours. Replace if bore clearance exceeds 2 mm to prevent track misalignment.
- Lubricate pin and bushing contact surfaces during scheduled undercarriage service; dry joints accelerate wear and seizure.
- Maintain correct track tension. Excessive tension increases U-Yoke fatigue risk; loose tension causes idler impact damage.
- Replace cracked or deeply corroded yokes immediately. Visual checks around pin lugs and load-bearing zones are essential.