JCB U-Yoke Manufacturing
Dingtai manufactures JCB U-Yokes, precision-forged steel couplings that transmit torque between the driveshaft and axle or transmission in heavy-duty drivetrain systems.
We operate as a factory-direct supplier with full OEM manufacturing, supporting replacement and custom orders for North American distributors and procurement teams.
Precision machining minimizes spline backlash and vibration, preventing premature wear, cracking, and unplanned downtime in demanding JCB machines.
With over 20 years of engineering experience and ISO9001/SGS-certified production, Dingtai delivers consistent metallurgy, dimensional accuracy, and long service life.
Every yoke is forged from 35MnB alloy steel and induction hardened to 50–55 HRC, resisting bending, fatigue, and torsional stress under load.
Core Selling Points
- Global Brand Compatibility: Direct replacement for JCB OEM part numbers; fits backhoe loaders, excavators, and wheel loaders without modification.
- Premium 35MnB Material: Forged from vacuum-degassed 35MnB alloy steel for high torsional strength and impact resistance under heavy load.
- Deep Quenching/Heat Treatment: Induction hardening with controlled quench depth creates a wear-resistant surface while retaining a tough ductile core.
- 100% QC Inspection: Every batch undergoes dimensional inspection, hardness testing, and magnetic particle inspection to eliminate hidden cracks or voids.
Product Range
Our catalog of JCB U-Yokes includes various specifications, fully compatible with JCB backhoe loaders, excavators, and wheel loaders.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB alloy steel, vacuum-degassed |
| Hardness | Surface 50–55 HRC; core 25–34 HRC |
| Heat Treatment | Induction hardening, controlled quench depth 1.5–3.0 mm |
| Process | Hot forging, CNC machining, broaching, optional black oxide/phosphating |
| Certification | ISO9001:2015, SGS material report, CMM dimensional report |
| Warranty | 12 months or 2,000 operating hours |
2. OEM & Customization
Provide JCB part numbers or drawings. We match spline profiles, flange diameters, and balancing requirements to OEM standards.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Backhoe Loader | JCB | 3CX, 4CX, 3DX, 4DX |
| Wheel Loader | JCB | 411, 426, 436, 456 |
| Excavator | JCB | JS130, JS160, JS200, JS220 |
4. Delivery & Logistics
Factory-direct pricing with flexible MOQ from 10 units. We ship via air, sea, or express to US ports and warehouses.
Technical Features
The U-yoke transmits torque through a cross-and-bearing assembly. It absorbs angular misalignment during axle articulation, maintaining smooth power delivery without binding.
Induction hardening creates a martensitic wear layer on bearing journals, while the forged flange ears retain ductile core toughness to resist fatigue cracking.
CNC broaching guarantees exact spline engagement and concentricity, reducing backlash and preventing fretting wear on the companion flange.
Applications
- Road construction and site preparation
- Backhoe trenching and utility excavation
- Quarry and aggregate material handling
- Municipal earthmoving and snow removal equipment
Frequently Asked Questions
1. What is the minimum order quantity for JCB U-Yokes?
MOQ is 10 units per part number for standard items. Custom OEM orders may require 50 units.
2. How long is delivery to the United States?
Stock samples ship in 7–10 days. Bulk orders ship in 25–35 days depending on process and port.
3. What heat treatment depth do you guarantee?
Induction hardening depth is controlled at 1.5–3.0 mm, achieving 50–55 HRC surface hardness.
4. What is the warranty policy?
12 months or 2,000 operating hours against material and workmanship defects under normal operating conditions.
5. Can you match JCB OEM part numbers?
Yes. Provide the OEM part number or drawing; we cross-reference and verify spline, flange, and bearing dimensions.
6. How do you ensure quality?
Each batch undergoes hardness tests, magnetic particle inspection, and dimensional checks with CMM reports available.
Maintenance Guide
- Clean mating splines and inspect for nicks before installation. Apply molybdenum disulfide grease to prevent fretting.
- Torque flange bolts to JCB specification. Re-torque after the first 50 operating hours to compensate for seating.
- Check radial play and vibration every 250 hours. Replace the yoke if backlash exceeds OEM tolerance limits.
- Inspect bearing journals and seal surfaces for pitting or cracks. Replace yoke and cross assembly together for balanced operation.