Dingtai manufactures forged Liebherr U-yoke components for track tensioning assemblies, connecting the idler to the recoil system under high dynamic loads.
As a factory-direct supplier, we offer complete OEM manufacturing services, including custom dimensions, material specification and branded packaging for global distribution partners.
Our U-yoke resists bending, cracking and bore elongation, reducing unplanned downtime and keeping track tension stable in demanding excavation and dozing conditions.
With over 20 years of heavy machinery component experience, Dingtai holds ISO9001 and SGS certifications, ensuring repeatable quality for every production batch.
We use 35MnB forged steel and deep induction hardening to deliver high core toughness and a wear-resistant surface under severe track load.
Core Selling Points
- Premium 35MnB Material: Forged from high-tensile 35MnB steel, the U-yoke withstands heavy shock loads without bending or cracking in hard rock conditions.
- Deep Quenching/Heat Treatment: Induction hardening creates a hard surface layer while preserving a tough core, extending service life under constant track tension.
- Precision Forging/Casting: CNC machined pin bores and mounting faces ensure exact fit with Liebherr idler and recoil assemblies, eliminating misalignment.
- 100% QC Inspection: Every U-yoke undergoes dimensional inspection, hardness testing and crack detection before shipment, backed by ISO9001/SGS documentation.
Product Range
Our catalog of Liebherr U-Yoke includes various specifications, fully compatible with Liebherr excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB forged alloy steel |
| Hardness (HRC) | HRC 48–55 surface, HRC 28–35 core |
| Process | Precision forging, CNC machining, deep induction hardening |
| Certification | ISO9001, SGS |
| Warranty | 12 months / 2,000 working hours |
OEM & Customization
Send your Liebherr part number or drawing. We match dimensions, bore tolerances and material grades exactly to OEM standards for direct replacement.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Crawler Excavator | Liebherr | R 900, R 914, R 924, R 934, R 944, R 954, R 964, R 974 |
| Crawler Dozer | Liebherr | PR 724, PR 734, PR 744, PR 754 |
| Mining Excavator | Liebherr | R 984, R 996 |
Delivery & Logistics
Factory-direct pricing with flexible MOQ. We ship by sea, air or express with rust-proof packaging and reliable lead times to US ports.
Technical Features
The U-yoke is precision forged from a single billet, aligning grain flow with the main load path to reduce stress concentrations and fatigue cracks.
Deep induction hardening penetrates 8–15 mm on pin bore and contact faces, providing a hard wear surface while the core remains tough.
CNC boring ensures exact pin alignment between the idler and recoil assembly, preventing uneven track tension and premature rail wear.
Applications
- Mining and quarrying: track tension stability under abrasive rock and high-impact loading.
- Road construction: reliable undercarriage alignment in grading and base preparation.
- Demolition and recycling: resistance to shock loads when handling debris.
- Forestry and heavy earthmoving: consistent performance in uneven terrain.
Frequently Asked Questions
What is the minimum order quantity for Liebherr U-yoke?
Stock models: 1 piece. Custom OEM orders: 10 pieces per specification.
What is the delivery time?
Stock: 7–15 days. Custom production: 25–35 days after drawing approval.
How deep is the heat treatment?
Pin bore and contact surfaces are induction hardened to 8–15 mm depending on part number.
What warranty do you provide?
12 months or 2,000 working hours against manufacturing defects under normal use.
How do I match my Liebherr part number?
Provide the OEM part number or drawing. Our engineers confirm dimensions, bore tolerance and material grade.
Do you provide material certificates?
Yes. ISO9001/SGS reports and material test certificates are available with each batch.
Can you produce non-standard U-yoke sizes?
Yes. We customize dimensions, hardness and coating according to your technical drawings.
How do you package the U-yoke?
Anti-rust oil, heavy-duty carton or wooden pallet, reinforced for sea freight.
Maintenance Guide
- Inspect pin bores for elongation before installation; replace if bore diameter exceeds OEM tolerance.
- Check for cracks, especially around forged bends and weld zones, using dye penetrant or magnetic particle testing.
- Lubricate pins and bushings with recommended heavy-duty grease before assembly to prevent dry metal contact.
- Maintain correct track tension; over-tensioning increases U-yoke load and accelerates fatigue.
- Replace U-yoke when surface hardness is worn through or alignment marks show uneven idler contact.