Liebherr Bulldozer Spring Coil
We manufacture Liebherr bulldozer spring coils, a critical undercarriage recoil component that absorbs track impact and maintains proper tension.
Factory-direct production and comprehensive OEM manufacturing services ensure exact fitment for Liebherr PR series and global construction machinery.
This spring coil reduces track overload damage, prevents undercarriage downtime, and withstands severe shock loads in demanding terrain.
With 20+ years manufacturing experience and ISO9001/SGS-certified processes, Dingtai delivers consistent material quality and dimensional accuracy.
We use 60Si2Mn or 55CrSi spring steel, precision hot coiling, and controlled heat treatment to ensure high fatigue resistance and stable elasticity.
Core Selling Points
- 20+ Years Experience: Over two decades of undercarriage spring manufacturing ensure deep knowledge of Liebherr load requirements and dimensional accuracy.
- Premium Spring Steel Material: We use 60Si2Mn and 55CrSi high-fatigue spring steel to deliver consistent elasticity and long service life.
- Precision Heat Treatment: Controlled quenching, tempering, and shot peening achieve uniform hardness and reduce deformation under cyclic loads.
- 100% QC Inspection: Each batch undergoes load testing, dimensional verification, and surface inspection before export shipment.
Our catalog of Liebherr Bulldozer Spring Coil includes various specifications, fully compatible with Liebherr PR series crawler dozers and track loaders.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 60Si2Mn / 55CrSi high-fatigue spring steel |
| Hardness | HRC 42–48 after quenching and tempering |
| Manufacturing Process | Hot coiling, end grinding, heat treatment, shot peening, anti-corrosion coating |
| Load Tolerance | ±5% of rated spring force |
| Certification | ISO9001, SGS |
| Warranty | 12 months or 2,000 operating hours |
2. OEM & Customization
Dingtai matches original drawings and samples, customizes coil diameter, free length, and load rating, and strictly adheres to Liebherr OEM specifications.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Crawler Dozer | Liebherr | PR 712, PR 724, PR 734, PR 736, PR 744, PR 754, PR 764, PR 776 |
| Track Loader | Liebherr | LR 614, LR 622, LR 632, LR 636, LR 642 |
4. Delivery & Logistics
We provide export-grade packaging and reliable shipping, factory-direct pricing, and flexible MOQ starting from 5 sets for standard Liebherr spring coils.
Technical Features
The spring coil functions as a recoil buffer, absorbing front idler shock loads before they transmit to the final drive and main frame.
Hot coiling followed by controlled tempering produces uniform grain structure, preventing early fatigue cracking under repeated compression.
Shot peening creates compressive surface stress, while precision end grinding ensures square contact and stable spring force.
Applications
- Mining and quarrying
- Road construction and earthmoving
- Landfill and waste handling
- Forestry and heavy clearing
- Demolition and site preparation
Frequently Asked Questions
What is the MOQ for Liebherr bulldozer spring coils?
Standard MOQ is 5 sets. Mixed specifications may be accepted for first trial orders.
What is the delivery time?
Usually 25–35 days after order confirmation or drawing approval. Stock items can ship in 7–10 days.
Can you manufacture by Liebherr part number?
Yes. Provide OEM part number or drawing, and we match dimensions, load rating, and material specification.
What material do you use?
We use 60Si2Mn or 55CrSi spring steel, selected for high fatigue strength and stable elastic recovery.
What is the heat treatment depth?
The spring is fully quenched and tempered; shot peening adds surface compressive stress to a depth of approximately 0.3–0.5 mm.
What is the warranty policy?
We provide a 12-month warranty against manufacturing defects under normal operating conditions.
Can you customize spring coil size?
Yes. We customize wire diameter, coil outer diameter, free length, and spring rate according to drawings or samples.
How do I confirm compatibility with my Liebherr model?
Send machine model, serial number, or existing spring dimensions, and our engineers will verify the correct specification.
Maintenance Guide
- Inspect spring coil for cracks, corrosion, and permanent set during every track service interval.
- Check track sag frequently; incorrect tension accelerates spring fatigue and undercarriage component wear.
- Replace spring coil if free length is below factory tolerance or load loss exceeds 10%.
- Use calibrated compression tooling during installation to avoid coil distortion and personal injury.
- Re-tension track system after replacement and operate machine for 30 minutes before final inspection.