Dingtai manufactures heavy-duty John Deere recoil spring coils engineered to maintain precise track tension and absorb severe undercarriage shock loads.
Factory-direct manufacturing supports complete OEM services, custom dimensions, sample validation, and stable bulk supply for global equipment distributors.
Our spring coils resist fatigue and coil binding, reducing track derailment risk, maintenance downtime, and premature undercarriage component wear.
With over 20 years of heavy machinery parts production, Dingtai holds ISO9001 and SGS certifications, ensuring repeatable quality for demanding operations.
Selected 35MnB-grade alloy steel and deep quenching/tempering processes deliver consistent spring force and extended service life under impact loading.
Core Selling Points
- Global Brand Compatibility: Precision-engineered to match John Deere OEM spring coil dimensions, coil count, and load ratings across dozer and excavator series.
- Premium 35MnB Material: High-tensile 35MnB alloy steel provides superior fatigue resistance and impact absorption under heavy cyclic track loads.
- Deep Quenching/Heat Treatment: Controlled deep quenching and tempering achieve uniform hardness, preventing surface cracking, coil sag, and premature spring failure.
- ISO9001/SGS Certified: Certified quality systems and independent material reports verify every batch meets documented mechanical, dimensional, and process standards.
John Deere Spring Coil Catalog
Our catalog of John Deere Spring Coil includes various specifications, fully compatible with John Deere excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 60Si2Mn high-tensile alloy steel |
| Hardness | HRC 44–52 after controlled tempering |
| Process | CNC coiling, shot peening, magnetic particle inspection |
| Certification | ISO9001 / SGS material reports |
| Warranty | 12 months or 2,000 working hours |
2. OEM & Customization
We manufacture from customer drawings or samples, matching OEM dimensions, coil count, and load ratings under strict process control and final inspection.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Dozer | John Deere | 450H, 550K, 650K, 700K, 850K |
| Excavator | John Deere | 130G, 160G, 200D, 350G, 470G |
4. Delivery & Logistics
Factory-direct pricing, flexible MOQ, and reliable ocean or express shipping support planned maintenance programs and urgent replacement orders.
Technical Features
The spring coil works inside the track adjuster/recoil assembly, absorbing front idler shock loads and protecting final drives from impact damage.
Shot peening introduces compressive stress on the coil surface, delaying fatigue cracks and improving service life under cyclic loading.
Precision-ground ends ensure stable coil seating, preventing lateral deflection and uneven track tension in abrasive jobsite conditions.
Applications
- Mining
- Road Construction
- Quarrying
- Demolition
- Forestry
Frequently Asked Questions
1. What is the MOQ for John Deere spring coils?
Standard MOQ is 10 pieces per part number. Trial sample orders are available before bulk purchase.
2. What is the delivery time?
Stocked models ship in 7–10 days. Custom production generally takes 25–35 days depending on quantity.
3. What heat treatment depth do you achieve?
Controlled deep quenching hardens the full cross-section to specified depth, typically HRC 44–52 after tempering.
4. What is the warranty policy?
We provide a 12-month or 2,000-hour warranty against material and manufacturing defects under normal operating conditions.
5. Can you match John Deere part numbers?
Yes. Send OEM part numbers or drawings, and we verify dimensions, coil count, and load rating before production.
6. Do you offer custom spring coil sizes?
Yes, we manufacture non-standard dimensions and load ratings for rebuilt undercarriage or special application requirements.
Maintenance Guide
- Inspect spring coils for cracks, corrosion, or coil binding during regular track tension checks.
- Verify track sag according to John Deere specifications; over-tensioning accelerates spring fatigue and front idler wear.
- Replace spring coils in pairs when visible deformation, reduced free height, or recoil function loss is detected.
- During installation, seat coil ends flat and torque track adjuster hardware to OEM specifications.