Dingtai manufactures JCB spring coils, heavy-duty recoil springs that maintain track tension and absorb impact loads in hydraulic excavator undercarriages.
We provide factory-direct supply and complete OEM manufacturing services for global JCB parts distributors, dealers, and equipment repair specialists.
This spring coil prevents sudden track derailment and frame shock damage, reducing unplanned downtime in demanding digging and grading operations.
With over 20 years of undercarriage expertise and ISO9001/SGS certification, Dingtai delivers repeatable quality and dimensional accuracy.
Our JCB spring coils use high-tensile spring steel, controlled hot coiling, deep quenching, and shot peening for superior fatigue resistance.
Core Selling Points
- 20+ Years Experience: Two decades of engineering undercarriage components ensure proven designs, stable supply, and deep knowledge of JCB recoil spring requirements.
- Global Brand Compatibility: Our spring coils match JCB JS series excavators and other major brands, reducing cross-reference time for parts distributors and maintenance teams.
- Deep Quenching/Heat Treatment: Controlled quenching and tempering produce uniform spring hardness, preventing permanent set and coil breakage under continuous shock loads.
- 100% QC Inspection: Every batch undergoes dimensional checks, magnetic particle testing, and load testing to ensure consistent free length and spring rate.
Product Range
Our catalog of JCB Spring Coil includes various specifications, fully compatible with JCB JS-series excavators, 8014/8018/8025 mini excavators, and crawler machines.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 60Si2Mn high-tensile spring steel |
| Hardness | HRC 42–50 |
| Process | Hot coiling, controlled quenching, tempering, shot peening |
| Certification | ISO9001 / SGS |
| Warranty | 12 months from shipment |
OEM & Customization
Custom JCB spring coils are produced to sample or drawing, matching free length, wire diameter, coil count, and spring rate.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Crawler Excavator | JCB | JS130, JS160, JS200, JS220, JS240, JS260, JS300, JS360 |
| Mini Excavator | JCB | 8014, 8018, 8025, 8030 |
Delivery & Logistics
Factory-direct pricing with flexible MOQ, reliable export packaging, and shipping by sea, air, or express according to customer location and urgency.
Technical Features
The coil spring stores and releases energy to keep idlers positioned, maintaining proper track tension during forward and reverse travel.
High-tensile 60Si2Mn steel and shot peening reduce surface stress, preventing fatigue cracks, permanent set, and sudden recoil assembly failure.
Controlled free length and spring rate ensure exact fit inside JCB track adjusters, avoiding coil bind and maintaining recoil absorption.
Applications
- Mining operations
- Road construction
- Quarrying and aggregate handling
- Demolition and site preparation
- Earthmoving and heavy excavation
Frequently Asked Questions
Q: What is the MOQ for JCB spring coils?
A: Standard stock MOQ is 1–10 pieces; custom production usually requires 20–50 pieces depending on drawing specifications.
Q: How long is delivery?
A: Stock items ship in 3–7 days. Custom orders ship in 25–35 days after drawing approval and deposit.
Q: What material is used for JCB spring coils?
A: 60Si2Mn or equivalent high-tensile spring steel, through-hardened to HRC 42–50 for consistent spring force.
Q: Can you match my JCB part number?
A: Yes. Provide the OEM part number or drawing; our engineers verify free length, wire diameter, coil count, and spring rate.
Q: What is the heat treatment process?
A: Hot coiling is followed by controlled quenching, tempering, and shot peening to improve fatigue resistance and prevent breakage.
Q: What warranty do you provide?
A: We offer a 12-month warranty from shipment against material defects and manufacturing issues under normal operating conditions.
Q: Do you offer OEM/custom packaging?
A: Yes, we provide OEM labeling, neutral packaging, and custom box or pallet specifications for distributors and fleets.
Q: How do you inspect quality?
A: 100% dimensional inspection, magnetic particle testing, and batch load testing ensure consistent performance and OEM fit.
Maintenance Guide
- Installation: Verify free length and spring rate before installation; inspect coil seating surfaces and remove dirt, rust, or old grease.
- Inspection: Every 500 operating hours, check for coil cracks, corrosion, abrasion, or reduced free length that indicates fatigue or permanent set.
- Replacement: Replace spring coils in pairs when visible damage, coil bind, or track tension loss occurs.