Dingtai manufactures JCB carrier rollers, also known as top rollers, which support track weight and guide the crawler undercarriage assembly.
We provide factory-direct manufacturing and full OEM services for global distributors, dealers, and heavy equipment fleet procurement professionals worldwide.
Our carrier rollers resist premature wear, flange cracking, and oil leakage, reducing track derailment risk and minimizing costly equipment downtime.
With over 20 years of production experience, Dingtai maintains ISO9001 and SGS certified quality systems to ensure consistent product reliability.
Premium 35MnB forged steel and deep quenching produce a hardened wear face, extending roller service life in abrasive heavy-duty applications.
Core Selling Points
- Premium 35MnB Material: Forged 35MnB steel provides high tensile strength and impact resistance, preventing roller shell deformation under extreme track loads.
- Deep Quenching/Heat Treatment: Induction hardening creates a uniform hardened layer with HRC 50–55, delivering superior wear resistance across the tread contact surface.
- Global Brand Compatibility: Each JCB carrier roller is dimensionally matched to OEM specifications, ensuring direct replacement interchangeability with JCB JS-series excavators.
- ISO9001/SGS Certified: Our manufacturing processes are ISO9001 certified and SGS inspected, guaranteeing consistent hardness, tolerances, and sealed assembly quality batch after batch.
Our catalog of JCB carrier rollers includes various specifications, fully compatible with JCB excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB forged steel |
| Hardness | HRC 50–55 |
| Heat Treatment | Induction deep quenching / tempering |
| Process | CNC machining + precision grinding |
| Certification | ISO9001 / SGS |
| Warranty | 12 months |
OEM & Customization
Dingtai matches OEM drawings and custom dimensions, producing exact-fit JCB carrier rollers under strict tolerance control to meet aftermarket replacement standards.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Mid-Size Crawler Excavator | JCB | JS130, JS160, JS200, JS220 |
| Large Crawler Excavator | JCB | JS260, JS300, JS360 |
Delivery & Logistics
Dingtai ships factory-direct from Quanzhou, China, offering reliable export packaging, flexible MOQ, and fast global delivery by sea or air.
Technical Features
Each carrier roller uses a forged steel body. Induction hardening penetrates the tread to create a wear-resistant layer for abrasive track loads.
Floating seals prevent dirt ingress while retaining internal lubricant. This closed lubrication system reduces contamination-related failure and extends service intervals.
Precision-machined shaft and bushing geometry ensure smooth rotation under radial load, minimizing vibration and track assembly stress.
Applications
- Mining
- Road Construction
- Quarrying
- Demolition
- Earthmoving
- Forestry
- Pipeline Construction
Frequently Asked Questions
Are these genuine JCB carrier rollers?
No. Dingtai manufactures aftermarket JCB-compatible carrier rollers. They are not genuine JCB products but are engineered to OEM tolerance.
What is the MOQ?
MOQ is 1 piece for sample evaluation. Volume pricing applies to larger orders with flexible quantity breaks.
What is the delivery time?
Standard production takes 15–25 days after deposit confirmation, depending on order quantity and customization requirements.
How deep is the heat treatment?
Tread hardening depth is typically 4–8 mm with surface hardness HRC 50–55, depending on roller specifications.
What warranty do you provide?
Dingtai provides a 12-month warranty against manufacturing defects under normal operating conditions.
How do I ensure correct part number matching?
Provide your JCB OEM part number, machine model, or a dimensional drawing. Our engineers verify interchangeability before production.
Can you produce custom or private-label carrier rollers?
Yes, we offer OEM/ODM service, including custom dimensions, neutral packaging, and customer-branded marking.
Maintenance Guide
- Inspect carrier rollers every 500 operating hours for oil leaks, excessive wear, or abnormal rotation.
- Clean mud and debris from roller frames to prevent packing and accelerated seal damage.
- Check mounting bolts and shaft retention for looseness; torque to specification immediately if movement is detected.
- Replace carrier rollers if tread flat spots exceed 5 mm or if shaft play produces knocking under load.