Dingtai manufactures heavy-duty Case carrier rollers, the undercarriage components that support track frame weight and guide upper track alignment.
We operate as a factory-direct supplier, offering full OEM manufacturing services with complete dimensional control for global equipment distributors and fleets.
Our carrier rollers resist flange wear and shaft fatigue, reducing unscheduled downtime and preventing track chain misalignment in demanding conditions.
With over 20 years of engineering experience and ISO9001/SGS-certified processes, Dingtai delivers consistent quality, material traceability, and reliable batch repeatability.
Each roller uses premium 35MnB steel and deep induction hardening to achieve optimal hardness depth and impact resistance under continuous load.
Core Selling Points
- Premium 35MnB Material: Forged shells use high-grade 35MnB steel, delivering core toughness and wear resistance for extended service intervals.
- Deep Quenching/Heat Treatment: Induction-hardened treads and shafts achieve controlled HRC values and hardened depth, preventing surface spalling under heavy compaction.
- Global Brand Compatibility: Carrier rollers are precision-machined to match Case and major OEM mounting dimensions without field modification.
- 100% QC Inspection: Every unit undergoes dimensional checks, hardness testing, and seal pressure verification before release.
Our catalog of Case Carrier Roller includes various specifications, fully compatible with Case excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 40Mn2 forged steel |
| Tread Hardness | HRC 48–55 |
| Shaft Hardness | HRC 52–58 |
| Hardened Depth | 4–8 mm |
| Manufacturing Process | Precision forging/casting + CNC machining |
| Certification | ISO9001 / SGS |
| Warranty | 12 months or 2,000 hours |
OEM & Customization
Dingtai matches customer drawings, bearing tolerances, and mounting dimensions exactly. We manufacture OEM-equivalent Case carrier rollers with custom shaft, collar, and surface requirements.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Excavator | Case | CX130, CX210, CX240, CX350 |
| Bulldozer | Case | 650M, 850M, 1150M, 1650M |
Delivery & Logistics
We provide factory-direct pricing, reliable export packaging, and flexible MOQ from trial orders to mixed-container shipments through major ports.
Technical Features
Carrier roller shafts ride on heavy-duty tapered roller bearings and are protected by floating seals that exclude dirt while retaining lubrication.
Precision radial and axial clearances maintain track chain alignment; double-flanged or single-flange shells prevent track link side wear.
Deep-hardened tread surfaces resist spalling from constant contact with the track chain, extending undercarriage life in high-impact operations.
Applications
- Mining
- Road Construction
- Quarrying
- Demolition
- Forestry
- Heavy Earthmoving
Frequently Asked Questions
Q: What is the minimum order quantity for Case carrier rollers?
A: MOQ is 1 piece for stock verification, with volume discounts from 10 units.
Q: Can Dingtai match original Case part numbers?
A: Yes, provide your OEM part number or drawing; we cross-reference and manufacture to required specifications.
Q: What material and hardness do you use?
A: 35MnB forged steel, induction hardened to HRC 48–55 with 4–8 mm hardened depth.
Q: What is the delivery time?
A: Standard models ship in 7–15 days; custom production typically requires 25–30 days.
Q: Do you offer a warranty?
A: 12 months or 2,000 hours against manufacturing defects.
Q: Are these compatible with aftermarket undercarriage systems?
A: Yes, dimensions are matched to OEM Case and common aftermarket track frames.
Maintenance Guide
- Inspect tread and flange wear every 250 operating hours to detect early surface damage.
- Check roller ends for oil leakage, seal failure, or excessive end play.
- Torque mounting bolts to OEM specification during installation to prevent loosening.
- Replace carrier rollers when flange loss exceeds 20% or shaft end play develops to prevent track damage.
- Always replace rollers in sets to maintain track alignment and load distribution.