Dingtai manufactures Mitsubishi carrier rollers that support the upper track frame and guide track chain in excavator undercarriage systems.
We are a factory-direct manufacturer providing complete OEM and replacement carrier roller production for North American, European, and Asia-Pacific dealers.
Our hardened rollers resist flange wear, prevent track derailment, and eliminate premature shaft failure in high-impact, high-load working conditions.
With more than 20 years’ experience and ISO9001/SGS certified processes, Dingtai delivers consistent metallurgy, dimensional accuracy, and repeatable performance.
Carrier roller shells use 35MnB steel with deep high-frequency quenching, achieving HRC 50-55 surface hardness for extended service life.
Core Selling Points
- Premium 35MnB Material: Roller shells are forged from 35MnB steel for high tensile strength, impact resistance, and consistent wear characteristics across production batches.
- Deep Quenching/Heat Treatment: Deep high-frequency quenching hardens the tread to HRC 50-55 while preserving a tough core to resist spalling and cracking.
- OEM Capabilities: We produce rollers according to customer drawings, samples, or OEM part numbers, matching boss dimensions, shaft diameter, and seal specifications.
- ISO9001/SGS Certified: Each production batch follows ISO9001 controls and optional SGS material certification, ensuring full traceability and quality assurance.
Our catalog of Mitsubishi Carrier Roller includes various specifications, fully compatible with Mitsubishi MS110, MS180, MS260, and other excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Specification | Details |
|---|---|
| Material | 35MnB forged shell, 40Cr steel shaft |
| Surface Hardness | HRC 50-55 tread, HRC 30-38 shaft |
| Heat Treatment | Deep high-frequency quenching, tempered core |
| Seal Type | Floating oil seal / double-lip seal |
| Certification | ISO9001:2015, SGS material certificate |
| Warranty | 12 months or 2,000 working hours |
2. OEM & Customization
Dingtai matches OEM drawings and samples precisely, customizing shaft length, boss spacing, seal arrangement, and painting to your specifications.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Hydraulic Excavator | Mitsubishi | MS110, MS120, MS140, MS180, MS210, MS260, MS300 |
| Crawler Bulldozer | Mitsubishi | BD2G, BS3, BS4 |
4. Delivery & Logistics
Factory-direct pricing with reliable ocean freight from Quanzhou/Xiamen port. Standard production time is 15-25 days; sample orders and mixed containers are accepted.
Technical Features
Each carrier roller uses a double-lip floating seal system. This keeps lubricating oil inside while blocking abrasive dust, mud, and moisture from entering.
Heat treatment is deep and localized at the tread surface, producing a hard wear-resistant shell over a ductile core to prevent impact fracture.
The shaft and bushing are precision ground. This controls radial clearance, reduces vibration, and extends track chain service life.
Applications
- Mining: Supports high-hour excavators on abrasive rock and hard ore sites.
- Road Construction: Maintains track alignment during continuous grading and demolition work.
- Quarrying: Withstands dust, stone impact, and high-load material handling.
- Heavy Civil Works: Suitable for deep excavation, foundation work, and pipeline projects.
Frequently Asked Questions
What is the minimum order quantity for Mitsubishi carrier rollers?
MOQ is one unit for sample evaluation. Bulk orders typically start at 10-50 units depending on model and customization requirements.
How long is production and delivery?
Standard production is 15-25 days. Ocean freight to the US takes 20-35 days depending on the destination port and shipping schedule.
What heat treatment depth do you achieve?
Tread quenching depth is 6-10 mm after high-frequency heating, depending on roller diameter and customer specification.
What warranty policy do you provide?
We provide 12 months or 2,000 working hours warranty against manufacturing defects. Normal wear, misuse, or accident damage is not covered.
Can you match my OEM part number?
Yes. Send the OEM part number or drawing. We cross-reference dimensions and supply exact interchangeable Mitsubishi carrier rollers.
Do you provide SGS material certification?
Yes, optional SGS or mill certificates are available for chemical composition and mechanical properties of raw materials.
Maintenance Guide
- Installation: Verify shaft boss dimensions and bolt torque before mounting; misalignment causes uneven roller wear and track drift.
- Lubrication Check: Inspect oil level and seal condition during routine service. Low oil level leads to bushing seizure and tread damage.
- Wear Inspection: Replace carrier rollers when tread wear exceeds 30% or when flanges show sharp edges, cracks, or deep scoring.
- Replacement Interval: Exchange carrier rollers in sets to maintain uniform track height and avoid accelerated chain link wear.