Dingtai manufactures Yanmar carrier rollers, top rollers that support the upper track chain and maintain proper track alignment during operation.
We are a factory-direct manufacturer offering complete OEM manufacturing services for Yanmar undercarriage replacement parts to global distributors and equipment owners.
Our carrier rollers resist flange wear and track derailment, reducing downtime and extending overall undercarriage service life.
With over 20 years of engineering experience and ISO9001/SGS certified production, Dingtai delivers consistent, measurable quality for demanding job site conditions.
Each roller uses premium 35MnB alloy steel and deep quenching technology, achieving high surface hardness and long-term structural integrity under continuous impact.
Core Selling Points
- Premium 35MnB Material: Forged from high-grade 35MnB alloy steel for excellent tensile strength and resistance to impact, bending, and track chain stress.
- Deep Quenching/Heat Treatment: Induction hardened surfaces create a deep hardened layer, preventing premature peeling and spalling in abrasive working conditions.
- Global Brand Compatibility: Manufactured to match Yanmar OEM dimensions, ensuring direct bolt-on replacement without track frame modification or additional machining.
- 100% QC Inspection: Every carrier roller passes dimensional checks, hardness testing, and seal integrity inspection before shipment to ensure field reliability.
Our catalog of Yanmar Carrier Roller includes various specifications, fully compatible with Yanmar mini excavators, compact excavators, and tracked carriers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 40MnB alloy steel |
| Surface Hardness | HRC 52–58 (tread surface) |
| Shaft Hardness | HRC 50–55 |
| Manufacturing Process | Forging, CNC machining, deep quenching, precision grinding |
| Certification | ISO9001:2015, SGS |
| Warranty | 12 months or 1,500 operating hours |
2. OEM & Customization
We customize carrier rollers to your drawings or samples, matching Yanmar OEM dimensions, bolt patterns, and hardness specifications.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Compact Excavator | Yanmar | ViO17, ViO25, ViO35, ViO55 |
| Mini Excavator | Yanmar | SV08, SV26, SV40, SV100 |
| Crawler Carrier / Compact Excavator | Yanmar | B27, B37, B50, Vio80 |
4. Delivery & Logistics
We ship factory-direct from Quanzhou with heavy-duty export packaging. MOQ is flexible for trial orders and bulk container shipments worldwide.
Technical Features
Carrier rollers use a floating seal system and heavy-duty tapered roller bearings to retain lubrication and block dirt, mud, and moisture entry.
The roller shell is precision machined from 35MnB steel and induction hardened to create a deep wear-resistant layer that withstands constant track chain contact.
A generous oil chamber and dual-protection seal design reduce heat buildup, extending service intervals in demanding excavation conditions.
Applications
- Utility and underground construction
- Residential foundation and site preparation
- Road construction and landscaping
- Demolition and material handling
- Agricultural drainage and forestry work
Frequently Asked Questions
What is the MOQ for Yanmar carrier rollers?
Standard MOQ is 2–4 pieces for trial orders. Bulk container quantities receive preferential factory pricing.
What is the production and delivery time?
In-stock models ship within 7–10 days. Custom production typically requires 25–35 days depending on order quantity.
How deep is the heat treatment?
Heat treatment depth typically reaches 4–8 mm depending on roller size, with surface hardness of HRC 52–58.
What warranty is included?
We provide a 12-month or 1,500-hour warranty against manufacturing defects under normal operating conditions.
Can you match Yanmar OEM part numbers?
Yes. Provide your Yanmar OEM part number or drawing, and our engineers will cross-reference dimensions and specifications.
Do you offer sample orders for quality verification?
Yes. Sample orders are available before bulk production to confirm material, hardness, and installation fit.
Are these rollers compatible with standard Yanmar track chains?
Yes. Carrier rollers are produced to standard Yanmar track chain pitch and rail dimensions for reliable integration.
Maintenance Guide
- Installation: Clean the mounting surface, torque bolts to Yanmar specifications, and confirm the roller rotates freely before track assembly.
- Inspection: Check for oil leaks, flange wear, and abnormal noise every 250 operating hours to catch early failure signs.
- Replacement Interval: Replace carrier rollers when tread surface wear exceeds 20% or when bearing play causes visible track wobble.