We manufacture Yanmar excavator undercarriage parts including track rollers, idlers, sprockets, and track chains to support your machine’s weight and mobility.
Operating a factory-direct business, we provide comprehensive OEM manufacturing services to global equipment owners and dealers seeking reliable replacement components.
Our parts are engineered to resist premature wear and catastrophic breakage, minimizing costly downtime for your Yanmar excavator fleet.
With over 20 years of manufacturing experience and ISO9001/SGS certifications, Dingtai delivers consistent quality that procurement directors trust.
We use 35MnB steel with deep quenching heat treatment to achieve high surface hardness and a tough, wear-resistant core for extended service life.
- 20+ Years Experience – Over two decades of focused undercarriage manufacturing ensures deep technical knowledge and stable supply reliability.
- Premium 35MnB Material – We forge components from high-strength 35MnB steel, providing superior tensile strength and resistance to shock loads.
- Deep Quenching/Heat Treatment – Proprietary heat treatment delivers a hardened case up to 5 mm depth, significantly extending wear life under abrasive conditions.
- ISO9001/SGS Certified – Our quality system meets international standards, with full traceability and independent third-party verification of material and process integrity.
Our catalog of Yanmar Excavator Undercarriage Parts includes various specifications, fully compatible with Yanmar excavators such as VIO and B series.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB alloy steel |
| Surface Hardness HRC | 50–55 |
| Process | Precision forging + CNC machining + deep quenching |
| Certification | ISO9001, SGS |
| Warranty | 12 months or 2,000 hours |
2. OEM & Customization
We customize parts to your exact drawings and dimensions, strictly adhering to OEM standards for perfect fit and long-term durability.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Mini Excavator | Yanmar | VIO17, VIO35, VIO55, SV08 |
| Compact Excavator | Yanmar | B27, B37, B50, VIO80 |
4. Delivery & Logistics
Enjoy factory-direct pricing with flexible MOQ. We ensure reliable global shipping via sea or air freight to your nearest port.
Technical Features
Track rollers feature a floating seal design that prevents dirt ingress and retains lubricant, effectively doubling service life in muddy environments.
Sprockets are precision-forged and CNC-machined to ensure perfect chain engagement, reducing track wear and vibration under load.
Deep quenching creates a hardened case that resists abrasive wear from sand, rock, and clay, maintaining structural integrity in demanding excavation.
Applications
- Mining
- Road Construction
- Quarrying
- Demolition
- Utility Work
- Landscaping
Frequently Asked Questions
- What is the minimum order quantity (MOQ)?
- MOQ is flexible; typical orders start at 20 pieces per part number, but trial orders are welcome.
- What is your typical delivery time?
- Standard production takes 15–25 days after deposit. Express shipping adds 3–7 days by air.
- How deep is the heat treatment on track rollers?
- The hardened case depth is 4–6 mm, verified by ultrasonic testing to ensure consistent wear resistance.
- What warranty do you provide?
- We offer 12 months or 2,000 hours warranty against manufacturing defects, whichever comes first.
- How do I match your parts to my Yanmar OEM number?
- Send us the OEM part number or machine model; our engineers cross-reference instantly and provide a direct replacement.
- Are your parts compatible with other aftermarket chains?
- Yes, our sprockets and rollers are dimensionally matched to standard Yanmar chains and also work with premium aftermarket brands.
- Can you provide material test certificates?
- Mill certificates and SGS reports are supplied with every shipment to verify 35MnB composition and hardness.
Maintenance Guide
- Inspect rollers for oil leaks and excessive radial play every 250 hours; repair immediately to avoid track misalignment.
- Measure track sag on a flat surface and adjust tension to the Yanmar specification for optimal sprocket engagement.
- Replace sprockets when tooth tips become sharp or worn over 30% to prevent accelerated chain link damage.
- Always install new seals and bolts during service; contamination from old seals leads to premature failure.