We produce complete Kubota excavator undercarriage parts—rollers, idlers, sprockets, links—that support machine weight and provide reliable traction.
As a factory-direct supplier, we offer comprehensive OEM manufacturing services, delivering cost-effective, high-quality undercarriage solutions to global distributors and contractors.
Our heavy-duty components resist premature wear and breakage, dramatically reducing unplanned downtime and keeping your Kubota fleet operational in tough conditions.
Backed by over 20 years of engineering experience and ISO9001/SGS certifications, we guarantee component reliability and consistent quality for every batch.
We use premium 35MnB forged steel and advanced induction deep-quenching to achieve superior surface hardness and exceptional impact toughness.
Core Selling Points
- Premium 35MnB Material: Rollers and idlers forged from 35MnB steel deliver high tensile strength and excellent crack resistance under extreme working loads.
- Deep Quenching/Heat Treatment: Induction hardening achieves a 50–55 HRC surface layer and a tough core, maximizing wear life and impact durability.
- ISO9001/SGS Certified: Rigorous quality management and third-party inspection ensure every component meets international standards for dimensional accuracy and performance.
- Lubrication Circulation: Floating seal design in track rollers maintains permanent lubricant and blocks contaminants, extending service intervals and reliability.
Our catalog of Kubota excavator undercarriage parts includes various specifications, fully compatible with Kubota mini-excavators, compact excavators, and compact track loaders.
Why Choose Dingtai?
1. Production Technical Parameters
| Material | Hardness HRC | Process | Certification | Warranty |
|---|---|---|---|---|
| 35MnB forged steel | 50–55 (surface) | Forging → CNC Machining → Deep Quenching | ISO9001, SGS | 12–18 months |
2. OEM & Customization
We accurately replicate your samples or drawings, customizing key dimensions and bolt patterns while maintaining strict OEM tolerance standards for Kubota machines.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Mini Excavator | Kubota | KX018-4, KX057-5, U17, U35, K008-3 |
| Compact Track Loader | Kubota | SVL75-2, SVL90-2 |
4. Delivery & Logistics
We provide reliable ocean and air freight, factory-direct pricing, and flexible MOQ starting from 1–10 pieces per item, ensuring fast order fulfillment.
Technical Features
Our track rollers incorporate a lifetime lubricated floating seal that eliminates daily greasing, prevents dust ingress, and ensures smooth rotation even in abrasive environments.
Induction hardening of the roller tread to 50–55 HRC, combined with a ductile core, delivers outstanding abrasion resistance without the risk of surface spalling.
Idler and sprocket bushings use bimetal technology with a steel backing and sintered bronze layer for low friction and high load capacity.
Applications
- Residential and commercial construction
- Road repair and bridge maintenance
- Landscaping and site preparation
- Utility trenching for water, gas, and telecom
- Agricultural drainage and farm maintenance
- Demolition and recycling
Frequently Asked Questions
- 1. What is the minimum order quantity (MOQ)?
- We maintain flexible MOQ, typically 1–10 pieces per part number, ideal for both small repairs and bulk stocking orders.
- 2. How long is the typical delivery time?
- Standard lead time is 15–30 days after order confirmation, depending on order volume and customization requirements.
- 3. What is the heat treatment depth of your rollers?
- Induction hardening achieves a case depth of 5–8 mm, providing superior wear resistance while preserving core toughness.
- 4. Do you offer a warranty?
- Yes, we provide a 12-month warranty against material and manufacturing defects, with extension options available for long-term contracts.
- 5. Can you match Kubota OEM part numbers?
- Absolutely. We manufacture to exact OEM part numbers, ensuring 100% interchangeability with Kubota undercarriage systems.
- 6. What material do you use for undercarriage components?
- Main components are made from 35MnB forged steel, selected for its high fatigue strength and excellent hardenability.
- 7. Are SGS or other third-party inspection reports available?
- Yes, we can provide SGS reports, dimensional inspection charts, and material certificates upon request before shipment.
Maintenance Guide
- Check track tension regularly; adjust sag to manufacturer specification to prevent accelerated pin and bushing wear.
- Inspect rollers and idlers monthly for oil leakage or excessive radial play; replace if movement exceeds tolerance.
- Keep undercarriage clean from mud and debris to reduce abrasive wear and corrosion on metal surfaces.
- Monitor sprocket teeth for sharpening—replace when wear reaches 10–15% of original profile to avoid chain damage.
- Lubricate only serviceable components; sealed track rollers require no greasing. Over-greasing can damage seals.