Dingtai manufactures Kato track link assemblies, structural chains connecting track shoes and transmitting machine weight under severe digging loads.
Factory-direct manufacturing supports complete OEM services for global distributors and equipment owners, including assemblies, rails, pins, bushing, and hardware.
Forged link bodies resist cracking under shock loads, reducing downtime. Hardened rail surfaces prevent premature wear in abrasive job sites.
With over 20 years of undercarriage manufacturing, Dingtai operates under ISO9001/SGS quality systems. Every batch is traceable, dimensionally inspected, and certified.
Links use 35MnB steel with deep quenching to HRC 48–55. This hardens the rail surface while maintaining core impact toughness.
Core Selling Points
- Premium 35MnB Material: Boron-alloy steel provides higher tensile strength and wear resistance than standard carbon steel, extending service life under severe digging conditions.
- Deep Quenching/Heat Treatment: Induction hardening reaches HRC 48–55 on rail surfaces, creating a hard outer case without compromising the link core’s impact toughness.
- Global Brand Compatibility: Drop-in replacements match Kato OEM dimensions for HD-series excavators, ensuring correct pitch, bolt holes, and rail gauge.
- 100% QC Inspection: Every assembly undergoes dimensional, hardness, and ultrasonic inspection before packing, eliminating field fitment failures and warranty claims.
Our catalog of Kato Track Link Assembly includes various specifications, fully compatible with Kato excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB high-strength boron steel |
| Rail Surface Hardness | HRC 48–55 |
| Core Impact Hardness | HRC 30–38 |
| Manufacturing Process | Precision forging, CNC machining, induction hardening |
| Pitch Tolerance | ±0.15 mm |
| Certification | ISO9001, SGS material report |
| Warranty | 12 months or 2,000 working hours |
OEM & Customization
We match customer drawings, samples, or part numbers. Custom pitch, rail width, and bushing bores are manufactured to exact OEM tolerances.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Hydraulic Excavator | Kato | HD250, HD308, HD512, HD700, HD820, HD1023, HD1430, HD1880 |
| Other Kato Equipment | Kato | Verify by OEM part number and rail gauge |
Delivery & Logistics
Factory-direct pricing with flexible MOQ supports urgent replacements and scheduled fleet maintenance. We ship worldwide using reinforced steel pallets or wooden crates.
Technical Features
The rail surface is induction-hardened to withstand rollers and idlers, while the pin eye zone remains softer to absorb shock without cracking.
Precision-machined pitch and bushing bores maintain uniform chain length. This reduces uneven sprocket tooth loading and extends overall undercarriage life.
Sealed and lubricated configurations use floating seals to retain oil and exclude abrasive soil inside the pin-bushing joint, lowering internal wear.
Applications
- Mining and quarry overburden removal
- Road construction and site development
- Heavy civil works and demolition
- Forestry and right-of-way clearing
Frequently Asked Questions
What is the MOQ for Kato track link assemblies?
One set is accepted as a trial order. Mixed bulk orders for multiple Kato HD-series part numbers improve freight efficiency and unit pricing.
How long is delivery?
Standard production takes 25–35 days for OEM orders. Stock sizes or common Kato HD series assemblies ship within 7–10 working days.
What heat treatment depth do you achieve?
Induction hardening creates HRC 48–55 on rail surfaces with a hardened case depth of 6–10 mm depending on link size.
What warranty applies?
We provide 12 months or 2,000 working hours against manufacturing defects. Normal wear, impact damage, and improper installation are excluded.
How do I confirm part number matching?
Provide the Kato OEM part number, pitch, rail gauge, and link count. We verify against our engineering database before quotation.
Can you produce reinforced track link assemblies?
Yes. We customize link height, width, plate thickness, and heat treatment for heavy-duty mining or demolition applications.
Maintenance Guide
- Inspect rail wear, bushing cracks, and pin play every 500 hours. Replace links when measurements exceed OEM wear limits or cracking appears.
- Press pins and bushings using proper tooling. Never hammer seal surfaces or pin ends directly; this causes micro-cracks and early failure.
- Verify sprocket pitch alignment before tensioning. Misalignment concentrates load on inner link rails and accelerates sprocket root wear.
- Maintain correct track sag. Over-tensioning increases pin and bushing load, shortens service life, and increases final drive stress.
- Replace both track link assemblies on one side simultaneously. Mismatched pitch causes uneven loading and accelerated undercarriage wear.