Dingtai manufactures Kato-compatible track rollers—the primary undercarriage components that support excavator weight, guide track chain movement, and maintain track alignment.
Factory-direct supplier. Dingtai provides comprehensive OEM manufacturing services, delivering Kato track roller assemblies to distributors and equipment owners worldwide.
Our track rollers prevent premature undercarriage wear and unplanned downtime, solving common breakage issues in demanding excavation, mining, and construction environments.
With 20+ years of manufacturing experience and ISO9001/SGS certifications, Dingtai delivers repeatable quality and documented reliability for critical undercarriage parts.
We use 35MnB steel and deep quenching heat treatment to achieve high surface hardness, core toughness, and fatigue resistance under impact loads.
Core Selling Points
- Premium 35MnB Material: Forged from 35MnB steel, Kato track rollers provide ideal hardness, impact resistance, and fatigue strength for severe undercarriage service.
- Deep Quenching/Heat Treatment: Deep quenching hardens the roller shell and tread surface to HRC 50–58, reducing surface wear and extending service intervals under abrasive conditions.
- 100% QC Inspection: Every track roller undergoes dimensional inspection, hardness testing, and seal leak checks before shipment, ensuring zero-defect delivery for replacement markets.
- Global Brand Compatibility: Our Kato track rollers match OEM mounting dimensions and part numbers, simplifying direct replacement across multiple Kato excavator series.
Product Grid
Our catalog of Kato Track Roller includes various specifications, fully compatible with Kato excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB forged roller shell; 40Cr alloy steel shaft |
| Surface Hardness | HRC 50–58 |
| Heat Treatment | Deep quenching + tempering |
| Manufacturing Process | Precision forging, CNC machining, assembly |
| Seal Type | Floating seal / lifetime lubricated |
| Certification | ISO9001 / SGS |
| Warranty | 12 months or 2,000 hours |
OEM & Customization
We match customer drawings, custom dimensions, and strict OEM standards, producing Kato track rollers with exact part number and mounting compatibility.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Crawler Excavator | Kato | HD-250, HD-400, HD-550, HD-700, HD-820, HD-900, HD-1023, HD-1430, HD-1880 |
Delivery & Logistics
Dingtai offers factory-direct pricing, reliable shipping, and flexible MOQ from 1 to 50 units, supporting urgent replacement orders and large annual contracts.
Technical Features
Each Kato track roller uses a floating seal design. Hardened seal rings maintain oil film integrity and block abrasive mud ingress during articulation.
The roller shaft is supported by bimetal bushings. This design reduces friction, distributes load evenly, and extends service life under high-impact conditions.
Deep quenching creates a martensitic surface layer. The hard wear-resistant shell combines with a tough core to resist surface fatigue and cracking.
Applications
- Mining: Continuous heavy excavation, ore loading, and haul road maintenance.
- Road Construction: Subgrade preparation, trenching, slope work, and asphalt demolition.
- Quarrying: Abrasive aggregate handling, bench excavation, and rock face cleanup.
- Demolition: High-impact concrete processing and structural steel handling.
Frequently Asked Questions
- Q: What is the minimum order quantity for Kato track rollers?
- A: MOQ is 1–10 units for stock specifications; custom OEM orders may require 20–50 units based on part number.
- Q: What is the delivery time?
- A: Stock rollers ship in 7–15 days. Custom production orders typically require 25–35 days after drawing confirmation.
- Q: How deep is the heat treatment?
- A: Hardened depth is 5–8 mm on roller tread and flange surfaces, controlled to HRC 50–58.
- Q: What warranty policy do you provide?
- A: We provide 12 months or 2,000 operating hours against manufacturing defects under normal working conditions.
- Q: Can you match Kato part numbers?
- A: Yes, we manufacture by OEM part number, engineering drawing, or physical sample to ensure exact dimensional compatibility.
- Q: What material is used in the rollers?
- A: Roller shells are 35MnB steel; shafts are 40Cr alloy steel. Floating seals from qualified brands are used for leak prevention.
- Q: How is quality controlled?
- A: Each roller passes dimensional inspection, hardness testing, and seal leak checks before shipment.
Maintenance Guide
- Installation: Clean mounting bores and tighten track bolts to OEM torque. Confirm roller rotation and track tension after installation.
- Lubrication: Do not open sealed rollers. Factory oil is lifetime-charged; inspect weekly for leakage and replace any leaking unit immediately.
- Wear Inspection: Measure tread wear, flange thickness, and shaft end play every 250 service hours. Compare against OEM limits to schedule replacement.
- Replacement: Replace rollers in matched sets when average tread wear exceeds 80% or when multiple rollers show oil loss. Prevents track chain damage.