Dingtai manufactures Kato sprockets as critical undercarriage components that transfer drive torque to track chains, ensuring stable excavator movement.
We operate factory-direct manufacturing with complete OEM services, supplying replacement Kato sprockets to distributors and equipment owners worldwide.
Our sprockets resist premature tooth wear and breakage, reducing unplanned downtime in demanding excavation and earthmoving applications.
With over 20 years of engineering experience, Dingtai holds ISO9001 and SGS certifications, delivering consistent quality and verified production traceability.
Each sprocket uses premium 35MnB steel and deep induction hardening to achieve optimal hardness, extending service life under heavy loads.
Core Selling Points
- Global Brand Compatibility: Direct replacement for Kato excavator models, matching OEM tooth profiles and bolt patterns for straightforward installation.
- Premium 35MnB Material: Manufactured from high-grade 35MnB steel, delivering superior tensile strength and resistance to impact and abrasive wear.
- Deep Quenching/Heat Treatment: Induction-hardened tooth surfaces reach 50–55 HRC while retaining a tough core to prevent cracking under shock loads.
- 100% QC Inspection: Every sprocket undergoes dimensional checks and hardness testing before shipment, ensuring consistent performance and minimal field failures.
Our catalog of Kato Sprockets includes various specifications, fully compatible with Kato excavators.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 40Mn2 Alloy Steel |
| Tooth Surface Hardness | HRC 50–55 |
| Core Hardness | HRC 28–35 |
| Manufacturing Process | Precision Casting / Forging, CNC Machining |
| Heat Treatment | Induction Hardening & Tempering |
| Certification | ISO9001, SGS |
| Warranty | 12 Months / 2,000 Hours |
2. OEM & Customization
Dingtai matches customer drawings, custom dimensions, and Kato OEM standards to produce sprockets with precise tooth geometry and mounting compatibility.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Excavator | Kato | HD250, HD400, HD450, HD512, HD550, HD700, HD820, HD880, HD1023, HD1430 |
4. Delivery & Logistics
We offer factory-direct pricing with flexible MOQ and reliable export packaging. Standard production lead times support scheduled maintenance and urgent replacement needs.
Technical Features
The sprocket tooth profile is precision machined to match Kato track chain pitch, ensuring smooth engagement and reduced impact stress.
Induction hardening creates a hard wear-resistant tooth surface while the core remains ductile, preventing brittle fractures under heavy excavator loads.
Segmented sprocket designs allow replacement of worn tooth rings without removing the entire hub, lowering maintenance cost and downtime.
Applications
- Mining
- Road Construction
- Quarrying
- Demolition
- Heavy Earthmoving
Frequently Asked Questions
What is the minimum order quantity for Kato sprockets?
MOQ is typically 1–4 pieces for standard models; larger quantities receive better factory pricing.
How long is delivery time?
Standard models ship in 7–15 days. Custom production requires 25–35 days depending on specifications and order quantity.
How deep is the heat treatment on sprocket teeth?
Induction hardening depth ranges from 4–8 mm on tooth contact surfaces, achieving HRC 50–55.
What warranty do you provide?
We offer 12 months or 2,000 operating hours against manufacturing defects under normal working conditions.
Can you match Kato part numbers?
Yes. Send your OEM part number or drawing; we cross-reference and produce a direct replacement.
Are your sprockets compatible with aftermarket track chains?
Yes, we machine tooth profiles to standard Kato pitch specifications for reliable aftermarket chain matching.
Maintenance Guide
- Inspect sprocket tooth profiles every 500 operating hours. Replace when teeth show hooked, sharp, or asymmetric wear.
- Ensure track tension is within manufacturer specification to prevent uneven sprocket and chain wear.
- Torque mounting bolts to Kato specifications and recheck after initial 50 hours of operation.
- Replace sprockets in pairs or together with track chains when wear exceeds 20% to maintain drive efficiency.