Dingtai manufactures heavy-duty aftermarket Sumitomo track guards that shield undercarriage components from rock impact and abrasive debris ingress.
As a factory-direct manufacturer, we provide complete OEM production services for global distributors, ensuring consistent supply and competitive replacement-part pricing.
Precision-fit guards prevent premature track link and roller wear by deflecting debris, reducing unplanned downtime and expensive undercarriage maintenance.
With 20+ years of engineering experience and ISO9001/SGS-certified processes, Dingtai delivers repeatable dimensional accuracy, quality, and traceability for critical undercarriage parts.
Precision-formed 35MnB steel with deep induction quenching achieves HRC 45-52 surface hardness and a tough core for superior impact fatigue resistance.
Core Selling Points
- 20+ Years Experience: Over 20 years of undercarriage component manufacturing ensures proven metal forming, welding, and heat treatment control for demanding earthmoving applications.
- Premium 35MnB Material: High-tensile 35MnB boron steel balances hardness and ductility, resisting cracks and deformation under repeated rock impact and heavy machine loads.
- Deep Quenching/Heat Treatment: Induction quenching creates a martensitic surface of HRC 45-52 and a tough core, extending service life in abrasive, high-impact conditions.
- 100% QC Inspection: Every guard undergoes dimensional verification, hardness testing, and weld inspection before packing, ensuring consistent fit, bolt alignment, and long-term reliability.
Our catalog of Sumitomo Track Guard includes various specifications, fully compatible with Sumitomo excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB high-tensile boron steel |
| Surface Hardness | HRC 45-52 after induction hardening |
| Processing | CNC cutting, precision bending, MIG welding, induction quenching |
| Certification | ISO9001:2015 quality system, SGS material inspection |
| Warranty | 12 months or 2,000 operating hours against manufacturing defects |
OEM & Customization
We match original drawings, custom dimensions, and bolt patterns, strictly adhering to Sumitomo OEM mounting standards for accurate direct replacement.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Hydraulic Excavator | Sumitomo | SH120, SH200, SH210, SH240, SH300, SH350HD, SH480HD |
| Crawler Dozer | Sumitomo | Custom track frame models per OEM drawing |
Delivery & Logistics
Reliable global shipping, factory-direct pricing, and flexible MOQ from 20 pieces per part number support both trial orders and bulk replacement programs.
Technical Features
The sloped outer face deflects rock and debris away from track links and rollers, preventing material packing that accelerates undercarriage wear.
Induction hardening creates a deep martensitic case with HRC 45-52 surface hardness while preserving a ductile 35MnB core for impact energy absorption.
CNC-cut mounting brackets maintain OEM bolt-hole alignment, allowing direct installation without field welding or modification to the track frame.
Applications
- Open-pit mining
- Quarrying and aggregate processing
- Heavy road construction
- Demolition and site clearing
- Forestry and land reclamation
Frequently Asked Questions
Q: What is the MOQ for Sumitomo track guards?
A: Standard MOQ is 20 pieces per part number. Mixed Sumitomo models can be combined to reach full container quantity.
Q: What is the delivery time?
A: Standard production takes 25-35 days after drawing confirmation and deposit. Stocked sample quantities may ship sooner.
Q: What material and hardness do you use?
A: We use 35MnB boron steel with induction quenching to HRC 45-52 surface hardness while maintaining a tough core.
Q: Do you provide a warranty?
A: Yes, we provide 12 months or 2,000 operating hours against manufacturing defects under normal operating conditions.
Q: Can you match my OEM part number?
A: Yes. Provide the Sumitomo part number or drawing, and we will produce direct replacement guards with identical mounting dimensions and hole patterns.
Q: Do you offer samples before bulk production?
A: Yes, sample orders are available to verify fit and finish before full production runs.
Q: Are these track guards suitable for extreme mining conditions?
A: Yes, the deep-hardened 35MnB design is specifically intended for high-impact, abrasive mining and quarrying environments.
Q: How should track guards be installed?
A: Align bolt holes, torque to OEM specifications, and inspect mounting bolts every 250 service hours.
Maintenance Guide
- Before installation, clean the track frame mounting surface and verify bolt-hole alignment using the Sumitomo OEM drawing or the removed original guard.
- Install brackets and bolts by hand first to prevent cross-threading, then torque evenly to the OEM-specified value; re-check torque after 50 hours.
- Inspect guards every 250 service hours for cracks, loose or elongated bolts, and material loss; replace damaged fasteners immediately.
- Replace track guards when wear exceeds 30% of original thickness to maintain adequate undercarriage protection and impact resistance.