Dingtai manufactures excavator track link assemblies, the structural chain component connecting track shoes, pins, and bushings to deliver traction and undercarriage stability.
Dingtai provides factory-direct pricing and complete OEM manufacturing services, supplying replacement track link assemblies to distributors, dealers, and equipment owners worldwide.
Heat-treated track links resist elongation, cracking, and pin/bushing wear, reducing unplanned downtime and extending undercarriage service intervals in abrasive working conditions.
With over 20 years of engineering experience and ISO9001/SGS certified production, Dingtai delivers repeatable quality for demanding heavy machinery fleet operations.
Each assembly uses premium 35MnB steel and deep quenching to achieve high surface hardness while maintaining a strong, impact-resistant core.
Core Selling Points
- Global Brand Compatibility: Engineered to replace Caterpillar, Komatsu, Hitachi, Kobelco, Volvo, and Doosan undercarriage components with precise pitch and dimensional accuracy.
- Premium 35MnB Material: Forged from 35MnB alloy steel, track links provide high tensile strength and resistance to impact, bending, and abrasive wear.
- Deep Quenching/Heat Treatment: Induction hardening and deep quenching achieve uniform surface hardness of HRC 50–58, preventing premature elongation and bushing bore wear.
- 100% QC Inspection: Every assembly undergoes dimensional checks, magnetic particle testing, and hardness verification to ensure zero-defect delivery and full production traceability.
Our catalog of Excavator Track Link Assembly includes various specifications, fully compatible with Caterpillar, Komatsu, Hitachi, Kobelco, Volvo, and Doosan excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 40MnB forged alloy steel |
| Surface Hardness | HRC 50–58 |
| Core Hardness | HRC 30–40 |
| Pitch Range | 90–260 mm, customizable |
| Manufacturing Process | Hot forging, precision machining, induction hardening |
| Certification | ISO9001:2015, SGS |
| Warranty | 12 months / 2,000 working hours |
OEM & Customization
Provide drawings, part numbers, or samples; Dingtai matches pitch, link height, and hardness to OEM standards for exact replacement fit.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Excavators | Caterpillar, Komatsu, Hitachi, Kobelco, Volvo, Doosan | CAT 320/336, PC200/PC300, ZX200/ZX330, EC210/EC240 |
| Bulldozers | Caterpillar, Komatsu, Shantui | D6/D8, D65/D85, SD16/SD22 |
| Mini Excavators | Bobcat, Kubota, Yanmar | E35/E50, KX057, VIO55 |
Delivery & Logistics
We ship factory-direct worldwide with flexible MOQ, export-standard packaging, and reliable lead times, cutting landed cost for bulk undercarriage replacement programs.
Technical Features
Forged link bodies distribute tractive stress evenly across rail surfaces and strut sections, preventing bending fatigue and link cracking under high load.
Precision-machined pin and bushing bores maintain interference fits, preserving seal integrity and preventing internal abrasive ingress in sandy or muddy conditions.
Induction-hardened bushing contact zones and sealed/lubricated pin designs reduce friction, heat, and internal wear, significantly extending track chain service life.
Applications
- Mining: Heavy ore and overburden handling with extreme abrasion.
- Quarrying: Rock loading and haul road maintenance.
- Road Construction: Grading, trenching, and embankment compaction.
- Demolition: High-impact breaking and material sorting.
- Forestry: Steep terrain and low-ground-pressure operations.
Frequently Asked Questions
- What is the MOQ for track link assemblies?
- Standard MOQ is 2–4 sets per part number. Sample orders are available for first-time OEM evaluation.
- What is the delivery time?
- Production lead time is 20–30 days after drawing approval and deposit, depending on order quantity and heat treatment capacity.
- How deep is the heat treatment on link contact areas?
- Induction hardening depth is 4–8 mm, achieving HRC 50–58 surface hardness while retaining a tough core.
- Do you match OEM part numbers?
- Yes, provide the OEM part number, machine model, or drawing; we manufacture to equivalent pitch, dimensions, and hardness.
- What warranty is included?
- 12 months or 2,000 working hours, whichever occurs first, covering material and workmanship defects under normal use.
- Can you produce custom track link assemblies?
- Yes, we support custom pitch, link height, bushing diameter, and seal configurations for non-standard undercarriages.
- How do I confirm correct fitment?
- Send machine model, serial number, or measured pitch and bushing diameter; our engineers verify compatibility before production.
Maintenance Guide
- Measure pitch elongation monthly; replace track link assemblies when elongation exceeds 3 percent of original pitch to prevent sprocket and idler damage.
- Inspect link height, bushing wear, and rail surfaces for uneven contact; this indicates misalignment, worn rollers, or incorrect track tension.
- Maintain OEM-prescribed track tension; over-tensioning accelerates pin and bushing wear, while under-tensioning increases detracking risk.
- Use proper pressing tools during installation; apply even force to avoid seal damage and ensure correct pin engagement.