Top Description
The Caterpillar track link assembly is a complete track chain of links, pins, and bushings that transfers drive power and supports machine weight.
We operate a factory direct line, offering full OEM manufacturing for Caterpillar models with custom lengths and pin configurations for global buyers.
This assembly prevents costly downtime by eliminating pitch extension, pin walking, and premature link breakage under high impact and heavy loads.
With over 20 years in undercarriage production, our ISO9001 and SGS certified processes guarantee consistent, millimeter-precise quality.
Links are forged from 35MnB steel and deep quenched to HRC 50–56; pins are induction hardened for maximum wear life.
Core Selling Points
- Premium 35MnB Material: High-grade 35MnB steel provides exceptional tensile strength and impact toughness, resisting crack propagation under severe shock loads.
- Deep Quenching/Heat Treatment: Surface hardness reaches HRC 50–56 while retaining a ductile core, dramatically reducing link wear and sprocket abrasion.
- Precision Forging: Closed-die hot forging maintains strict pitch tolerance of ±0.1mm, ensuring smooth sprocket engagement and reduced vibration noise.
- 100% QC Inspection: Every assembly passes magnetic particle flaw detection, dimensional pitch check, and hardness verification before shipment.
Product Grid Intro
Our catalog of Caterpillar Track Link Assembly includes various specifications, fully compatible with Caterpillar excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | Links: 35MnB; Pins: 40Mn2; Bushings: 20CrMnTi |
| Hardness (HRC) | Link surface: 50–56; Pin surface: 58–62; Bushing inner/outer: 56–60 |
| Process | Hot forging, deep quenching, induction hardening, precision machining |
| Certification | ISO9001, SGS material & mechanical test reports |
| Warranty | 12 months or 2,000 working hours against manufacturing defects |
2. OEM & Customization
We match customer drawings or samples exactly, producing custom pitch lengths and pin diameters while strictly adhering to OEM dimensional and metallurgical standards.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Excavator | Caterpillar | 320C/D, 325D, 330D, 336D, 349D/E, 374F |
| Bulldozer | Caterpillar | D6R/T, D8R/T, D9R/T, D10T, D11T |
4. Delivery & Logistics
Factory-direct pricing with reliable sea freight to major US ports. Flexible MOQ from 20 assemblies per model; typical lead time is 25–30 days.
Technical Features
Our sealed and lubricated track (SALT) option features polyurethane seals and a lifetime oil reservoir, reducing internal pin-to-bushing wear by up to 80% compared to dry chains.
Induction-hardened pins and carburized bushings create a high-hardness case with a tough core, preventing brittle fracture while resisting abrasive wear on contact surfaces.
Precision-machined link bores and matched bushing press fits eliminate micro-movements, preserving track pitch and protecting the sprocket from accelerated wear.
Applications
- Heavy mining and aggregate handling
- Large-scale road construction and earthmoving
- Quarrying and rock excavation
- Forestry and land clearing operations
- Demolition and scrap recycling
Frequently Asked Questions
- What is the minimum order quantity (MOQ)?
- Standard MOQ is 20 track link assemblies per part number. Trial orders with mixed models can be discussed.
- What is the typical delivery time?
- Normal production lead time is 25–30 days after order confirmation. Urgent shipments can be arranged with partial air freight.
- How deep is the heat treatment on the link surface?
- Effective case depth is 4–6 mm, ensuring long-term abrasion resistance even after visible surface polishing.
- What warranty do you provide?
- A 12-month or 2,000-working-hour warranty covers material and manufacturing defects. Wear from improper tension or lack of lubrication is excluded.
- Can you match specific Caterpillar part numbers?
- Yes. Provide the OEM part number (e.g., 6Y-2808, 107-4054) and we will cross-reference to the exact assembly dimensions and pin size.
- Do you offer lubricated (SALT) track chain options?
- Yes. We manufacture both dry and sealed-and-lubricated track assemblies; SALT chains are recommended for high-hour applications to extend service intervals.
- Are your track links interchangeable with original undercarriage components?
- Absolutely. Links, pins, and bushings are manufactured to OEM pitch and bore tolerances, ensuring full interchangeability with genuine Cat components.
Maintenance Guide
- Check track sag regularly; over-tension causes pitch stretch and sprocket damage.
- Inspect bushing OD wear and pin protrusion every 500 hours; uneven wear signals misalignment.
- Replace entire track chain assembly when link rail height reaches wear limit to avoid track shoe bolt loosening.
- Never weld directly on the link body; use OEM-grade locking bolts and torque to specification.
- Keep undercarriage clean of packed material to prevent abrasive grinding of link joints.