When it comes to heavy-duty excavation, the integrity of your undercarriage determines the productivity of your machine. From harsh mining conditions to intense construction cycles, reliable performance starts where the machine meets the ground. That’s why contractors and OEMs worldwide trust Juli Machinery for high-quality Caterpillar excavator undercarriage parts engineered to meet the toughest operating demands.
As a leading manufacturer and supplier of aftermarket components, Juli Machinery is setting a new benchmark in the global market with superior materials, advanced heat treatment, and precise compatibility with Caterpillar models.

Why Undercarriage Quality Matters
Undercarriage systems are responsible for 50% of the lifetime maintenance costs of tracked equipment. Even minor failures can halt an entire operation. Key components such as track links, rollers, idlers, and sprockets must be able to:
- Withstand constant ground impact and friction
- Maintain dimensional accuracy under heat and pressure
- Resist corrosion, deformation, and fatigue over thousands of hours
- Provide compatibility with OEM configurations and tolerances
Caterpillar excavator undercarriage parts from Juli Machinery are designed with these demands in mind, delivering exceptional durability and cost-efficiency in real-world applications.
Precision Track Links from a Trusted China Source
As an experienced player among china track link producers, Juli Machinery offers a wide selection of forged and machined track link assemblies. Our track chains are:
- Produced from high-manganese steel or boron steel for extreme wear resistance
- Heat-treated and induction hardened to enhance tensile strength
- Compatible with a full range of Caterpillar models, from mini to large excavators
- Available in lubricated or dry pin configurations
Each track link is inspected for pitch tolerance, press-fit, and bushing hardness to ensure consistent field performance, even in rocky, abrasive, or underwater environments.
Track Rollers Engineered to Perform
As one of the trusted track roller factories in China, Juli Machinery delivers single and double flange track rollers that operate under extreme load conditions. Our rollers are:
- Designed with deep-hardened surfaces for longer rolling life
- Fitted with high-precision seals to resist oil leakage and contamination
- CNC-machined to guarantee concentricity and consistent load distribution
- Customizable with various flange profiles, bushing materials, and surface finishes
We manufacture rollers compatible not just with Caterpillar excavators but also with other major OEM brands, offering cost-effective, ready-to-install solutions for both aftermarket and production lines.
Full Undercarriage Solutions Beyond Track Links and Rollers
Juli Machinery’s product portfolio for Caterpillar excavator undercarriage parts includes:
- Carrier rollers with low-friction bearings for smoother chain guidance
- Idler groups built to absorb shock and preserve track tension
- Sprockets and segments optimized for clean engagement and minimal wear
- Track shoe plates with custom grousers for various terrain conditions
Whether you’re sourcing parts for scheduled maintenance, emergency replacement, or OEM integration, Juli offers scalable supply and consistent quality backed by ISO-certified manufacturing.
Why Juli Machinery?
With over 15 years of manufacturing experience, Juli Machinery is a name that stands for:
- Stable global supply chains and fast delivery across continents
- Stringent material testing and full traceability from raw steel to final part
- OEM/ODM services for branded or custom-developed components
- After-sales support with engineering consultation and warranty guarantees
Partnering with some of the top track roller factories and steel treatment labs, we ensure every component leaving our facility meets or exceeds international standards.
Build Stronger with Juli Undercarriage Systems
Whether you’re managing a construction fleet, servicing earthmoving contracts, or sourcing dependable aftermarket parts, the undercarriage should never be your weak point. With Juli Machinery, you gain a partner that understands the stakes—delivering Caterpillar excavator undercarriage parts, china track link assemblies, and track rollers that power through pressure, load, and time.