In the world of heavy machinery, undercarriage parts play a key role in performance and durability. Among these parts, track rollers and roller carrier are essential for excavators and diggers. Understanding their functions and differences helps you choose the right components for your machines.

What Are Track Rollers?
Track rollers, also known as bottom rollers, support the weight of the excavator or digger. They are mounted along the bottom of the undercarriage and roll on the track chain to move the machine forward or backward.
Track rollers:
- Carry the entire weight of the machine
- Maintain track tension and alignment
- Operate under heavy loads and harsh environments
- Must be strong, wear-resistant, and durable
At JULI, we manufacture high-quality track rollers using forging and casting technology. Our rollers are made from alloy steel, offering excellent strength and a 2-year warranty. We provide standard sizes and OEM options to fit various brands and models.
What Is the Difference Between a Track Roller and a Carrier Roller?
While both rollers are part of the undercarriage system, their functions and positions differ:
| Feature | Track Roller | Carrier Roller |
|---|---|---|
| Location | Bottom of the undercarriage | Top of the undercarriage |
| Function | Supports entire machine weight | Supports and guides the top of the track |
| Load Bearing | High load-bearing | Lower load-bearing |
| Wear Resistance | Extremely high due to ground contact | Lower as not in direct ground contact |
Carrier rollers, also known as top rollers or roller carriers, support the track chain from above. They help the track maintain shape and reduce sagging. Although they experience less wear, they are still critical for smooth operation and long-term performance.
At JULI, our carrier rollers are made from 50Mn carbon steel. They are designed for durability, with a normal life of 4,000 hours and a 1-year warranty. Just like our track rollers, they are available in standard sizes, various colors, and customer logos.
How to Choose the Right Rollers?
When selecting rollers, focus on the following key factors:
1. Material Quality
- Choose rollers made from high-grade alloy or carbon steel
- Ensure they use forging and casting technology for strength and durability
2. Warranty and Lifespan
- Look for products with a reliable warranty
- JULI offers 2-year warranty on track rollers and 1-year on carrier rollers
3. OEM Compatibility
- Select products that match your machinery model
- JULI provides OEM services and can customize sizes, colors, and logos
4. Supplier Reputation
- Work with experienced manufacturers known for quality and service
- JULI has long-term partnerships with global customers, including major brands like XCMG
Why Choose JULI as Your Track Roller Manufacturer?
As a leading Chinese manufacturer, JULI delivers top-tier undercarriage parts. Our products meet global standards and cater to brands like XCMG.
JULI’s Product Advantages:
- High-Quality Materials: We use alloy steel and 50Mn carbon steel.
- Advanced Technology: Our rollers undergo forging and casting for maximum durability.
- Custom Solutions: We provide OEM services with customizable sizes, colors, and logos.
- Global Reach: We export to Russia, Australia, the Middle East, and more.
Our Track Rollers and Carrier Rollers Are Perfect for:
- Excavators (track rollers excavator)
- Bulldozers (digger track rollers)
- Other heavy machinery
Partner with JULI for Quality and Service
Choosing the right track roller or carrier roller can greatly impact your machine’s efficiency and longevity. At JULI, we offer top-tier undercarriage parts, manufactured to meet the highest standards. With our rich experience, global partnerships, solid reputation, and excellent customer service, we are ready to support your business.
We invite you to explore our full range of products including track rollers, carrier rollers, sprockets, track links, buckets, rippers, and chisels. Contact us today for a quote, sample, or to discuss your specific needs.
Let JULI be your trusted partner in construction machinery parts. We offer reasonable prices, high-quality products, and a commitment to your success.