Hitachi Excavator Heavy Duty Undercarriage Spare Parts EX35 Heat-
treatment Track Bottom Roller
1. What is a roller?
The roller is a vital component of belt conveyors—it comes in diverse types and large quantities, and its core function is to support both the conveyor belt and the weight of transported
materials. Critically, rollers account for 35% of a belt conveyor’s total cost while generating over 70% of the system’s operational resistance—making the roller’s quality particularly critical to overall performance and efficiency.
Track rollers use materials including 40Mn2, 40MnB, and 50Mn, selected based on specific working conditions. Each roller first
undergoes precision forging and normalization, followed by overall heat treatment—this process achieves a surface hardness of HRC52-60 and a hardened layer depth of over 7-10mm (HRC45), ensuring superior durability along with high impact resistance and strong surface wear resistance on the rollers’ contact surfaces.
Equipped with high-quality floating seals and a reliable lubricating system, these rollers adapt seamlessly to diverse climates and
temperatures. Both track and carrier rollers perform stably under severe working conditions or extreme climates
ranging from -45℃ to 120℃, while keeping the components maintenance-free.
2. Track Rollers Excavator Advantages / Features
By leveraging quench-tempering processes, we ensure our components deliver excellent mechanical properties, including high strength and superior resistance to bending, breakage, and wear—critical for withstanding rigorous industrial use.
With a surface hardness of HRC40-55, our products reduce wear and extend service life significantly. This not only adds value to your products but also supports your business growth by maximizing the durability of your equipment.
Featuring precise design and careful manufacturing, our components enable secure installation and easy grousing, while handling heavy loads of up to 50 tons without compromising the excavator’s reliable operation. Backed by
reliable quality, high cost-performance, and premium services, our products stand as your best choice.
3. Production Processes
4. Track Roller Structure
5. Design/Structure/Main Dimensions of Installation
6. Our Advantages
* World-class quality
* Factory sale directly with reasonable price
* 35 years' experience in Excavator & Bulldozer spare parts
manufacturing
* Flexible payment terms including T/T, L/C and so on
* Fast delivery within 30 days after contract established
* Professional sales team,quality inspection and report, maritime
logistics guidance
* After-sale services:video technical support,24h online support
7. Hot Sale Products
