Volvo Construction Equipment - Excavator EC140 Undercarriage Spare
Parts of Precise Design Bottom Track Roller
1. What is a roller?
As key functional elements of belt conveyor systems, rollers play a decisive role in overall
operational efficiency.
✔ Functional Role: Rollers serve the critical role of dynamic support for both the conveyor belt and the payload, acting as
indispensable foundational components to sustain uninterrupted
conveying operations.
✔ Cost Significance: Representing 35% of a belt conveyor’s total installation cost (based on standard
operational parameters), roller procurement and maintenance
constitute a substantial portion of the equipment’s life-cycle cost framework.
✔ Energy Performance Impact: Roller assemblies generate over 70% of the system’s total operational frictional resistance, directly
influencing energy consumption levels and long-term operational
cost-effectiveness.
✔ Reliability Criticality: Parameters such as manufacturing precision, sealing integrity,
and material durability directly dictate failure rates (e.g.,
bearing malfunction, premature wear), positioning rollers as a core control parameter in system reliability engineering.
✔ Material Portfolio: The primary material choices remain steel (characterized by high-strength load-bearing capacity, accounting
for ~85% of applications) and engineered plastics (offering corrosion resistance and low-noise operation for
specialized environments). Material selection must be tailored to
conveyanced media properties and environmental conditions.
2. Track Rollers Excavator Advantages / Features
The materials available for Track roller and Carrier roller are 40Mn2,40MnB,50Mn, depending on working conditions. The rollers are normalized with precision forging before overall heat treatment to achieve surface hardness of HRC52-56 and the depth of hardened layer reaches more than 7-10mm (HRC45). This ensures higher durability with high impact resistance and surface wear
resistance on the contact surface of the rollers. High quality floating seals and lubricating system are used to adapt to different climate and temperature. The track
and carrier rollers are able to work under severe working
conditions or climate ranging from -45℃~120℃, keeping the components free from maintenance.
Track Roller is welded before precision machining in vertical CNC turning lathe and hence, there is no concentricity errors. The process gives unparalleled quality advantage over that of precision machining
before welding. Therefore, the operation of roller is guaranteed against
occurrence of rapid wearing problems, which significantly improves service life of the products.
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
* Flexible payment terms including T/T, L/C and so on
* Fast delivery within 30 days after contract established
* After-sale services: video technical support,24h online support
7. Hot Sale Products
