Classification and Application Scenarios of Idlers
2026-04-21
Classification by purpose:
Groove-type idlers: composed of three short idlers (with a typical groove angle of 35°), used to support the upper conveyor belt and suitable for conveying bulk materials such as coal and ore.
Parallel idlers: long-roller design that supports the empty return strand of the conveyor belt, commonly used in the return section.
Buffer idlers: Installed at the discharge point, these idlers employ elastic design features—such as spring plates and rubber rings—to mitigate material impact, thereby protecting the conveyor belt. They are particularly suitable for heavy-load applications in mining, power plants, and other similar environments.
Self-aligning idlers: Equipped with automatic misalignment correction devices—such as tapered rollers or friction-based self-aligning mechanisms—to prevent belt deviation and ensure stable operation.
Classification by material:
Steel idlers: high strength, suitable for heavy-load applications, but prone to corrosion.
Plastic/Nylon Idler Rollers: wear-resistant, self-lubricating, and antistatic; suitable for humid or corrosive environments (e.g., chemical and food industries).
Ceramic idlers: smooth surface, low coefficient of friction, and high-temperature resistance, making them suitable for high-temperature or high-abrasion applications.
Polymer-composite idlers: By leveraging the advantages of multiple materials—such as corrosion resistance, lightweight construction, and low noise—they are increasingly becoming the mainstream choice.
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