The aggregate, mining, and minerals industry depends heavily on permanent crossbelt (overband) magnets to protect critical equipment like crushers, screens, and conveyors from damage caused by tramp ferrous metals. However, no single magnet fits all applications. Different designs of crossbelt magnets are available, each suited for specific operational needs. Understanding your installation requirements is essential in selecting the right magnet. Bunting offers a wide range of crossbelt magnets designed for various applications, helping customers solve their unique challenges efficiently.

The Crossbelt Magnet: A Workhorse of Efficiency

In the early 1980s, Bunting introduced the first permanent crossbelt magnets, revolutionizing industrial metal separation. Since then, thousands of these advanced systems have been deployed globally. While the basic principle remains the same, continuous improvements in magnetic materials and manufacturing techniques have significantly boosted the efficiency of ferrous metal removal.

These magnets are essential tools that effectively lift and remove unwanted ferrous contaminants from mined or quarried materials. Designed with a permanent magnet block inside a strong frame, they include two or four pulleys and a self-cleaning rubber belt. As materials pass beneath the magnet, it attracts and removes harmful tramp metals, ensuring smoother operation and longer equipment life.

The choice between permanent and electro-magnetic systems depends on factors such as conveyor width, material depth, and the type of tramp ferrous metals present. Each option has its advantages, and the right selection can optimize performance and reduce maintenance costs.

Crossbelt Models and Applications

Bunting’s OCW Heavy Duty Oil Cooled Electro Crossbelt Magnetic Separator is built for high-performance ferrous extraction. It delivers powerful magnetic fields, allowing operation at wider gaps and handling heavier loads—ideal for deep troughed conveyors in recycling and mining operations. Available in multiple sizes, the OCW can be installed inline over head pulleys or span conveyor belts ranging from 36” to 84” in width.

The ACW Heavy Duty Air Cooled Crossbelt Magnetic Separator offers a reliable and low-maintenance solution. With an air-cooling system, it reduces the need for frequent servicing while maintaining strong magnetic performance. Its powerful electromagnetic field captures fine ferrous particles, improving product purity and reducing contamination risks.

Bunting’s Heavy-Duty Electro Crossbelt Magnetic Separators represent the top tier of our offerings. These separators provide exceptional magnetic strength and versatility, making them ideal for deep troughed conveyor systems. They come in a wide range of sizes and can be positioned across conveyor belts or inline over head pulleys, suitable for belt widths from 24” to 78½”. Their robust design ensures long-term reliability and efficient metal removal.

How to Choose the Right Crossbelt Magnet

Selecting the appropriate crossbelt magnet—whether permanent or electro—depends on the specific application. Bunting’s team of application engineers evaluates several key factors, including the purpose of metal separation (such as protecting plant equipment), the characteristics of tramp metals (like size and shape), and the properties of the material being conveyed (including particle size and load depth). This detailed assessment helps determine the best magnet for each scenario.

With decades of experience and a focus on customized solutions, Bunting continues to lead the way in magnetic separation technology. Our products are designed to meet the evolving demands of the mining and aggregate industries, delivering consistent performance and long-term value.

Whether you're looking to improve safety, reduce downtime, or enhance product quality, Bunting has the expertise and solutions to support your needs. Contact us today to discuss your application or request a tailored quote.