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Electro Overband Magnets

The Bunting overband separators are renowned around the world as the most effective units for the continuous removal of tramp ferrous material from a product stream.


Electro Overband Magnets

The Bunting overband separators are renowned around the world as the most effective units for the continuous removal of tramp ferrous material from a product stream.

The Heavy-Duty electro overband is the most powerful overband separator from the Bunting range. The range is one of the widest in the world, with the largest model weighing 35 tonnes and spanning across a 2 metre wide conveyor.

Due to its high magnetic strength, the electro overband is able to work at an increased operating gap, enabling it to extract ferrous from deep troughed conveyors.

Electro magnetic overbands are commonly used for installation in plants within the quarrying and recycling industries where they would be positioned either inline over the head pulley or across a conveyor belt.

Bunting supply Heavy-Duty overband magnets to operate over 150mm – 2000mm conveyor belts and additional support structures can also be supplied if required.

There are two different types of heavy-duty electro overbands;

  • Oil cooled – This type of heavy-duty overband is the most commonly used of the two types. It efficiently maintains an optimum working temperature and is also capable of producing a higher magnetic force than the equivalent air cooled electro overband magnet.
  • Air cooled – This type of magnet is used where oil is not a customers preference for health and safety reasons. For example, a client may wish to use this type of cooling because it is less of a fire hazard.

To give the overband magnet a longer belt life (especially when handling abrasive materials) an armoured belt can be fitted as an optional extra.

Heat resistant belting can also be supplied to allow the heavy-duty overband to operate at higher ambient temperatures.

The ElectroMax

Bunting are proud to announce their latest innovation in separation technology with the launch of the ‘ElectroMax’ a low profile, air cooled electromagnet magnetic conveyor pulleys

The range of machines are designed to meet the ever-increasing demand for high powered electro magnets, that are both lightweight and compact, a requirement which has been predominantly driven by the mobile crusher market.

The ElectroMax is based on a similar frame design as the permanent magnet range, utilising only two pulleys, instead of 4. The new units are also air cooled, eliminating the need for any oil or conservator tanks.

The high gradient magnetic field emitted from the electromagnet enables the recovery of smaller iron contaminants, which may have otherwise been missed by a permanent magnet. The additional strength also improves the magnets capability of lifting heavier tramp metals.

The benefits of the ElectroMax are;


1) Electro Magnet can be switched off.

2) Higher magnetic gradient than permanent.

3) Air cooled coil rather than oil cooled so no issue with oil.

4) Low profile so takes up no more space than equivalent permanent magnet and eliminating the need to have four pulleys.

5) Lightweight so can be used for mobile machinery installations

6) Range of models covering four conveyor belt widths for the magnetic conveyor pulleys




Overband Magnets

Typical applications for the Bunting range of Overbands are;

  • Installation on Mobile Crushers, Screens and Shredders
  • Installation within a MRF (Material Recovery Facility) plant
  • Separation of ferrous contamination in quarries
  • Removal of ferrous materials in mining operations
  • Used in Wood Waste processing applications
  • Separation of ferrous in fragmentiser metal recovery
  • Separation of ferrous metals from Municipal Solid Waste
  • Removal of ferrous contamination in glass cullet recycling
  • Separation of ferrous from Kerbside collection recycling
  • Separation of ferrous metals in Skip Waste recycling
  • Removal of ferrous from Foundry applications