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Our company is a specialist in field of magnetic separation

We develop, produce and apply devices for magnetic separation. Our magnetic separators are designed and manufactured exactly in a made-to-measure way as per your needs.

Today

How to choose an overband magnet: three numbers decide

Overband magnet quotations are compared on gauss measured at the core surface. What actually decides performance is the field at the real suspension height, above the burden. Three numbers will tell you whether the separator will protect your plant.

Suspension height: the number that changes everything else

The magnetic field drops away very quickly with distance. A value measured at the core surface therefore says almost nothing about performance. What matters is the field at the height where the magnet actually hangs above the belt.

For the self-cleaning overband magnet DND-AC the installation height is stated for every model range. The ferrite range Mx F BEAST works up to 500 mm above the belt and covers belt widths to 2,000 mm. Rare earth ranges hang lower but capture smaller pieces.

Burden depth: what sits at the bottom of the belt

A piece of tramp iron at the bottom of the burden is much further from the magnet than one on top. The deeper the burden, the more reach you need — and the sooner an undersized unit shows up as a broken shredder knife.

Opening up the flow helps too. An in-line installation over a transfer point lifts capture without adding magnet power.

Smallest particle captured: ferrite or rare earth

Ferrite ranges capture pieces from roughly 1 to 1.5 mm, the rare earth ranges JACKAL, HYENA and WOLF from 0.5 mm. Nails from shredded pallets therefore belong with rare earth, a deep RDF burden with ferrite.

What to ask for before you order

Every DND-AC unit ships with a measurement report: a gausschart across 0–400 mm in 50 mm steps and a capture test on 13 reference pieces. We are the only overband magnet manufacturer publishing the measurement method. Add a 10-year warranty and a service response within 2 working days.

Not sure which solution fits your plant? We test your sample free and deliver the result within 3 working days. Contact us.

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