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Rare-earth magnetic filter removes more particles

An Eclipse Magnetics product story
Edited by the Engineeringtalk editorial team Jul 29, 2005

Micromag is the latest generation of magnetic filter and can be used in any fluid application where ferrous or paramagnetic contamination is present.

The Micromag filtration system promises huge advantages in fluid filtration claims Steve McAllorum, Eclipse's Technical Sales Manager.

Using 90 years of magnetic expertise, Eclipse has developed what is claimed to be the best magnetic filter on the market.

The Micromag will take its place among Eclipse's other already successful magnetic filtration portfolio and will join the Automag and Filtramag, which are currently being used in high fluid volume applications in the automotive and grinding industry.

Recirculating magnetic particles in any machine tool especially precision grinding applications have many negative affects.

Pump, slideway and hydraulic seals wear prematurely, oil and coolant life is massively reduced due to bacterial growth, which can be associated with foreign bodies such as metallic particles and in some cases stops the fluid from performing their critical tasks of cooling and lubricating at the cutting face.

Surface finish and component accuracy can also be affected along with the need to redress cutting wheels on an excessive basis, all resulting in higher operating costs and reduced profit.

Many state of the art machine tools are still being supplied with substandard "cheap fix" filtration systems, which sometimes are no better than expensive strainers.

Micromag is the latest generation of magnetic filter and can be used in any fluid application where ferrous or paramagnetic contamination is present.

The unit is especially effective with machine tool oils and coolants.

The unit comprises a hard wearing clear filter body, anodised aluminium lid and a high intensity magnetic core.

The magnetic core incorporates neodymium iron boron (or "rare earth") magnetic material that generates extremely high intensity magnetic fields.

It is these high magnetic forces that can attract even a submicron sized particle, ensuring that even the dirtiest of fluids are thoroughly treated prior to it being used.

Micromag is available in three housing sizes: 5 and 10in with 1in inlet/outlet ports and a 20in unit with 1.5in ports.

All units are supplied with port adapters to suit most pipe connection sizes.

Fluid enters the housing via the inlet port and is evenly distributed around the underside of the aluminium lid via slotted flow channels.

This allows the fluid to slow down and pass down the outside of the magnetic core where any magnetic particles are attracted by the high intensity magnetic field.

The, fluid then passed through four return slots at the bottom of the core and up through the central return tube and out of the outlet port.

The centrally positioned magnetic core uses a patent pending magnetic circuit geometry design.

Magnets are carefully arrayed around a central magnetic flux return shield ensuring that all of the magnets' performance is used, while still allowing for four fluid-flow-through channels.

This ensures that even when the core is fully saturated with contamination, fluid flow is never affected.

The 10in bodied Micromag's core can hold 2kg of contamination before the unit requires cleaning.

This allows for extended operating durations and minimises downtime resulting in uninterrupted machining.

Where contamination generation is high the 20in Micromag can be used, which is capable of holding 3.8kg.

Where loading is extreme and machine operation is critical Micromags can be installed in a duplex setup.

The clear filter housing gives the operator a visual indication when the unit requires cleaning.

Cleaning is very simple and is conducted using the supplied cleaning tool.

The units can be fully cleaned and back online within 1min, minimising downtime.

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