good product
used in a oil sump plug to collect worn iron particles. Very strong magnets
Product code: 21039
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This neodymium cylinder magnet has a diameter of 6mm and a height of 25mm. It has a magnetic flux reading of 6255 Gauss and a pull force against 3mm mild steel of 1.5kg. It is identified as part number 21039.
The more Neodymium material between the North and South pole surfaces, the greater the magnetic force generated by the magnet. Available in N42 Grade Neodymium, these Neodymium Cylinders have deeply penetrative but narrow fields and can be matched to suit a particular circumstance with particular strength requirements. Unlike Discs, these tall, cylinder-shaped magnets are easy to dislodge because of their small pole surface area and elongated height dimension. Their cylindrical shape also produces a field that is deep and can penetrate through other surfaces to detect metallic objects or magnetic fields that are otherwise invisible to the eye. Small cylinders like this are found in detection devices and security systems that rely on their compact size and their ability to produce a far-reaching, permanent magnetic field. Slim magnets like these cylinders make good markers or position indicators on whiteboards, maps or site-plans in the office or any educational environment.
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The Pull Force listed for each magnet is based on lifting 10mm thick steel from a horizontal surface. Magnets on a vertical surface (of 10mm thick steel) are generally able to hold around only 30% of the pull force listed in the product description. This is due to the effects of gravity and the lack of friction between the surface and the shiny magnet. Read More