Partly cloudy
5 °C
Germantown, Maryland
Partly cloudy

Wed Nov 14 2018
none

MATCHING THE MAGNET TO THE LOAD – A CAUTIONARY TALE

26-06-2018
by 
in 

“But the magnet is rated for one tonne,” began the foreman, “and that plate is only 900 kilos.”

Patiently the magnet salesman tried to explain, “yes, but not all ‘one tonnes’ are the same.”

“How can one tonne not be one tonne?” The foreman was becoming exasperated.

“I didn’t say a tonne isn’t a tonne; I said not all one tonnes are the same!”

“Please explain!”

“OK: let me explain with an exaggeration. Suppose you have one tonne of steel in the form of a sheet 14 metres long by 3 metres wide and 3 millimetres thick. Do you suppose your one tonne magnet would lift it?” asked the intrepid salesman.

“Well…no; wouldn’t it droop too much and peel off the magnet?”

“Ah” sighed Magnet-Man, “now you’re onto something. You see, it is one tonne - but it’s not a safe one tonne!”

Back in the real world, Australian Standard AS4991-2004 Lifting Devices requires that “the range of shapes and mass of the load shall be taken into account when selecting a magnet…”

Lifting magnet load ratings are valid only for the manufacturer’s specified steel thickness, profile (round, square etc), type of steel and load overhang or sag.

Don’t take unnecessary risks with your lifting magnets. Check the specs and check the load.

Serpent & Dove’s MaxX permanent magnetic lifters come with a detailed operating manual and also use patented ‘neutral crown’ technology, which concentrates magnetic field at the lifting surface.

Serpent & Dove - Applied Magnetics
02 99717577
www.serpent-dove.com

 

Related news & editorials

  1. 14.11.2018
    14.11.2018
    by      In
    Manufacturers and warehousing operations that operate outdated, power-hungry and unreliable conveyor systems can now upgrade to the latest reliable and energy-efficient technologies.
    Adept Conveyor Technologies can easily retro-fit the latest intelligent “green” conveyor technology to an existing... Read More
  2. 08.11.2018
    08.11.2018
    by      In
    Dematic has developed a freezer-rated narrow-aisle reach AGV that can operate autonomously in chilled and freezer environments. The AGV can operate permanently in temperatures down to -25°C and intermittently as low as -30°C.
    The vehicle’s specifications are ideally suited to current-day... Read More
  3. 07.11.2018
    07.11.2018
    by      In
    MRT Australia offers a comprehensive range of precision-engineered conveyor components suitable for a broad spectrum of industry applications.
    The high-quality German-made product range is ideally suited to specialist machine builders and conveyor manufacturers. And it also offers a reliable source... Read More
  4. 05.11.2018
    05.11.2018
    by      In
    Adept Conveyor Technologies prides itself that every conveyor system it supplies is designed and built to answer the customer’s exact application requirements.
    The company has a complete in-house capability covering the whole conveyor system lifecycle from conceptualisation and design through to... Read More