7.5x7.5x7.5mm NdFeB Cube Magnets

This 7.5mm neo cube magnet can be used to show magnetic braking-makes an unusual demo. of Lenz Law-Eddy Currents. Click on Details below to see the video.

Click on Specifications below for gauss & pull force at 5 heights above the magnet; the highest readings are always at zero distance with lowest values at 10 & 100mm above.



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SKU: 44225-7.5
Cube magnet, 7.5mm, Neodymium/ N42 Full Sintered/Pressed

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Watch the video of Magnetic Braking-Lenz's Law/Eddy currents. Note that in the video we actually used a 12.5mm cube in a 3/4" copper pipe but those are harder to find. 

 

 

Titanium tweezers can be used to handle cube  magnets & position them easily. The Mark I Magnaprobe is ultra sensitive & can be used to check stray magnetic fields. The Mark II Magnaprobe is a fast & convenient way to confirm magnet are positioned with their poles pointing correctly.



 Click You can open or download a copy of the Hysteresis Graph or ROHS certification that applies to all our N42 grade magnets.

Field Strength (Gauss) & Pull Force in Pounds & Kilograms at 5 Distances Above Magnet
SKU: 44225-7.5;       Size: 7.5x7.5x7.5mm
Distance (mm): 0 0.1 1 10 100
Gauss 5666.8 5528.5 4306.5 329.7 0.8
Pounds 8.5 8.1 4.9 0.0 0.0
Kilograms 3.9 40.9 24.8 0.1 0.0
  • N42 grade: ~13,200 gauss (1.3T)
  • magnetized through the thickness
  • nickel-copper-nickel coated
  • size tolerance for dimensions <10mm: +/- 0.05mm
  • size tolerance for dimensions >10mm: +/- 0.1mm
  • magnet strength variance piece to piece: <2%
  • 80C maximum operating temperature