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Organic Chemistry Molecular Model Sets, Permanent Neodymium Rare Earth Magnets, Magnifying Glasses, Test Strips, Lab Supplies, Tuning Forks

Neodymium Cylinder Magnets

These neodymium cylinder magnets are N42 grade, ~13,000 gauss (1.3T). Field strengths have been calculated using finite element analysis at the surface and 4 places above the central point and are estimated to be within 10% of actual. For surface measurements, these values are more accurate than a magnetometer since such devices have an airgap of at least 0.1mm between the magnet and sensor. The 0mm measurement is a maximum theoretical value that assumes there is no nickel coating.

The holding forces are also theoretical maximums based on optimum permeability, thickness, area of the metal attached to and no nickel or other coating. The attractive/repulsive force of 2 identical magnets, in direct contact, is double this value.
  • N42 grade; ~13,000 Gauss: 1.3Tesla
  • nickel-copper-nickel coated
  • size tolerance for dimensions <10mm: +/- 0.05mm
  • size tolerance for dimensions >10mm: +/- 0.1mm
  • magnet strength variance piece to piece: <8%
  • 80C maximum operating temperature
  • axis of magnetization is perpendicular to page
See also:

Click to see

American & Canadian Coin Sizes: Smallest to Largest
Dime: ~18x1.2mm; Penny: ~19x1.45mm; Nickel: ~21x1.75mm; Quarter: ~24x1.6mm.
neodymium rod magnets
P/NDescription QtyUnit
44200-2.5Rod magnet, D2.5 x 2.5mm, Nd rare earth, N421-90.12
 10-990.11
 100-9990.10
 1000+0.09
44200-5Rod magnet, D2.5 x 5mm, Nd rare earth, N421-90.18
 10-990.17
 100-9990.16
 1000+0.15
44200-7.5Rod magnet, D2.5 x 7.5mm, Nd rare earth, N421-90.25
 10-990.24
 100-9990.23
 1000+0.22
44200-10Rod magnet, D2.5 x 10mm, Nd rare earth, N421-90.30
 10-990.29
 100-9990.28
 1000+0.27
44200-12.5Rod magnet, D2.5 x 12.5mm, Nd rare earth, N421-90.40
 10-990.39
 100-9990.38
 1000+0.37
44201-5Rod magnet, D5 x 5mm, Nd rare earth, N421-90.45
 10-990.42
 100-9990.40
 1000+0.38
44201-7.5Rod magnet, D5 x 7.5mm, Nd rare earth, N421-90.65
 10-990.62
 100-9990.60
 1000+0.58
44201-10Rod magnet, D5 x 10mm, Nd rare earth, N421-90.90
 10-990.87
 100-9990.85
 1000+0.83
44201-12.5Rod magnet, D5 x 12.5mm, Nd rare earth, N421-91.00
 10-990.97
 100-9990.95
 1000+0.93
44201-15Rod magnet, D5 x 15mm, Nd rare earth, N421-91.15
 10-991.11
 100-9991.07
 1000+1.03
44202-7.5Rod magnet, D7.5 x 7.5mm, Nd rare earth, N421-91.50
 10-991.46
 100-9991.42
 1000+1.38
44202-10Rod magnet, D7.5 x 10mm, Nd rare earth, N421-91.65
 10-991.61
 100-9991.57
 1000+1.53
44202-12.5Rod magnet, D7.5 x 12.5mm, Nd rare earth, N421-92.00
 10-991.90
 100-9991.85
 1000+1.80
44202-15Rod magnet, D7.5 x 15mm, Nd rare earth, N421-92.45
 10-992.35
 100-9992.30
 1000+2.25
44202-25Rod magnet, D7.5 x 25mm, Nd rare earth, N421-94.30
 10-994.20
 100+4.10
44203-10Rod magnet, D10 x 10mm, Nd rare earth, N421-91.75
 10-991.65
 100-9991.60
 1000+1.55
44203-12.5Rod magnet, D10 x 12.5mm, Nd rare earth, N421-92.25
 10-992.15
 100-9992.10
 1000+2.05
44203-15Rod magnet, D10 x 15mm, Nd rare earth, N421-92.60
 10-992.50
 100+2.45
44203-25Rod magnet, D10 x 25mm, Nd rare earth, N421-95.25
 10-995.10
 100+5.00
44204-12.5Rod magnet, D12.5 x 12.5mm, Nd rare earth, N421-93.50
 10-993.40
 100+3.35
44204-25Rod magnet, D12.5 x 25mm, Nd rare earth, N421-97.85
 10-997.70
 100+7.60
44205-25Rod magnet, D15 x 25mm, Nd rare earth, N421-99.95
 10-999.80
 100+9.70
44207-20Rod magnet, D20 x 20mm, Nd rare earth, N421-916.95
 10-9916.75
 100+16.65

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