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Square Nd Magnets
Field Strengths & Holding Force

The square magnets are N42 ~13,000 gauss (1.3T-N42 grade) which is a theoretical maximum value. 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 holding forces are also theoretical maximums, dependent on the permeability, thickness and area of the metal used. The attractive/repulsive force of 2 identical magnets is double this value.

  • nickel coated
  • size tolerance is +/- 0.1mm
  • 80C maximum operating temperature

Field Strengths (in gauss) at 5 Distances (in mm); Holding Force in 3 Units
Size00.1110100lbFgmsN
2.5x2.5x13.84E+033.61E+031.56E+031.11E+011.00E-020.41772
5x5x12.23E+032.19E+031.61E+034.09E+015.00E-020.83553
5x5x2.54.40E+034.26E+032.92E+038.57E+011.30E-012.08879
10x10x2.52.70E+032.67E+032.34E+032.65E+025.00E-013.9177517
10x10x54.40E+034.33E+033.66E+034.25E+029.70E-017.8354935
12.5x12.5x2.52.23E+032.22E+032.02E+033.50E+027.80E-014.9221822
12.5x12.5x53.84E+033.80E+033.36E+035.73E+021.51E+009.8443644
25x25x2.51.17E+031.17E+031.14E+035.55E+023.07E+009.8444144
25x25x52.23E+032.22E+032.14E+039.81E+025.93E+0019.6888287

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Waterloo, ON, N2J 4R9
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Niagara Falls, NY 14305
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Phone: (519) 746-4761   Fax: (519) 747-5636
Or ORDER toll-free at: 1 (877) 746-4764
Waterloo Region Customers: order on-line & then call to arrange pickup; we do not have a walk-in store; we will deduct the freight.

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