Phone: (519) 746-4761

Canadian Address:

169 Lexington Court, Unit I

Waterloo, ON, N2J 4R9

 

US Address:

Niagara Falls, NY 14305

Canadian/International ship from Waterloo; US orders from Buffalo, NY.

For a detailed quote including applicable taxes, proceed to checkout

Neodymium Disc & Rod Magnets

High tolerance neodymium rare earth disc & rod magnets, N42 grade

Get repeatability and affordability with volume pricing.

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Custom Magnet Assemblies

Indigo Instruments is partnered with a world class designer & manufacturer of magnets & magnet assemblies. For more information see: Custom Machined Magnet Assemblies & Magnetic Filters.

See the ;Technical Tab below for General Specifications. .

For detailed specifications on individual magnets, click on their respective images for gauss ratings & pull forces with different air gaps.

American/Canadian Coin Sizes: 1 in= 25 mm

Dime: ~18x1.2mm; Penny: ~19x1.45mm; Nickel: ~21x1.75mm; Quarter: ~24x1.6mm.

  • Can damage computer gear & credit cards.
  • Handle with care. Magnets can snap together and break skin or a finger or shatter on impact.
Specifications for Fully Sintered/Pressed Neodymium Magnets, N42 Grade
Remanent
Flux Density
(Br)
Coercivity
(bHc)
Intrinsic
Coercivity
(jHc)
Maximum
Energy Product
(BHMax)
Curie
Temperature
(Tc)
Working
Temperature (Tc)
Temperature
Coefficient
(αB)r
13,000G; 1300mT 12.0 Oe; 955 A/m 17.0 Oe; 1353 A/m 42 MGO; 334 kJ/m3 310oC 80oC -0.12%/Co

 

  • 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: ± 5%

This table lists the pull forces for all our disc magnets. It assumes complete saturation & no air gap. See individual magnets for values with different gaps.

Field Strength (Gauss) & Pull Forces in Pounds & Kilograms at Surface/Centre of Magnet
SKU Size (mm) Gauss Pounds Kilograms
43511 3 × 1 3661 0.24 0.11
43512 4 × 1.5 3960 0.57 0.26
44200-1 2.5 × 1 4123 0.18 0.08
44200-2.5 2.5 × 2.5 5903.2 0.4 0.18
44200-5 2.5 × 5 6402.9 0.51 0.23
44200-7.5 2.5 × 7.5 6510.2 0.56 0.25
44200-10 2.5 × 10 6549 0.58 0.26
44200-12.5 2.5 × 12.5 6567.2 0.6 0.27
44201-1 5 × 1 2451.2 0.49 0.22
44201-2.5 5 × 2.5 4666.9 1.29 0.59
44201-5 5 × 5 5903.2 2.04 0.93
44201-7.5 5 × 7.5 6261.3 2.2 1.0
44201-10 5 × 10 6402.9 2.26 1.03
44201-12.5 5 × 12.5 6471.8 2.36 1.07
44201-15 5 × 15 6510.2 2.41 1.1
44202-1 7.5 × 1 1700.6 0.87 0.4
44202-2.5 7.5 × 2.5 3661 2.2 1.0
44202-5 7.5 × 5 5280 4.11 1.87
44202-7.5 7.5 × 7.5 5903.2 4.82 2.19
44202-10 7.5 × 10 6179.8 5.22 2.37
44202-12.5 7.5 × 12.5 6321.7 5.52 2.51
44202-15 7.5 × 15 6402.9 5.62 2.55
44202-25 7.5 × 25 6527 5.92 2.69
44203-1 10 × 1 1294.4 1.25 0.57
44203-2.5 10 × 2.5 2951.6 3.24 1.47
44203-5 10 × 5 4666.9 6.48 2.95
44203-7.5 10 × 7.5 5491.5 7.94 3.61
44203-10 10 × 10 5903.2 8.87 4.03
44203-12.5 10 × 12.5 6127.9 9.37 4.26
44203-15 10 × 15 6261.3 9.54 4.34
44203-25 10 × 25 6471.8 10.19 4.63
44204-1 12.5 × 1 1042.7 1.63 0.74
44204-2.5 12.5 × 2.5 2451.2 4.41 2.0
44204-5 12.5 × 5 4123 9.18 4.17
44204-7.5 12.5 × 7.5 5070.3 11.52 5.24
44204-10 12.5 × 10 5596.8 13.25 6.02
44204-25 12.5 × 25 6402.9 16.06 7.3
44205-1 15 × 1 872.3 2.01 0.91
44205-2.5 15 × 2.5 2087.1 5.59 2.54
44205-5 15 × 5 3661 12.1 5.5
44205-7.5 15 × 7.5 4666.9 15.44 7.02
44205-10 15 × 10 5280 18.21 8.28
44205-12.5 15 × 12.5 5659.5 20.24 9.2
44205-25 15 × 25 6321.7 23.9 10.86
44206-1 17.5 × 1 749.4 2.38 1.08
44207-2.5 20 × 2.5 1600.7 7.67 3.49
44207-5 20 × 5 2951.6 17.22 7.83
44207-20 20 × 20 5903.2 36.26 16.48
44209-2.5 25 × 2.5 1294.4 10.01 4.55
44209-5 25 × 5 2451.2 22.77 10.35
44209-10 25 × 10 4123 37.84 17.2
44209-12.5 25 × 12.5 4666.9 42.67 19.4
44209-20 25 × 20 5596.8 54.58 24.81