Neodymium Cylindrical Rod Magnets

Neodymium rare earth rod magnets  with best quality guaranteed for research, engineering or industry; volume discounts at 10, 100, 1000+ on most sizes.

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Custom Magnet Assemblies

Indigo Instruments is partnered with a wolrd 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

 

  • nickel-copper-nickel coated
  • size tolerance for dimensions <10mm: +/- 0.05mm
  • size tolerance for dimensions >10mm: +/- 0.1mm
  • strength variance piece to piece: ±5%

 

This table lists the pull forces for all our rod 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
44200-2.5 2.5 × 2.5 5903.2 0.40 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 0.58 0.26
44200-12.5 2.5 × 12.5 6567.2 0.60 0.27
44201-5 5 × 5 5903.2 2.04 0.93
44201-7.5 5 × 7.5 6261.3 2.20 1.00
44201-10 5 × 10 6402.9 2.26 1.03
44201-12.5 5 × 12.5 6471.8 2.36 1.07
44201-15 5x15 6510.2 2.41 1.10
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 6527.0 5.92 2.69
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
44204-12.5 12.5 × 12.5 5903.2 14.14 6.43
44204-25 12.5 × 25 6402.9 16.06 7.30
44205-25 15 × 25 6321.7 23.90 10.86
44207-20 20x20 5903.2 36.26 16.48

 

  

American & Canadian Coin Sizes: Smallest to Largest
Dime: ~18x1.2mm; Penny: ~19x1.45mm; Nickel: ~21x1.75mm; Quarter: ~24x1.6mm.