Neodymium Disc & Rod Magnets

High tolerance neodymium rare earth disc & rod magnets, N42 grade Guaranteed tolerances for repeatability with exceptional pricing.

Where indicated, all our neodymium magnets are fully sintered & individually pressed to optimize uniformity of magnetic orientation & are manufactured according to National Magnetic Standards. This ensures that strength variation of +/- 5% between magnets is met both within batches & from batch to batch. You can be certain that our magnets will make your sensors, switches & latches work reliably & according to design.

Coatings

Standard is Cu-Ni-Cu & meets 10 hour salt spray test.
Optional: Epoxy, Parylene, Gold, & more.

Certifications

Certificates of Compliance available on request.
All magnets made in ISO9002 certified facililty
ROHS & MSDS certificates availalable.

Description More Information Technical Instructions/Safety

More Information

Applications

SKU	Size	Shape	Application
44201-2.5	5x2.5mm	Disc	3D Printed Business Card Holder
44201-2.5	5x2.5mm	Disc	Magnetic Scanning Targets
44203-1	10x1mm	Disc	Wall Art-Insurance Company
44205-2.5	15x2.5mm	Disc	Wall Art-Dental Office

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.

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

Technical

Remanent Flux Density (B_r)	Coercivity (bHc)	Intrinsic Coercivity (jHc)	Max. Energy Product (BH_Max)	Curie Temp. (T_c)	Working Temp. (T_w)	Temp. Coeff. (αB)_r
Specifications for Fully Sintered/Pressed Neodymium Magnets, N42 Grade
13,000G; 1300mT	12.0 Oe; 955 A/m	17.0 Oe; 1353 A/m	42 MGO; 334 kJ/m³	310^oC	80^oC	-0.12%/C^o

Specifications for Fully Sintered/Pressed
Neodymium Magnets, N42 Grade

RemanentFlux Density (B_r)	13,000G; 1300mT
Coercivity (bHc)	12.0 Oe; 955 A/m
Intrinsic Coercivity (jHc)	17.0 Oe; 1353 A/m
Max.Energy Product (BH_Max)	42 MGO; 334 kJ/m³
Curie Temperature (T_c)	310^oC
Working Temperature (T_w)	80^oC
Temp.Coefficient (αB)_r	-0.12%/C^o

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.

SKU	Size (mm)	Gauss	Pounds	Kilograms
Field Strength (Gauss) & Pull Forces in Pounds & Kilograms at Surface/Centre of Magnet
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
44209-20	25 × 20	5596.8	54.58	24.81

Instructions/Safety

Can damage computer gear & credit cards.
Handle with care. Magnets can snap together and break skin or a finger or shatter on impact.

Neodymium Disc & Rod Magnets

Coatings

Certifications

2.5x1mm Neodymium Disc Magnet

2.5x2.5mm Rod Magnets

2.5x5mm Rare Earth Rod Magnet

2.5x7.5mm Rod Magnets

2.5x10mm NdFeb Cylinder Magnet

2.5x12.5mm Rod Magnets

3x1mm Neodymium Disc Magnet

4x1.5mm Disc Magnets

5x1mm Neodymium Disc Magnet

5x2.5mm Neodymium Disc Magnet

5x10mm Neodymium Rod Magnet

5x12.5mm Cylinder Magnet

5x5mm Rod Magnets

5x7.5mm Neodymium Rod Magnet

7.5x1mm Thin Nd Disc Magnet

7.5x2.5mm Disc Magnets

7.5x5mm Disc Magnets

7.5x7.5mm Rod Magnets

7.5x10mm Rod Magnets

7.5x15mm NdFeB Cylinder Magnet

7.5x25mm Rare Earth Rod Magnet

10x1mm Neodymium Disc Magnet

10x2.5mm NdFeb Disc Magnet

10x5mm Neodymium Disc Magnet

10x7.5mm Neodymium Disc Magnet

10x10mm Neodymium Rod Magnet

10x12.5mm Neodymium Rod Magnet

10x15mm Nd Cylinder Magnet

10x25mm Nd Cylinder Magnet

12.5x1mm Thin Nd Disc Magnet

12.5x2.5mm Disc Magnets

12.5x5mm Disc Magnets

12.5x7.5mm Disc Magnets

12.5x10mm NdFeb Disc Magnet

12.5x12.5mm Rod Magnets

12.5x25mm Rod Magnets

15x1mm Thin Nd Disc Magnet

15x2.5mm Neodymium Disc Magnet

15x5mm Neodymium Disk Magnet

15x10mm Neodymium Disk Magnet

15x25mm NdFeB Cylinder Magnet

20x2.5mm Nd Disk Magnet

20x5mm Neodymium Disk Magnet

20x20mm Neodymium Rod Magnet

25x2.5mm Strong Nd Disk Magnet

25x5mm Disc Magnets

25x10mm Neodymium Disc Magnet

25x20mm Rare Earth Disk Magnet

1/8 x 1/16" Disc Magnet

More Information

Applications

Custom Magnet Assemblies

Technical

Instructions/Safety