5x5mm Rod Magnets

SKU: 44201-5

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A reed switch motor is a simple, electric DC motor you can build for a science fair project. Use it to demonstrate an experimental procedure of how a reed switch can work in a magnetic circuit. Why spend $30 or more on an off-the-shelf simple motor kit when you can DIY for a fraction of that, especially if you are a teacher on a budget?

There are many designs available but two permanent magnets such as our 5x5mm neodymium discs, some reed switches & jumper wires are readily available. Other key parts can be found in electrical supply or hardware stores. Alternatively, you can repurpose some of the 19 gauge copper wire & battery holder from our Electric circuits kit.

We have sold NdFeB magnets since 1996 and have offered N42 grade since 2003, the best value for strength vs cost then & now. Don't be fooled by claims of higher strength, N52, at lower cost:
"...(Indigo) N42 Neodymium magnets...the real deal…bought magnets on Amazon advertised as N52… another cheap Chinese fake". Read the complete review.
Details In Kits Specs Reviews Related Products
Details

This magnet is sold stand-alone & does not include motor kit instructions.

The Mark II Magnaprobe is an elegant way to confirm magnets have opposite magnetic poles where needed & reed switches work correctly.

In Kits
P/NDescriptionQTY
44201-PB5mm Nd magnet protoype bundle10
60200-2MRed divalent 23mm atom w/ 2 Nd magnet inserts glued in, pair4
60320-2MAtoMag Magnetized Alkene4
63001AtoMag Cyclohexane Magnetic Model24
63002AtoMag Glucose Magnetic Models Kit36
63003AtoMag Chirality Magnetic Models Kit8
63008AtoMag NaCl-H20 Molecular Model, Assembly Required80
63009AtoMag Ice Magnetic Model Kit50
63010AtoMag Diamond Magnetic Model Kit56
63101AtoMag Functional Group I Parts Add on4
63102AtoMag Functional Group 2 Parts Add on14
Specifications
Field Strength (Gauss) & Pull Force in Pounds & Kilograms at 5 Distances Above Magnet
SKU: 44201-5    Size: 5 × 5mm
Distance (mm): 0 0.1 1 10 100
Gauss 5903.2 5662.5 3641.1 107.3 0.2
Lb 2.04 1.88 0.78 0.00 0.00
Kg 0.93 0.85 0.35 0.00 0.00

Magnet Documentation
Drawing Compliance MSDS ROHS Graph
Magnet Technical Diagram Certificate of Compliance MSDS ROHS N42 Graph


Specifications for Fully Sintered/Pressed Neodymium Magnets, N42 Grade

RemanentFlux Density (Br) 13,000G; 1300mT
Coercivity (bHc) 12.0 Oe; 955 A/m
Intrinsic Coercivity (jHc) 17.0 Oe; 1353 A/m
Max.Energy Product (BHMax) 42 MGO; 334 kJ/m3
Curie Temperature (Tc) 310oC
Working Temperature (Tw) 80oC
Temp.Coefficient (αB)r -0.12%/Co


Tolerances - Sintered Rare Earth Magnets

  Dimensions Tolerances

Size:
Unfinished Surfaces:
Dimensions perpendicular to pressing (die formed)

 Inches mm Inches mm
0 to 0.125 0 to 3 +/- 0.006 +/- 0.15
0.126 to 0.625 3 to 16 +/- 0.012 +/- 0.30
0.626 to 0.875 16 to 22 +/- 0.018 +/- 0.45
0.876 and Up 22 and Up +/- 2.5% +/- 2.5%


American (Imperial)/Metric Conversion Table

Inch Decimal mm Rounded
1/32" 0.031 0.8 1
3/32" 0.094 2.4 2.5
5/32" 0.156 4.0 4
1/16" 0.063 1.6 1.5
3/16" 0.188 4.8 5
2/10" 0.200 5.1 5
1/8" 0.125 3.2 3.75
1/4" 0.250 6.4 7.5
5/16" 0.313 7.9 7.5
3/8" 0.375 9.5 10
13/32" 0.406 10.3 10
1/2" 0.500 12.7 12.5
9/16" 0.563 14.3 15
5/8" 0.625 15.9 15
11/16" 0.688 17.5 17.5
3/4" 0.750 19.1 20
13/16" 0.813 20.6 20
7/8" 0.875 22.2 22.5
15/16" 0.938 23.8 25

 

See what these customers had to say on Google(click on name for full review):

Tracy Myerson: ...purchased N42 Neodymium magnets, they are the real deal...had previously bought magnets on Amazon that were advertised as N52, they were just another cheap Chinese fake....

Ron Bennett: Fantastic support and product. Beats Amazon price with real customer service...product was of the highest quality and exactly as described.

Peter Maran: Their Neodymium magnets are superb in quality and price; ...tools, magnifiers, tweezers, and so on, all quality made...

 

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