The 25x10mm (2.5cm x 1cm) neodymium disc magnet is one of our most powerful and super strong magnet & can work with axial flux generators. Want to demonstrate eddy current braking? Drop this magnet down a 1" diameter copper or aluminum pipe & be amazed.
Safe shopping for best bang for the buck? Here's what some of our customers have to say about us.
Ron Bennett: Fantastic support and product. Beats Amazon price with real customer service. After online order was placed, they called and and asked if I had any questions and gave clear instructions on pickup process. Order was ready and in stock and the product was of the highest quality and exactly...
Tracy Myerson: Super fast shipping, excellent prices, and great quality product! I purchased N42 Neodymium magnets, they are the real deal. I had previously bought magnets on Amazon that were advertised as N52, they were just another cheap Chinese fake. These folks sell authentic, high quality....
Ian Kelly: I've dealt with Indigo Instruments for years now. They have always been personable and very knowledgeable. Most recently I sent them a hand-drawn sketch of my interpretation of something I saw on YouTube and wanted recommendations....I couldn't be happier...
The 25x10mm (2.5cm x 1cm) neodymium disc is one of our most powerful & can be used in wind generator turbines or for couplings in motors that use axial flux alternators.
The Indigo 25x10mm neodymium disc magnet is roughly equivalent to the KJ Magnetics, DX06, 1" x 3/8".
The Mark I Magnaprobe can respond to as little as 0.3 gauss & will detect weaknesses in magnetic shielding. The Mark II Magnaprobe is a fast & convenient way to confirm magnet are positioned with their poles pointing correctly.
Specifications
Field Strength (Gauss) & Pull Force in Pounds & Kilograms at 5 Distances Above Magnet
SKU: 44209-10 Size: 25 × 10mm
Distance (mm):
0
0.1
1
10
100
Gauss
4123.0
4095.2
3833.8
1473.8
8.8
Lb
37.84
37.33
32.72
4.84
0.00
Kg
17.20
16.97
14.87
2.20
0.00
Magnet Documentation
Drawing
Compliance
MSDS
ROHS
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
Here's what 3 happy customers said about us on our Google Page:
...I purchased N42 Neodymium magnets, they are the real deal. I had previously bought magnets on Amazon that were advertised as N52, they were just another cheap Chinese fake. These folks sell authentic, high quality stuff and get it to you fast....Read more of what Tracy Myerson had to say.
I've dealt with Indigo Instruments for years now....Most recently I sent them a hand-drawn sketch of my interpretation of something I saw on YouTube and wanted recommendations on what magnets to use. Chris called me up, discussed the project and made some recommendations. His recommendation was bang on....Read more of what Ian Kelly had to say.
Been doing business with Indigo for many years. Their Neodymium magnets are superb in quality and price....Read more of what Peter Maran had to say.
Reviews (4)
2021-01-26
Really can't say enough about Indigo Instruments! Shipping is fast, customer service is consistently great and the product is awesome. Thanks folks!
— Origin Goods
2020-12-16
Unbeatable price and selection. Great customer service and fast shipping.
— Marc
— Indigo: Thank you for kind words.
2018-09-19
These magnets were stronger by far than I had imagined. I bought 4 and 3 inadvertently got stuck together: no one has been able to separate them--kid you not. Big, strong guys cannot get them apart. If you need to lift an elephant, get one of these; if you need to lift a tank you'd better get three just to be sure :). Delivered quite quickly and well packaged so as not to interfere with air traffic navigational equipment...
— freebie
2018-01-10
Product exactly as described. Shipping was great and is second time I ordered through Indigo and won't be my last. Highly recommend!
— Chris
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