The 10x10mm neodymium cylinder magnet fits a 1/2" copper or aluminum tube for studying the effects of eddy currents. Compare the drop times of this magnet with the 10x10mm, 10x25mm, 12.5x12.5mm or 12x25mm rod magnets.
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.
The Mark II Magnaprobe is an excellent tool for detecting magnetic fields & is must for any college or high school electricity & magnetism lab. See it in action below in our eddy current-drop tower braking simulation or read our blog Eddy Current Copper Tube Drop Tower Brake Test.
Even more impressive is the ultrasensitive Mark I Magnaprobe which responds to magnetic fields as weak as 0.3 gauss. A must if your cyclotron or particle collider is slightly off. In this instance, it was able to detect the eddy current in the simulation below at a distance of over 1m (3.3 feet)!
Specifications
Field Strength (Gauss) & Pull Force in Pounds & Kilograms at 5 Distances Above Magnet
SKU: 44203-10 Size: 10 × 10mm
Distance (mm):
0
0.1
1
10
100
Gauss
5903.2
5782.9
4714.1
499.7
1.4
Lb
8.87
8.51
5.66
0.06
0.00
Kg
4.03
3.87
2.57
0.03
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
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...
Reviews ()
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