Round neodymium magnet

Brand :

NIROKU

Caution

The product images are representative only. Specifications may vary by part number, including shape and color.
Due to export restrictions on rare earths in China, orders will be suspended once current stock runs out. Please note that even for large quantity quotations, delivery times may remain undetermined.

Product Description

A rare-earth magnet with the highest magnetic energy among the existing magnets.
[Features]
· Circular type magnet
· Not much cracking or chipping and high mechanical strength magnet
· It is cheaper than a samarium magnet, which is the same rare earth magnet.
· Due to its low temperature characteristics, the usage conditions for standard products allow use below 80°C.
· If it is a heat resistant type with improved coercivity, it can be used in high temperature ranges up to about 220°C.
· All products are surface-treated with nickel plating, etc., to be rust-resistant.
[Applications]
· Can be widely used for motors, iron powder removal, sensors, medical equipment, etc.
· Ideal for prototyping in small lots, etc.

Product Specification

Magnetic Properties

Material Name	Residual magnetic flux density	Coercive Force	Coercive Force	Maximum energy product
	Br	bHc	iHc	(BH) max.
	T	kA/m	kA/m	kJ/m³
N-30	1.08 to 1.15	≥ 796	≥ 955	223 to 247
N-33	1.13 to 1.17	≥ 836	≥ 955	247 to 271
N-35	1.17 to 1.25	≥ 859	≥ 955	263 to 295
N-38	1.22 to 1.30	≥ 859	≥ 955	287 to 318
N-40	1.25 to 1.32	≥ 859	≥ 955	302–334
N-42	1.28 to 1.35	≥ 859	≥ 955	318 to 350
N-45	1.32 to 1.38	≥ 836	≥ 955	334–366
N-48	1.36 to 1.43	≥ 836	≥ 875	358 to 390
N-50	1.39 to 1.46	≥ 796	≥ 875	374 to 408
N-52	1.42 to 1.48	≥ 796	≥ 875	390 to 424
N-55	1.45 to 1.52	≥ 716	≥ 875	406 to 446
N-35M	1.17 to 1.25	≥ 868	≥ 1114	263 to 295
N-38M	1.22 to 1.30	≥ 899	≥ 1114	287 to 318
N-40M	1.25 to 1.32	≥ 907	≥ 1114	302–334
N-42M	1.28 to 1.35	≥ 907	≥ 1114	318 to 350
N-45M	1.32 to 1.38	≥ 907	≥ 1114	334–366
N-48M	1.36 to 1.43	≥ 907	≥ 1114	358 to 390
N-50M	1.39 to 1.46	≥ 907	≥ 1114	374 to 408
N-30H	1.08 to 1.17	≥ 796	≥ 1353	223 to 255
N-33H	1.13 to 1.22	≥ 820	≥ 1353	247 to 279
N-35H	1.17 to 1.25	≥ 860	≥ 1353	263 to 295
N-38H	1.22 to 1.30	≥ 876	≥ 1353	286 to 318
N-40H	1.25 to 1.32	≥ 907	≥ 1353	302–334
N-42H	1.28 to 1.35	≥ 907	≥ 1353	318 to 350
N-45H	1.30 to 1.39	≥ 907	≥ 1274	326 to 374
N-48H	1.36 to 1.43	≥ 907	≥ 1274	358 to 392
N-30SH	1.08 to 1.17	≥ 796	≥ 1592	223 to 255
N-33SH	1.13 to 1.22	≥ 820	≥ 1592	247 to 279
N-35SH	1.17 to 1.25	≥ 860	≥ 1592	263 to 295
N-38SH	1.22 to 1.30	≥ 876	≥ 1592	286 to 318
N-40SH	1.23–1.32	≥ 907	≥ 1592	287 to 334
N-42SH	1.28 to 1.35	≥ 907	≥ 1592	310 to 350
N-45SH	1.32 to 1.38	≥ 907	≥ 1592	334–366
N-48SH	1.36 to 1.43	≥ 907	≥ 1512	358 to 390
N-30UH	1.08 to 1.17	≥ 796	≥ 1990	223 to 255
N-33UH	1.13 to 1.22	≥ 820	≥ 1990	247 to 279
N-35UH	1.17 to 1.25	≥ 860	≥ 1990	263 to 295
N-38UH	1.22 to 1.30	≥ 876	≥ 1990	287 to 318
N-40UH	1.25 to 1.32	≥ 876	≥ 1990	302–334
N-42UH	1.27 to 1.35	≥ 907	≥ 1990	310 to 366
N-45UH	1.32 to 1.38	≥ 907	≥ 1910	334–366
N-30EH	1.08 to 1.17	≥ 796	≥ 2387	223 to 255
N-33EH	1.14 to 1.22	≥ 816	≥ 2387	247 to 279
N-35EH	1.17 to 1.25	≥ 860	≥ 2387	263 to 295
N-38EH	1.22 to 1.30	≥ 876	≥ 2228	286 to 318
N-30AH	1.08 to 1.15	≥ 780	≥ 2624	223 to 255
N-33AH	1.13 to 1.18	≥ 780	≥ 2624	247 to 271

Physical Properties

Series Name	Temperature coefficient (Br)	Density	Curie Temperature	Vickers Hardness	Operating temperature*
Series Name	%/°C	g/cm³	℃	HV	℃
N series	-0.12	7.3 to 7.5	310	500-600	80
N-M series	-0.11	7.3 to 7.5	310	500-600	100
N-H series	-0.11	7.3 to 7.5	310	500-600	120
N-SH series	-0.1	7.3 to 7.5	310	500-600	150
N-UH series	-0.1	7.3 to 7.5	310	500-600	180
N-EH series	-0.1	7.3 to 7.5	310	500-600	200
N-AH series	-0.1	7.3 to 7.5	310	500-600	220

*In the case where the dimensional ratio of thickness (t) / diameter (D) in a round shape is 0.7

Image of NE206

NE206 ⌀10 (diameter 10 mm) × 2 mm: N39SH

Magnetized in thickness direction, length 260 mT, width 1.00 kg
Weight 1.15 g

Image of NE017

NE017 ⌀10 (Diameter 10 mm) ×10 mm: N40

Y-direction magnetization Length 490 mT Width 3.40 kg
Weight 5.73 g

Image of NE219

NE219 ⌀1.5 (Diameter 1.5 mm) ×8 mm: N35

Y-direction magnetization Length 220 mT Width 0.08 kg
Weight 0.10 g

Product Feature Details

Neodymium magnets are shaped and sintered products whose main components are neodymium, iron and boron.
The exceptional magnetic energy is the highest among the existing magnets.

Magnetization Direction: Y-direction

Magnetization Direction: Radial Magnetization

Magnetization Direction: Four Poles on Both Sides

Cautions and Prohibitions

There is a risk of injury, such as fingers getting pinched, if the magnet adheres to each other, tools, or iron pieces.
If the magnets are accidentally attracted, fix one magnet and move the other to the side. This method makes it relatively easy to remove.
At this time, if tools are used, the magnet may be cracked or chipped.
Magnets are generally fragile, and neodymium magnets tend to corrode from the damaged surface.
Also, there is a risk of injury from these fragments.
Keep magnets out of reach of children. If you accidentally swallow a magnet, contact your doctor immediately.
People with metal allergies may experience itching or redness if they come into contact with magnets.
If you experience any of these symptoms, do not touch the magnet.
If the magnet comes into direct contact with water, its components may leach out. Never drink this water.
Bringing a magnet close to a credit card, cash card, etc., may render it unusable.
Bringing magnets close to precision equipment such as computers, smartphones, watches, etc., may cause malfunction.
Placing a magnet close to an electronic medical device such as a cardiac pacemaker may impair its normal operation.
Demagnetization may occur if the magnet is used outside the operating temperature range.
Applying a strong impact to the magnet or processing it may demagnetize it.
Excessive bending of rubber magnets with a thickness of 2 mm or more may cause cracks.