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Product available shipping tomorrow!

MP 40x22x10 / N38 - neodymium magnet

ring magnet

catalog number 030344

no reviews

external diameter Ø

40 mm [±0,1 mm]

internal diameter Ø

22 mm [±0,1 mm]

height

10 mm [±0,1 mm]

magnetizing direction

↑ axial

capacity ~

12.54 kg / 122.98 N

magnetic induction ~

139.63 mT / 1,396 Gs

max. temperature

≤ 80 °C

40.59 PLN gross price (including VAT) / pcs +

33.00 PLN net price + 23% VAT / pcs

bulk discounts:

need more quantity?

price from 1 pcs

33.00 PLN

40.59 PLN

price from 19 pcs

31.02 PLN

38.15 PLN

price from 67 pcs

29.04 PLN

35.72 PLN

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Give us a call tel: +48 888 99 98 98 or write via contact form on the contact page. You can check the lifting capacity as well as the shape of neodymium magnets in our force calculator magnetic calculator

Orders placed by 2:00 PM will be shipped on the same business day.

Specification: ring magnet 40x22x10 / N38 ↑ axial

Characteristics: ring magnet 40x22x10 / N38 ↑ axial

Properties

Values

catalog number

030344

production / distribution

Dhit sp. z o.o.

country of origin

Poland / China / Germany

customs code

85059029

external diameter Ø

40 mm [±0,1 mm]

internal diameter Ø

22 mm [±0,1 mm]

height

10 mm [±0,1 mm]

magnetizing direction ?

↑ axial

capacity ~ ?

12.54 kg / 122.98 N

magnetic induction ~ ?

139.63 mT / 1,396 Gs

max. temperature ?

≤ 80 °C

coating type ?

[NiCuNi] nickel

weight

65.74 g

execution tolerance

± 0.1 mm

Magnetic properties of the material N38

material characteristics N38

Properties

Values

units

remenance Br [Min. - Max.] ?

12.2-12.6

kGs

remenance Br [Min. - Max.] ?

1220-1260

coercivity bHc ?

10.8-11.5

kOe

coercivity bHc ?

860-915

kA/m

actual internal force iHc

≥ 12

kOe

actual internal force iHc

≥ 955

kA/m

energy density [Min. - Max.]

36-38

BH max MGOe

energy density [Min. - Max.]

287-303

BH max KJ/m

max. temperature

≤ 80

°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B

Properties

Values

units

Vickers hardness

≥550

Density

≥7.4

g/cm³

Curie Temperature TC

312 - 380

°C

Curie Temperature TF

593 - 716

°F

Specific resistance

150

μΩ⋅Cm

Bending strength

250

Mpa

Compressive strength

1000~1100

Mpa

Thermal expansion parallel (∥) to orientation (M)

(3-4) x 106

°C^-1

Thermal expansion perpendicular (⊥) to orientation (M)

-(1-3) x 10-6

°C^-1

Young's modulus

1.7 x 104

kg/mm²

Neodymium magnets MP 40x22x10 / N38 in a ring form are frequently used in various industries due to their specific properties. Thanks to a powerful magnetic field of 12.54 kg, which can be described as lifting capacity, they are very helpful in applications that require strong magnetism in a relatively small area. Applications of MP 40x22x10 / N38 magnets include electrical mechanisms, generating systems, audio systems, and many other devices that use magnets for producing motion or storing energy. Despite their powerful strength, they have a comparatively low weight of 65.74 grams, which makes them more convenient to use compared to bulkier alternatives.

Shopping tips

Product available shipping tomorrow!

magnetic accessories lina fi 10 mm

1.48 PLN / pcs

Product available shipping tomorrow!

ring magnet 30x7/3x3 / N38 ↑ axial

11.69 PLN / pcs

Product available shipping tomorrow!

lamellar magnet 40x20x4x2[7/3.5] / N38 ↑ axial

17.96 PLN / pcs

Product available shipping tomorrow!

magnetic holder rubber internal thread 88x8.5 [M6] GW / N38

46.08 PLN / pcs

Advantages as well as disadvantages of neodymium magnets NdFeB.

Apart from immense power, neodymium magnets have the following advantages:

They do not lose their power (of the magnet). After approximately 10 years, their power decreases by only ~1% (theoretically),
They are exceptionally resistant to demagnetization caused by an external magnetic field,
By applying a shiny coating of nickel, gold, or silver, the element gains an aesthetic appearance,
They exhibit very high magnetic induction on the surface of the magnet,
Thanks to their high temperature resistance, they can operate (depending on the form) even at temperatures up to 230°C and above...
Due to the option of accurate forming and adaptation to individual needs – neodymium magnets can be produced in many variants of shapes and sizes, which enhances their versatility in applications.
Key role in advanced technologically fields – are utilized in HDD drives, electric drive mechanisms, medical apparatus and various technologically advanced devices.

Disadvantages of neodymium magnets:

They are fragile when subjected to a powerful impact. If the magnets are exposed to impacts, we recommend using magnets in a metal holder. The steel housing in the form of a holder protects the magnet from impacts and at the same time increases its overall strength,
High temperatures can reduce the strength of neodymium magnets. Typically, after heating above 80°C, most of them experience a permanent reduction in strength (although it is dependent on the form and size). To prevent this, we offer special magnets marked with the symbol [AH], which are highly resistant to high temperatures. They can operate even at temperatures up to 230°C, making them an ideal solution for applications requiring high-temperature operation,
Due to their susceptibility to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic, or other moisture-resistant materials when using them outdoors,
The use of a cover or a magnetic holder is recommended due to the limited possibilities of manufacturing threads or complex shapes in the magnet
Potential hazard arising from small pieces of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting young children. Furthermore, small elements of these magnets can be problematic in medical diagnosis after entering the body.

Handle with Care: Neodymium Magnets

Avoid bringing neodymium magnets close to a phone or GPS.

Magnetic fields can interfere with compasses and magnetometers used in aviation and maritime navigation, as well as internal compasses of smartphones and GPS devices. There are neodymium magnets in every smartphone, for example, in the microphone and speakers.

The magnet is coated with nickel - be careful if you have an allergy.

Studies show a small percentage of people have allergies to certain metals, including nickel. An allergic reaction often manifests as skin redness and rash. If you have a nickel allergy, try wearing gloves or avoid direct contact with nickel-plated neodymium magnets.

Dust and powder from neodymium magnets are highly flammable.

Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. Once crushed into fine powder or dust, this material becomes highly flammable.

Neodymium magnets are the strongest magnets ever created, and their strength can surprise you.

On our website, you can find information on how to use neodymium magnets. This will help you avoid injuries and prevent damage to the magnets.

Magnets are not toys, children should not play with them.

Remember that neodymium magnets are not toys. Be cautious and make sure no child plays with them. They can be a significant choking hazard. If multiple magnets are swallowed, they can attract to each other through the intestinal walls, causing significant injuries, and even death.

Do not place neodymium magnets near a computer HDD, TV, and wallet.

Strong magnetic fields emitted by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other devices. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.

Neodymium magnets are particularly delicate, which leads to damage.

Neodymium magnets are characterized by significant fragility. Neodymium magnetic are made of metal and coated with a shiny nickel, but they are not as durable as steel. In the event of a collision between two magnets, there may be a scattering of fragments in different directions. Protecting your eyes is crucial in such a situation.

Magnets will attract to each other, so remember not to allow them to pinch together without control or place your fingers in their path.

If you have a finger between or on the path of attracting magnets, there may be a severe cut or a fracture.

Neodymium magnets can demagnetize at high temperatures.

Although magnets are generally resilient, their ability to maintain their magnetic potency can be influenced by factors like the type of material used, the magnet's shape, and the intended purpose for which it is employed.

Neodymium magnets are not recommended for people with pacemakers.

In the case of neodymium magnets, there is a strong magnetic field. As a result, it interferes with the operation of a heart pacemaker. However, if the magnetic field does not affect the device, it can damage its components or deactivate the device when it is in a magnetic field.

Please read the article - What danger lies in neodymium magnets? You will learn how to handle them properly.

MP 40x22x10 / N38 - neodymium magnet

ring magnet

Specification: ring magnet 40x22x10 / N38 ↑ axial

Magnetic properties of the material N38

Physical properties of sintered neodymium magnets Nd2Fe14B

Shopping tips

magnetic accessories lina fi 10 mm

ring magnet 30x7/3x3 / N38 ↑ axial

lamellar magnet 40x20x4x2[7/3.5] / N38 ↑ axial

magnetic holder rubber internal thread 88x8.5 [M6] GW / N38

Advantages as well as disadvantages of neodymium magnets NdFeB.

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B