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neodymium magnets

We offer red color magnetic Nd2Fe14B - our offer. Practically all "neodymium magnets" in our store are available for immediate purchase (check the list). Check out the magnet price list for more details check the magnet price list

Magnets for water searching F300 GOLD

Where to purchase powerful neodymium magnet? Holders with magnets in airtight, solid steel enclosure are ideally suited for use in challenging weather, including in the rain and snow more information

magnets with holders

Holders with magnets can be applied to improve production processes, underwater discoveries, or searching for space rocks made of metal read...

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NCM 30x13.5x5 / N38 - channel magnetic holder

channel magnetic holder

Catalog no 360488

GTIN: 5906301814870

0

Diameter Ø [±0,1 mm]

30 mm

Height [±0,1 mm]

13.5 mm

Weight

14 g

Magnetization Direction

↑ axial

Load capacity

16 kg / 156.91 N

Coating

[NiCuNi] nickel

9.40 with VAT / pcs + price for transport

7.64 ZŁ net + 23% VAT / pcs

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Force as well as shape of magnets can be tested on our magnetic calculator.

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NCM 30x13.5x5 / N38 - channel magnetic holder
Specification/characteristics NCM 30x13.5x5 / N38 - channel magnetic holder
properties
values
Cat. no.
360488
GTIN
5906301814870
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
30 mm [±0,1 mm]
Height
13.5 mm [±0,1 mm]
Weight
14 g [±0,1 mm]
Magnetization Direction
↑ axial
Load capacity ~ ?
16 kg / 156.91 N
Coating
[NiCuNi] nickel
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material N38

properties
values
units
remenance Br [Min. - Max.] ?
12.2-12.6
kGs
remenance Br [Min. - Max.] ?
1220-1260
T
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 at 20°C

properties
values
units
Vickers hardness
≥550
Hv
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

Shopping tips

Channel holders are some of the most efficient mounting magnets, built based on a steel U-profile (trough). They are widely used in industry for fixing guards, flaps, doors, and in robot grippers.
Mounting is done using countersunk head screws, which hide flat in the housing. Hole spacing allows secure fixing even in difficult conditions.
Channel holders are characterized by an exceptionally high force-to-size ratio. This force is available with direct contact with metal over the entire surface.
The steel trough (U-profile) perfectly protects glued magnets from impacts and crushing. Standard versions work up to 80°C but are resistant to vibrations and shocks.
The steel housing is usually galvanized, providing basic protection against corrosion. To increase resistance to external conditions, they can be varnished or painted.

Strengths as well as weaknesses of NdFeB magnets.

In addition to their magnetic capacity, neodymium magnets provide the following advantages:

  • They virtually do not lose strength, because even after ten years the performance loss is only ~1% (in laboratory conditions),
  • They are noted for resistance to demagnetization induced by external disturbances,
  • Thanks to the smooth finish, the surface of Ni-Cu-Ni, gold-plated, or silver-plated gives an elegant appearance,
  • Magnetic induction on the working layer of the magnet is strong,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to the possibility of flexible shaping and adaptation to specialized requirements, magnetic components can be manufactured in a variety of shapes and sizes, which increases their versatility,
  • Key role in advanced technology sectors – they are utilized in HDD drives, electric motors, precision medical tools, and modern systems.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Disadvantages of neodymium magnets:

  • They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
  • Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of producing nuts in the magnet and complex shapes - recommended is cover - mounting mechanism.
  • Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which becomes key in the context of child health protection. Furthermore, small components of these products are able to disrupt the diagnostic process medical in case of swallowing.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Highest magnetic holding forcewhat affects it?

The load parameter shown concerns the maximum value, recorded under optimal environment, specifically:

  • using a sheet made of high-permeability steel, functioning as a circuit closing element
  • with a thickness minimum 10 mm
  • characterized by smoothness
  • without any air gap between the magnet and steel
  • for force applied at a right angle (pull-off, not shear)
  • at temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

In real-world applications, the actual lifting capacity depends on a number of factors, ranked from crucial:

  • Clearance – existence of any layer (paint, dirt, air) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
  • Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
  • Steel grade – ideal substrate is high-permeability steel. Cast iron may have worse magnetic properties.
  • Smoothness – ideal contact is possible only on smooth steel. Rough texture reduce the real contact area, reducing force.
  • Temperature – heating the magnet results in weakening of induction. It is worth remembering the thermal limit for a given model.

* Lifting capacity was assessed with the use of a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the load capacity is reduced by as much as fivefold. Additionally, even a slight gap {between} the magnet’s surface and the plate reduces the load capacity.

H&S for magnets

Medical implants

Medical warning: Strong magnets can turn off heart devices and defibrillators. Stay away if you have medical devices.

Data carriers

Do not bring magnets close to a wallet, laptop, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.

Powerful field

Be careful. Neodymium magnets act from a distance and snap with massive power, often faster than you can react.

This is not a toy

NdFeB magnets are not toys. Eating a few magnets can lead to them attracting across intestines, which poses a severe health hazard and requires urgent medical intervention.

Magnetic interference

Note: rare earth magnets produce a field that confuses precision electronics. Maintain a safe distance from your phone, tablet, and GPS.

Fragile material

Despite the nickel coating, neodymium is delicate and not impact-resistant. Avoid impacts, as the magnet may shatter into hazardous fragments.

Pinching danger

Large magnets can smash fingers instantly. Do not put your hand betwixt two attracting surfaces.

Nickel coating and allergies

Medical facts indicate that the nickel plating (the usual finish) is a potent allergen. If you have an allergy, prevent direct skin contact or choose coated magnets.

Dust is flammable

Dust created during machining of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Heat warning

Avoid heat. Neodymium magnets are sensitive to heat. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Security!

More info about risks in the article: Safety of working with magnets.

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98