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NCM 40x13.5x5 / N38 - channel magnetic holder

channel magnetic holder

Catalog no 360489

GTIN/EAN: 5906301814887

5.00

Diameter Ø

40 mm [±1 mm]

Height

13.5 mm [±1 mm]

Weight

18.4 g

Magnetization Direction

↑ axial

Load capacity

17.00 kg / 166.71 N

Coating

[NiCuNi] Nickel

see technical specifications »

14.19 ZŁ with VAT / pcs + price for transport

11.54 ZŁ net + 23% VAT / pcs

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Technical - NCM 40x13.5x5 / N38 - channel magnetic holder

Specification / characteristics - NCM 40x13.5x5 / N38 - channel magnetic holder

properties
properties values
Cat. no. 360489
GTIN/EAN 5906301814887
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 40 mm [±1 mm]
Height 13.5 mm [±1 mm]
Weight 18.4 g
Magnetization Direction ↑ axial
Load capacity ~ ? 17.00 kg / 166.71 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics NCM 40x13.5x5 / N38 - channel magnetic holder
properties values units
remenance Br [min. - max.] ? 12.2-12.6 kGs
remenance Br [min. - max.] ? 1220-1260 mT
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

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 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²
Engineering data and GPSR
Chemical composition
iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%
Ecology and recycling (GPSR)
recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 360489-2026
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Magnetic Induction
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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.
These holders usually have one or two mounting holes with a chamfer (conical), which allows their stable screwing. They can be screwed to wood, walls, aluminum profiles, furniture boards, or plastics.
Model NCM 40x13.5x5 / N38 reaches a capacity of up to 17.00 kg, which is an impressive result for such a flat element. Even a small channel holder can surprise with its power, surpassing pot magnets.
The steel trough (U-profile) perfectly protects glued magnets from impacts and crushing. Thanks to solid construction, these holders do not crack as easily as bare neodymium plates.
The product is intended mainly for indoor use (dry rooms). In dry rooms, holders are practically indestructible.

Strengths and weaknesses of Nd2Fe14B magnets.

Strengths

Apart from their notable magnetic energy, neodymium magnets have these key benefits:
  • They virtually do not lose power, because even after 10 years the performance loss is only ~1% (according to literature),
  • Neodymium magnets remain remarkably resistant to magnetic field loss caused by external interference,
  • In other words, due to the aesthetic surface of silver, the element gains visual value,
  • Magnets exhibit exceptionally strong magnetic induction on the working surface,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
  • In view of the option of precise molding and customization to custom needs, NdFeB magnets can be created in a variety of geometric configurations, which amplifies use scope,
  • Fundamental importance in future technologies – they are utilized in data components, electromotive mechanisms, medical devices, and other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which allows their use in compact constructions

Limitations

Disadvantages of NdFeB magnets:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • We suggest a housing - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complex shapes.
  • Potential hazard related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, tiny parts of these magnets can complicate diagnosis medical when they are in the body.
  • Due to complex production process, their price exceeds standard values,

Pull force analysis

Maximum holding power of the magnet – what contributes to it?

Breakaway force is the result of a measurement for the most favorable conditions, assuming:
  • using a sheet made of high-permeability steel, functioning as a circuit closing element
  • with a thickness minimum 10 mm
  • with a surface free of scratches
  • with zero gap (without impurities)
  • under axial application of breakaway force (90-degree angle)
  • at conditions approx. 20°C

Key elements affecting lifting force

Please note that the working load may be lower subject to the following factors, in order of importance:
  • Gap (between the magnet and the metal), as even a microscopic distance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to paint, rust or dirt).
  • Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Plate thickness – too thin sheet does not close the flux, causing part of the power to be escaped into the air.
  • Plate material – mild steel gives the best results. Alloy steels lower magnetic permeability and lifting capacity.
  • Surface condition – smooth surfaces ensure maximum contact, which improves force. Rough surfaces weaken the grip.
  • Temperature – temperature increase results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under a perpendicular pulling force, however under shearing force the load capacity is reduced by as much as fivefold. In addition, even a slight gap between the magnet and the plate reduces the load capacity.

Safety rules for work with NdFeB magnets
Magnetic media

Equipment safety: Neodymium magnets can damage data carriers and sensitive devices (heart implants, medical aids, timepieces).

Fire warning

Powder produced during cutting of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Hand protection

Watch your fingers. Two large magnets will join instantly with a force of massive weight, destroying everything in their path. Be careful!

Safe operation

Handle with care. Rare earth magnets attract from a long distance and connect with huge force, often quicker than you can react.

Do not overheat magnets

Standard neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. The loss of strength is permanent.

Avoid contact if allergic

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If redness happens, cease working with magnets and use protective gear.

Beware of splinters

Despite metallic appearance, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Keep away from children

Adult use only. Small elements pose a choking risk, causing serious injuries. Keep away from children and animals.

Life threat

Medical warning: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.

GPS Danger

A powerful magnetic field interferes with the functioning of magnetometers in smartphones and navigation systems. Maintain magnets close to a smartphone to avoid breaking the sensors.

Security! Need more info? Read our article: Are neodymium magnets dangerous?