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NCM 15x13.5x5 / N38 - channel magnetic holder

channel magnetic holder

Catalog no 360486

GTIN/EAN: 5906301814856

5.00
Load capacity 7.00 kg / 68.65 N
Diameter Ø
15 mm [±1 mm]
Height
13.5 mm [±1 mm]
Weight
6.8 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel
product specifications »

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Technical of the product - NCM 15x13.5x5 / N38 - channel magnetic holder

Specification / characteristics - NCM 15x13.5x5 / N38 - channel magnetic holder

properties
properties values
Cat. no. 360486
GTIN/EAN 5906301814856
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 15 mm [±1 mm]
Height 13.5 mm [±1 mm]
Weight 6.8 g
Magnetization Direction ↑ axial
Load capacity ~ ? 7.00 kg / 68.65 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics NCM 15x13.5x5 / 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
Technical and environmental data

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%

Sustainability

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: 360486-2026
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Channel holders are some of the most efficient mounting magnets, built based on a steel U-profile (trough). They are characterized by high capacity and resistance to mechanical impacts.
Mounting is done using countersunk head screws, which hide flat in the housing. Thanks to the flat construction, they are great for surface mounting without milling.
Channel holders are characterized by an exceptionally high force-to-size ratio. Even a small channel holder can surprise with its power, surpassing pot magnets.
Magnets are shielded on three sides by steel, increasing their lifespan and crack resistance. They are ideal for heavy doors, machine flaps, molds, and fastening systems in industry.
The steel housing is usually galvanized, providing basic protection against corrosion. With constant contact with water, corrosion may appear, so we do not recommend them for work in rain without additional protection.

Advantages and disadvantages of rare earth magnets.

Benefits

Apart from their superior magnetic energy, neodymium magnets have these key benefits:
  • They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (according to literature),
  • Magnets effectively protect themselves against demagnetization caused by external fields,
  • The use of an refined finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • Neodymium magnets create maximum magnetic induction on a their surface, which increases force concentration,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Thanks to flexibility in constructing and the capacity to customize to client solutions,
  • Huge importance in modern industrial fields – they are utilized in magnetic memories, drive modules, medical equipment, also other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which makes them useful in compact constructions

Weaknesses

Characteristics of disadvantages of neodymium magnets: tips and applications.
  • Brittleness is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape as well as 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 rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • We suggest a housing - magnetic holder, due to difficulties in realizing threads inside the magnet and complicated forms.
  • Possible danger to health – tiny shards of magnets are risky, in case of ingestion, which is particularly important in the context of child safety. Additionally, small elements of these products are able to be problematic in diagnostics medical after entering the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Detachment force of the magnet in optimal conditions – what it depends on?

The lifting capacity listed is a measurement result conducted under the following configuration:
  • on a base made of mild steel, effectively closing the magnetic flux
  • whose thickness reaches at least 10 mm
  • with a surface free of scratches
  • without the slightest air gap between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • at room temperature

Magnet lifting force in use – key factors

Please note that the application force may be lower subject to the following factors, in order of importance:
  • Air gap (betwixt the magnet and the plate), as even a tiny distance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
  • Plate thickness – insufficiently thick steel does not close the flux, causing part of the flux to be lost into the air.
  • Chemical composition of the base – mild steel attracts best. Higher carbon content reduce magnetic properties and lifting capacity.
  • Base smoothness – the more even the plate, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
  • Temperature influence – high temperature reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under shearing force the lifting capacity is smaller. In addition, even a minimal clearance between the magnet and the plate reduces the holding force.

Precautions when working with neodymium magnets
Allergic reactions

Studies show that nickel (the usual finish) is a common allergen. For allergy sufferers, avoid touching magnets with bare hands or opt for encased magnets.

No play value

Neodymium magnets are not toys. Accidental ingestion of a few magnets may result in them attracting across intestines, which constitutes a direct threat to life and necessitates immediate surgery.

Fragile material

Protect your eyes. Magnets can explode upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.

Handling rules

Handle with care. Neodymium magnets attract from a long distance and snap with massive power, often quicker than you can move away.

Dust is flammable

Combustion risk: Rare earth powder is highly flammable. Do not process magnets in home conditions as this risks ignition.

Precision electronics

A strong magnetic field interferes with the operation of compasses in smartphones and GPS navigation. Maintain magnets near a smartphone to avoid damaging the sensors.

Heat sensitivity

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

Protect data

Avoid bringing magnets close to a purse, computer, or screen. The magnetic field can destroy these devices and erase data from cards.

Life threat

Warning for patients: Strong magnetic fields disrupt medical devices. Keep at least 30 cm distance or ask another person to work with the magnets.

Serious injuries

Large magnets can crush fingers in a fraction of a second. Under no circumstances place your hand between two strong magnets.

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