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

channel magnetic holder

Catalog no 360488

GTIN/EAN: 5906301814870

Load capacity 16.00 kg / 156.91 N
Diameter Ø
30 mm [±1 mm]
Height
13.5 mm [±1 mm]
Weight
14 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

view technical specifications »

7.64 zł net / pcs

9.40 zł with VAT (23% VAT) / pcs

price for transport

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price from 100 pcs
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Frequently asked questions

How much will a magnetic holder hold in practice?
The catalogue value assumes full contact with smooth steel at least 10 mm thick and a perpendicular pull. Thinner sheet, paint, rust and surface irregularities reduce it considerably: on 1 mm sheet about half remains. Lifting and vertical mounting call for an additional safety margin.
Will a holder work on stainless steel?
Not on austenitic grades 304 and 316 — they are effectively non-magnetic. It will not work on aluminium, copper or brass either. Those materials need a mechanical gripper.
Which coating for which conditions?
Nickel-copper-nickel (NiCuNi) is the standard and covers most applications. Epoxy is used for damp environments and outdoor work, zinc is sufficient for dry interiors. Holders in a steel housing or in rubber also protect the magnet against impact.

Guides from the knowledge base

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Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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

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

properties
properties values
Cat. no. 360488
GTIN/EAN 5906301814870
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 30 mm [±1 mm]
Height 13.5 mm [±1 mm]
Weight 14 g
Magnetization Direction ↑ axial
Load capacity ~ ? 16.00 kg / 156.91 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics NCM 30x13.5x5 / N38 - channel magnetic holder
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working 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 310 °C
Curie Temperature TF 590 °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 specification and ecology

Material specification

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: 360488-2026
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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.
Two mounting points (in larger models) prevent the holder from rotating and ensure a solid connection. Thanks to the flat construction, they are great for surface mounting without milling.
Thanks to the short-circuiting of the magnetic field by steel side walls, holding force is concentrated and very large. This force is available with direct contact with metal over the entire surface.
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.
Magnets inside are nickel-plated, and the trough has an anti-corrosion layer. To increase resistance to external conditions, they can be varnished or painted.

Advantages as well as disadvantages of neodymium magnets.

Strengths

Besides their durability, neodymium magnets are valued for these benefits:
  • They do not lose magnetism, even over around ten years – the reduction in lifting capacity is only ~1% (according to tests),
  • They do not lose their magnetic properties even under close interference source,
  • In other words, due to the shiny finish of nickel, the element is aesthetically pleasing,
  • Magnets have extremely high magnetic induction on the surface,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures reaching 230°C and above...
  • Possibility of detailed machining and adjusting to concrete needs,
  • Huge importance in innovative solutions – they are commonly used in computer drives, electric drive systems, medical devices, also other advanced devices.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
  • Due to limitations in realizing nuts and complex forms in magnets, we propose using cover - magnetic holder.
  • Possible danger related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, tiny parts of these magnets can be problematic in diagnostics medical after entering the body.
  • Due to complex production process, their price exceeds standard values,

Pull force analysis

Maximum lifting force for a neodymium magnet – what contributes to it?

Information about lifting capacity was determined for the most favorable conditions, including:
  • with the application of a sheet made of special test steel, guaranteeing full magnetic saturation
  • with a cross-section of at least 10 mm
  • characterized by even structure
  • with total lack of distance (no coatings)
  • under vertical force vector (90-degree angle)
  • in temp. approx. 20°C

Magnet lifting force in use – key factors

It is worth knowing that the working load will differ depending on the following factors, in order of importance:
  • Clearance – the presence of foreign body (paint, dirt, gap) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
  • Angle of force application – highest force is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly several times lower (approx. 1/5 of the lifting capacity).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
  • Material type – the best choice is pure iron steel. Hardened steels may generate lower lifting capacity.
  • Surface quality – the more even the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was assessed with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under attempts to slide the magnet the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate reduces the holding force.

Warnings
Impact on smartphones

Be aware: neodymium magnets produce a field that confuses precision electronics. Keep a separation from your mobile, device, and GPS.

Data carriers

Device Safety: Neodymium magnets can ruin data carriers and delicate electronics (heart implants, hearing aids, mechanical watches).

Skin irritation risks

Certain individuals experience a hypersensitivity to nickel, which is the common plating for NdFeB magnets. Extended handling can result in an allergic reaction. We recommend wear protective gloves.

Finger safety

Risk of injury: The attraction force is so great that it can cause hematomas, crushing, and even bone fractures. Use thick gloves.

Choking Hazard

Always store magnets out of reach of children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are fatal.

Safe operation

Handle with care. Rare earth magnets act from a long distance and connect with massive power, often faster than you can react.

Maximum temperature

Monitor thermal conditions. Exposing the magnet to high heat will ruin its magnetic structure and strength.

Fire warning

Drilling and cutting of NdFeB material carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Warning for heart patients

For implant holders: Strong magnetic fields disrupt electronics. Keep minimum 30 cm distance or ask another person to handle the magnets.

Shattering risk

NdFeB magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets will cause them breaking into shards.

Attention! Learn more about risks in the article: Magnet Safety Guide.