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

channel magnetic holder

Catalog no 360488

GTIN: 5906301814870

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

9.40 ZŁ with VAT / pcs + price for transport

7.64 ZŁ net + 23% VAT / pcs

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Contact us by phone +48 888 99 98 98 or send us a note through request form the contact form page.
Force as well as shape of neodymium magnets can be calculated with our our magnetic calculator.

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

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

properties

properties	values
Cat. no.	360488
GTIN	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
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

Measurement Calculator

Pulling Force

Kilograms (kg)

Newtons (N)

Pounds (lbs)

Magnetic Field

Gauss (Gs)

Simply fill in a single box, to let the tool calculate the rest instantly.

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Channel holders are some of the most efficient mounting magnets, built based on a steel U-profile (trough). They are very flat and durable, making them ideal for mounting in tight spaces (e.g., in window profiles).

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.

Model NCM 30x13.5x5 / N38 reaches a capacity of up to 16.00 kg, which is an impressive result for such a flat element. These are some of the strongest solutions for flat mounting available on the market.

The steel trough (U-profile) perfectly protects glued magnets from impacts and crushing. They are ideal for heavy doors, machine flaps, molds, and fastening systems in industry.

The product is intended mainly for indoor use (dry rooms). In dry rooms, holders are practically indestructible.

Pros and cons of rare earth magnets.

Strengths

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They retain attractive force for nearly ten years – the drop is just ~1% (in theory),
They show high resistance to demagnetization induced by external field influence,
In other words, due to the glossy finish of gold, the element looks attractive,
They are known for high magnetic induction at the operating surface, which increases their power,
Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
Due to the ability of precise forming and adaptation to specialized needs, NdFeB magnets can be produced in a wide range of geometric configurations, which expands the range of possible applications,
Huge importance in advanced technology sectors – they are utilized in computer drives, drive modules, medical devices, and multitasking production systems.
Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Cons

Disadvantages of NdFeB magnets:

Brittleness is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a steel housing, which not only protects them against impacts but also raises their durability
When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength 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
Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in realizing threads and complex forms in magnets, we recommend using cover - magnetic holder.
Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, small components of these devices are able to disrupt the diagnostic process medical in case of swallowing.
Due to neodymium price, their price exceeds standard values,

Pull force analysis

Magnetic strength at its maximum – what it depends on?

Breakaway force was determined for ideal contact conditions, assuming:

with the application of a sheet made of special test steel, ensuring maximum field concentration
whose transverse dimension equals approx. 10 mm
with a surface cleaned and smooth
under conditions of gap-free contact (surface-to-surface)
during pulling in a direction perpendicular to the mounting surface
at room temperature

Impact of factors on magnetic holding capacity in practice

It is worth knowing that the working load will differ depending on elements below, starting with the most relevant:

Space between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
Material composition – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
Surface finish – ideal contact is possible only on smooth steel. Any scratches and bumps create air cushions, reducing force.
Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was measured using a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, whereas under shearing force the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Safe handling of neodymium magnets

Physical harm

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

Shattering risk

Protect your eyes. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.

Warning for allergy sufferers

Some people suffer from a contact allergy to Ni, which is the common plating for NdFeB magnets. Extended handling might lead to an allergic reaction. We suggest use protective gloves.

Mechanical processing

Combustion risk: Rare earth powder is highly flammable. Do not process magnets without safety gear as this may cause fire.

Danger to pacemakers

People with a heart stimulator must keep an absolute distance from magnets. The magnetic field can disrupt the operation of the implant.

Precision electronics

A powerful magnetic field negatively affects the operation of compasses in smartphones and navigation systems. Do not bring magnets near a device to avoid damaging the sensors.

Keep away from children

NdFeB magnets are not suitable for play. Swallowing several magnets may result in them attracting across intestines, which poses a direct threat to life and requires urgent medical intervention.

Permanent damage

Keep cool. NdFeB magnets are susceptible to temperature. If you require operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Electronic devices

Do not bring magnets near a purse, computer, or screen. The magnetic field can destroy these devices and wipe information from cards.

Caution required

Exercise caution. Neodymium magnets act from a long distance and connect with massive power, often faster than you can move away.

Attention! Want to know more? Read our article: Why are neodymium magnets dangerous?

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

Want to talk magnets?

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Pulling Force

Magnetic Field

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UMGZ 42x20x9 [M8] GZ / N38 - magnetic holder external thread

SM 32x350 [2xM8] / N52 - magnetic separator

UMGZ 32x18x8 [M6] GZ / N38 - magnetic holder external thread

MP 10x4.3x4 / N38 - ring magnet

Pros and cons of rare earth magnets.

Strengths

Cons

Pull force analysis

Magnetic strength at its maximum – what it depends on?

Impact of factors on magnetic holding capacity in practice

Physical harm

Shattering risk

Warning for allergy sufferers

Mechanical processing

Danger to pacemakers

Precision electronics

Keep away from children

Permanent damage

Electronic devices

Caution required

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C