UMC 36x6/4X8 / N38 - cylindrical magnetic holder

Product available Ships today (order by 14:00)

UMC 36x6/4X8 / N38 - cylindrical magnetic holder

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

cylindrical magnetic holder

Catalog no 320410

GTIN/EAN: 5906301814665

5.00

Diameter

36 mm [±1 mm]

internal diameter Ø

6/4 mm [±1 mm]

Height

8 mm [±1 mm]

Weight

45 g

Load capacity

29.00 kg / 284.39 N

Coating

[NiCuNi] Nickel

technical parameters »

21.49 ZŁ with VAT / pcs + price for transport

17.47 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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Call us +48 22 499 98 98 alternatively get in touch using contact form the contact section.
Strength and shape of neodymium magnets can be reviewed on our power calculator.

Orders placed before 14:00 will be shipped the same business day.

Detailed specification - UMC 36x6/4X8 / N38 - cylindrical magnetic holder

Specification / characteristics - UMC 36x6/4X8 / N38 - cylindrical magnetic holder

properties

properties	values
Cat. no.	320410
GTIN/EAN	5906301814665
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	36 mm [±1 mm]
internal diameter Ø	6/4 mm [±1 mm]
Height	8 mm [±1 mm]
Weight	45 g
Load capacity ~ ?	29.00 kg / 284.39 N
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMC 36x6/4X8 / N38 - cylindrical 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

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: 320410-2026

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These are magnets in the shape of a rod in a brass or steel sleeve, ideal for embedding in deep sockets. Used where the magnet must be hidden deep in the material or precisely positioned.

Mounting is done by screwing with a bolt from the back of the device or machine. Thanks to the long body, the magnet is stable in the hole and does not tilt.

All magnet energy is directed exclusively to the front (active surface), increasing point force. This is a key feature when mounting in steel sockets so the magnet doesn't "stick" to the hole walls during insertion.

The neodymium magnet is deeply embedded (glued) in a solid block of steel or brass, making it very resistant. The risk of magnet cracking with normal use is minimal as it is shielded.

We recommend making the mounting hole with slight clearance and using glue for certainty. If high precision is required, measure the specific batch with a caliper before machining sockets.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Strengths

Apart from their consistent magnetism, neodymium magnets have these key benefits:

They retain full power for around ten years – the loss is just ~1% (in theory),
They are noted for resistance to demagnetization induced by external magnetic fields,
A magnet with a smooth nickel surface looks better,
They feature high magnetic induction at the operating surface, making them more effective,
Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
Thanks to modularity in shaping and the ability to customize to unusual requirements,
Versatile presence in future technologies – they are utilized in mass storage devices, motor assemblies, medical devices, and complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which enables their usage in miniature devices

Weaknesses

Disadvantages of NdFeB magnets:

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a steel housing, which not only protects them against impacts but also increases their durability
Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
Limited ability of creating nuts in the magnet and complicated forms - preferred is casing - magnet mounting.
Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. It is also worth noting that small components of these products can be problematic in diagnostics medical when they are in the body.
Due to neodymium price, their price exceeds standard values,

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what affects it?

The lifting capacity listed is a measurement result performed under standard conditions:

using a sheet made of low-carbon steel, acting as a ideal flux conductor
with a thickness minimum 10 mm
characterized by lack of roughness
with direct contact (no paint)
for force acting at a right angle (in the magnet axis)
at ambient temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

In practice, the real power results from a number of factors, presented from most significant:

Clearance – existence of foreign body (rust, dirt, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of maximum force).
Base massiveness – insufficiently thick plate does not close the flux, causing part of the flux to be lost into the air.
Material type – ideal substrate is high-permeability steel. Stainless steels may have worse magnetic properties.
Base smoothness – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was assessed by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the load capacity is reduced by as much as 75%. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.

H&S for magnets

Adults only

Only for adults. Small elements can be swallowed, causing intestinal necrosis. Store away from children and animals.

Avoid contact if allergic

Studies show that the nickel plating (the usual finish) is a potent allergen. If your skin reacts to metals, prevent touching magnets with bare hands and opt for coated magnets.

Handling guide

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

Power loss in heat

Watch the temperature. Exposing the magnet to high heat will permanently weaken its properties and strength.

Material brittleness

Despite metallic appearance, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Serious injuries

Danger of trauma: The attraction force is so great that it can cause blood blisters, crushing, and even bone fractures. Protective gloves are recommended.

Pacemakers

For implant holders: Strong magnetic fields disrupt electronics. Maintain minimum 30 cm distance or request help to handle the magnets.

Magnetic interference

An intense magnetic field interferes with the functioning of compasses in phones and GPS navigation. Keep magnets close to a smartphone to avoid damaging the sensors.

Protect data

Intense magnetic fields can erase data on credit cards, HDDs, and other magnetic media. Stay away of at least 10 cm.

Dust is flammable

Combustion risk: Neodymium dust is highly flammable. Do not process magnets in home conditions as this may cause fire.

Danger! More info about risks in the article: Magnet Safety Guide.

UMC 36x6/4X8 / N38 - cylindrical magnetic holder

Detailed specification - UMC 36x6/4X8 / N38 - cylindrical magnetic holder

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Chemical composition

Sustainability

Magnet pull force

Magnetic Field

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Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

Weaknesses

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what affects it?

Magnet lifting force in use – key factors

H&S for magnets

Adults only

Avoid contact if allergic

Handling guide

Power loss in heat

Material brittleness

Serious injuries

Pacemakers

Magnetic interference

Protect data

Dust is flammable

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Advantages and disadvantages of Nd₂Fe₁₄B magnets.