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

Product available Ships tomorrow

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

product specifications »

21.49 ZŁ with VAT / pcs + price for transport

17.47 ZŁ net + 23% VAT / pcs

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Technical data - 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%

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: 320410-2026

Measurement Calculator

Pulling force

Newtons (N)

Pounds (lbs)

Magnetic Field

Tesla (T)

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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. Thanks to side shielding, they do not "catch" the walls of the mounting hole, which facilitates installation.

These holders usually have an internal thread (blind or through) on the back wall. Thanks to the long body, the magnet is stable in the hole and does not tilt.

The thick, steel or brass housing (sleeve) effectively screens the magnetic field on the sides of the holder. 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. Thanks to the solid build, the holder withstands repeated impacts and shocks during work cycles.

These holders are produced with standard tolerance for industrial magnets (usually ±0.1 mm or h6). If high precision is required, measure the specific batch with a caliper before machining sockets.

Pros as well as cons of rare earth magnets.

Pros

Besides their high retention, neodymium magnets are valued for these benefits:

They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (according to literature),
Neodymium magnets are characterized by highly resistant to magnetic field loss caused by external magnetic fields,
In other words, due to the aesthetic finish of gold, the element is aesthetically pleasing,
They are known for high magnetic induction at the operating surface, which increases their power,
Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures approaching 230°C and above...
Possibility of precise forming as well as modifying to complex applications,
Fundamental importance in electronics industry – they are commonly used in data components, drive modules, advanced medical instruments, also other advanced devices.
Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Disadvantages

Drawbacks and weaknesses of neodymium magnets and ways of using them

To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Limited possibility of making threads in the magnet and complicated forms - preferred is casing - magnet mounting.
Health risk to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these products can complicate diagnosis medical after entering the body.
Due to complex production process, their price exceeds standard values,

Lifting parameters

Highest magnetic holding force – what contributes to it?

Holding force of 29.00 kg is a result of laboratory testing performed under standard conditions:

on a plate made of mild steel, optimally conducting the magnetic field
with a cross-section of at least 10 mm
with a plane free of scratches
with total lack of distance (no paint)
for force applied at a right angle (pull-off, not shear)
in neutral thermal conditions

Practical lifting capacity: influencing factors

Please note that the application force may be lower subject to the following factors, starting with the most relevant:

Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
Angle of force application – maximum parameter is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is standardly many times smaller (approx. 1/5 of the lifting capacity).
Base massiveness – insufficiently thick plate does not close the flux, causing part of the power to be escaped to the other side.
Metal type – different alloys attracts identically. Alloy additives worsen the interaction with the magnet.
Surface quality – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
Temperature influence – hot environment reduces pulling force. Too high temperature can permanently damage the magnet.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

H&S for magnets

Immense force

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

Swallowing risk

Neodymium magnets are not intended for children. Eating several magnets may result in them pinching intestinal walls, which poses a severe health hazard and necessitates immediate surgery.

Nickel allergy

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, cease working with magnets and use protective gear.

Do not drill into magnets

Machining of neodymium magnets carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Bone fractures

Mind your fingers. Two powerful magnets will join instantly with a force of several hundred kilograms, crushing everything in their path. Be careful!

Risk of cracking

Despite the nickel coating, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Threat to navigation

GPS units and smartphones are extremely sensitive to magnetism. Direct contact with a strong magnet can decalibrate the sensors in your phone.

Warning for heart patients

Health Alert: Neodymium magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.

Permanent damage

Standard neodymium magnets (N-type) lose power when the temperature exceeds 80°C. This process is irreversible.

Electronic hazard

Powerful magnetic fields can destroy records on credit cards, HDDs, and storage devices. Keep a distance of min. 10 cm.

Caution! More info about hazards in the article: Magnet Safety Guide.

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

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Chemical composition

Ecology and recycling (GPSR)

Pulling force

Magnetic Field

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Pros as well as cons of rare earth magnets.

Pros

Disadvantages

Lifting parameters

Highest magnetic holding force – what contributes to it?

Practical lifting capacity: influencing factors

H&S for magnets

Immense force

Swallowing risk

Nickel allergy

Do not drill into magnets

Bone fractures

Risk of cracking

Threat to navigation

Warning for heart patients

Permanent damage

Electronic hazard

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C