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UMS 36x10.5x6.5x8 / N38 - conical magnetic holder

conical magnetic holder

Catalog no 220330

GTIN/EAN: 5906301814207

5.00
Load capacity 29.00 kg / 284.39 N
Diameter Ø
36 mm [±1 mm]
cone dimension Ø
10.5x6.5 mm [±1 mm]
Height
8 mm [±1 mm]
Weight
45 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel
product specifications »

22.94 zł with VAT / pcs + price for transport

18.65 zł net + 23% VAT / pcs

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Parameters along with structure of a neodymium magnet can be reviewed with our force calculator.

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Product card - UMS 36x10.5x6.5x8 / N38 - conical magnetic holder

Specification / characteristics - UMS 36x10.5x6.5x8 / N38 - conical magnetic holder

properties
properties values
Cat. no. 220330
GTIN/EAN 5906301814207
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 36 mm [±1 mm]
cone dimension Ø 10.5x6.5 mm [±1 mm]
Height 8 mm [±1 mm]
Weight 45 g
Magnetization Direction ↑ axial
Load capacity ~ ? 29.00 kg / 284.39 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMS 36x10.5x6.5x8 / N38 - conical 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%

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: 220330-2026
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Countersunk magnets are indispensable in carpentry, furniture making, and modeling as hidden closures. The ability to flush the screw with the magnet surface allows for perfect closing without gaps. Model UMS 36x10.5x6.5x8 / N38 will successfully hold inspection doors, tools in the workshop, or shop display elements.
Remember that neodymium breaks easily if the screw is tightened too hard. It is best to use a screw with a countersunk head perfectly matched to the hole. Using too large a countersunk screw may cause the magnetic ring to crack.
Two identical magnets (e.g., both N) bought randomly will repel each other with mounting sides. In our offer, we try to mark or pair holders if explicitly stated in the description. Mounting a magnet to a plate eliminates the problem of matching poles and is easier.
The declared capacity (e.g., 29.00 kg) refers to the perpendicular force needed to detach the magnet from thick steel. In practice, when mounted on a wall (shear force), the magnet will hold significantly less (approx. 20-30% of nominal). When selecting a magnet for a cabinet, remember that the air gap (e.g., bumpers, seals) weakens the grip.
Thanks to the metal cup, the magnetic field is concentrated on the active side, which significantly increases force. It is a more durable and safer solution in everyday use than a bare ring. A bare ring has a dispersed field on both sides but is weaker in point holding.

Pros and cons of Nd2Fe14B magnets.

Advantages

Apart from their superior magnetism, neodymium magnets have these key benefits:
  • They retain attractive force for around ten years – the loss is just ~1% (according to analyses),
  • Magnets very well resist against loss of magnetization caused by foreign field sources,
  • A magnet with a metallic nickel surface is more attractive,
  • They feature high magnetic induction at the operating surface, which improves attraction properties,
  • Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
  • Considering the option of precise molding and adaptation to specialized needs, magnetic components can be manufactured in a variety of shapes and sizes, which makes them more universal,
  • Versatile presence in electronics industry – they serve a role in mass storage devices, electric drive systems, precision medical tools, and modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which makes them useful in compact constructions

Weaknesses

Disadvantages of NdFeB magnets:
  • At very strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets experience a drop in power. 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
  • They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • We recommend a housing - magnetic mount, due to difficulties in creating nuts inside the magnet and complex forms.
  • Potential hazard resulting from small fragments of magnets are risky, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these devices can complicate diagnosis medical when they are in the body.
  • With budget limitations the cost of neodymium magnets can be a barrier,

Lifting parameters

Highest magnetic holding force – what affects it?

Information about lifting capacity was defined for optimal configuration, assuming:
  • with the application of a sheet made of low-carbon steel, guaranteeing maximum field concentration
  • whose transverse dimension equals approx. 10 mm
  • characterized by even structure
  • without the slightest clearance between the magnet and steel
  • under axial force direction (90-degree angle)
  • at room temperature

Magnet lifting force in use – key factors

In practice, the actual lifting capacity results from several key aspects, listed from the most important:
  • Distance – the presence of foreign body (paint, dirt, gap) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
  • Load vector – highest force is reached only during perpendicular pulling. The resistance to sliding of the magnet along the surface is standardly many times smaller (approx. 1/5 of the lifting capacity).
  • Metal thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Plate material – mild steel gives the best results. Alloy steels lower magnetic properties and holding force.
  • Base smoothness – the smoother and more polished the surface, the better the adhesion and stronger the hold. Roughness creates an air distance.
  • Temperature influence – hot environment reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was assessed by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under shearing force the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate lowers the holding force.

Safety rules for work with neodymium magnets
Warning for allergy sufferers

Medical facts indicate that the nickel plating (standard magnet coating) is a potent allergen. For allergy sufferers, refrain from direct skin contact and select encased magnets.

Eye protection

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

Fire warning

Drilling and cutting of neodymium magnets poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Safe operation

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

Electronic hazard

Intense magnetic fields can destroy records on payment cards, hard drives, and storage devices. Keep a distance of at least 10 cm.

Bodily injuries

Large magnets can smash fingers instantly. Do not put your hand betwixt two attracting surfaces.

GPS Danger

Be aware: rare earth magnets generate a field that disrupts sensitive sensors. Maintain a separation from your phone, tablet, and GPS.

Danger to pacemakers

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

Do not overheat magnets

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and strength.

Choking Hazard

Product intended for adults. Tiny parts can be swallowed, leading to intestinal necrosis. Store away from children and animals.

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