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UMS 60x18x8.5x15 / N38 - conical magnetic holder

conical magnetic holder

Catalog no 220404

GTIN/EAN: 5906301814238

5.00

Diameter Ø

60 mm [±1 mm]

cone dimension Ø

18x8.5 mm [±1 mm]

Height

15 mm [±1 mm]

Weight

250 g

Magnetization Direction

↑ axial

Load capacity

112.00 kg / 1098.34 N

Coating

[NiCuNi] Nickel

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62.78 ZŁ with VAT / pcs + price for transport

51.04 ZŁ net + 23% VAT / pcs

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Contact us by phone +48 888 99 98 98 or let us know via inquiry form the contact page.
Lifting power as well as form of magnets can be tested using our force calculator.

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Technical parameters of the product - UMS 60x18x8.5x15 / N38 - conical magnetic holder

Specification / characteristics - UMS 60x18x8.5x15 / N38 - conical magnetic holder

properties
properties values
Cat. no. 220404
GTIN/EAN 5906301814238
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 60 mm [±1 mm]
cone dimension Ø 18x8.5 mm [±1 mm]
Height 15 mm [±1 mm]
Weight 250 g
Magnetization Direction ↑ axial
Load capacity ~ ? 112.00 kg / 1098.34 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMS 60x18x8.5x15 / 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
Engineering data and GPSR
Elemental analysis
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%
Environmental data
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: 220404-2026
Magnet Unit Converter
Magnet pull force
Magnetic Induction
Input data in one of the inputs, and the remaining units change in real-time.

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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. The steel cup strengthens the magnet force and protects it from cracking upon impact.
Despite the steel housing, the magnet itself is prone to cracking under strong point pressure. Avoid forceful tightening when you feel resistance. 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. If you need a pair, ask about availability of complementary sets or check the description. Mounting a magnet to a plate eliminates the problem of matching poles and is easier.
This force is measured in ideal laboratory conditions when pulling at a 90-degree angle. To increase friction and prevent sliding, it is worth sticking a piece of rubber or anti-slip tape on the magnet. 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. The countersunk holder is a professional mounting solution with increased durability.

Pros and cons of neodymium magnets.

Pros

Besides their stability, neodymium magnets are valued for these benefits:
  • They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
  • Magnets effectively resist against demagnetization caused by foreign field sources,
  • By covering with a shiny layer of nickel, the element presents an aesthetic look,
  • Magnets exhibit exceptionally strong magnetic induction on the working surface,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures reaching 230°C and above...
  • Due to the option of free forming and adaptation to unique requirements, magnetic components can be modeled in a wide range of forms and dimensions, which increases their versatility,
  • Significant place in high-tech industry – they are commonly used in HDD drives, drive modules, diagnostic systems, and complex engineering applications.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Disadvantages

Disadvantages of neodymium magnets:
  • To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its 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 possibility of creating threads in the magnet and complicated shapes - preferred is cover - magnet mounting.
  • Possible danger resulting from small fragments of magnets are risky, if swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these devices can complicate diagnosis medical after entering the body.
  • With large orders the cost of neodymium magnets can be a barrier,

Holding force characteristics

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

Holding force of 112.00 kg is a theoretical maximum value performed under specific, ideal conditions:
  • using a base made of mild steel, acting as a magnetic yoke
  • whose transverse dimension is min. 10 mm
  • characterized by lack of roughness
  • with zero gap (without impurities)
  • under axial application of breakaway force (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Lifting capacity in real conditions – factors

Please note that the application force may be lower influenced by the following factors, in order of importance:
  • Clearance – the presence of foreign body (paint, dirt, air) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
  • Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of nominal force).
  • Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
  • Chemical composition of the base – low-carbon steel gives the best results. Alloy steels reduce magnetic properties and lifting capacity.
  • Base smoothness – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness creates an air distance.
  • Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity was determined with the use of a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, however under shearing force the load capacity is reduced by as much as 75%. Moreover, even a slight gap between the magnet’s surface and the plate lowers the load capacity.

Precautions when working with NdFeB magnets
Machining danger

Mechanical processing of neodymium magnets carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Do not overheat magnets

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

Avoid contact if allergic

Some people have a sensitization to Ni, which is the common plating for neodymium magnets. Extended handling might lead to dermatitis. It is best to use safety gloves.

Risk of cracking

Despite metallic appearance, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may shatter into hazardous fragments.

GPS Danger

An intense magnetic field negatively affects the functioning of magnetometers in phones and GPS navigation. Maintain magnets close to a device to avoid breaking the sensors.

Pacemakers

Health Alert: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.

This is not a toy

Only for adults. Small elements pose a choking risk, leading to severe trauma. Store out of reach of kids and pets.

Crushing risk

Big blocks can break fingers in a fraction of a second. Do not put your hand between two attracting surfaces.

Electronic devices

Equipment safety: Neodymium magnets can damage data carriers and delicate electronics (heart implants, medical aids, mechanical watches).

Immense force

Handle with care. Neodymium magnets attract from a distance and connect with massive power, often quicker than you can move away.

Caution! Need more info? Check our post: Are neodymium magnets dangerous?