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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

technical details »

62.78 ZŁ with VAT / pcs + price for transport

51.04 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety
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Technical 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%
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: 220404-2026
Magnet Unit Converter
Force (pull)
Field Strength
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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.
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. The screw head should not protrude above the magnet surface, but it cannot burst it either.
To create a pair (magnet-magnet), you need one holder with an N pole on the chamfer and another with an S pole. 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. If the magnet hangs vertically, gravity causes it to slide with much less load. Paint or veneer on metal also reduces effective attraction force.
A magnet in a housing is stronger on one side (from the chamfer side) than a bare magnet of the same dimensions. Furthermore, steel protects the brittle neodymium from mechanical damage when closing cabinets (impacts). The countersunk holder is a professional mounting solution with increased durability.

Advantages and disadvantages of Nd2Fe14B magnets.

Benefits

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They retain full power for almost 10 years – the drop is just ~1% (according to analyses),
  • They do not lose their magnetic properties even under close interference source,
  • Thanks to the glossy finish, the surface of nickel, gold-plated, or silver-plated gives an clean appearance,
  • The surface of neodymium magnets generates a unique magnetic field – this is a distinguishing feature,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to modularity in constructing and the ability to modify to unusual requirements,
  • Wide application in modern technologies – they are commonly used in mass storage devices, drive modules, advanced medical instruments, as well as modern systems.
  • Thanks to their power density, small magnets offer high operating force, with minimal size,

Limitations

Drawbacks and weaknesses of neodymium magnets and proposals for their use:
  • 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 secures them against impacts but also raises their durability
  • Neodymium magnets lose their strength 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
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • We recommend casing - magnetic holder, due to difficulties in producing nuts inside the magnet and complicated shapes.
  • Health risk to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, small components of these products are able to disrupt the diagnostic process medical when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Lifting parameters

Maximum lifting force for a neodymium magnet – what affects it?

Breakaway force was defined for the most favorable conditions, taking into account:
  • with the contact of a sheet made of special test steel, ensuring full magnetic saturation
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • with an ground contact surface
  • without any air gap between the magnet and steel
  • under vertical force direction (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Practical lifting capacity: influencing factors

In real-world applications, the actual lifting capacity depends on several key aspects, ranked from most significant:
  • Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Plate material – mild steel attracts best. Alloy admixtures decrease magnetic properties and lifting capacity.
  • Plate texture – smooth surfaces guarantee perfect abutment, which improves force. Rough surfaces reduce efficiency.
  • Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity was measured with the use of a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Additionally, even a slight gap between the magnet and the plate lowers the load capacity.

Safe handling of NdFeB magnets
Danger to the youngest

Only for adults. Small elements pose a choking risk, causing intestinal necrosis. Store out of reach of children and animals.

Fire risk

Combustion risk: Rare earth powder is explosive. Do not process magnets without safety gear as this risks ignition.

Finger safety

Big blocks can break fingers instantly. Under no circumstances place your hand between two strong magnets.

Magnet fragility

Despite the nickel coating, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into hazardous fragments.

Powerful field

Before starting, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.

Electronic hazard

Powerful magnetic fields can corrupt files on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Keep away from electronics

A strong magnetic field negatively affects the functioning of compasses in phones and GPS navigation. Maintain magnets near a device to prevent breaking the sensors.

Life threat

People with a heart stimulator should keep an large gap from magnets. The magnetic field can disrupt the functioning of the life-saving device.

Heat warning

Regular neodymium magnets (N-type) lose power when the temperature exceeds 80°C. The loss of strength is permanent.

Sensitization to coating

Nickel alert: The nickel-copper-nickel coating contains nickel. If redness occurs, immediately stop handling magnets and use protective gear.

Security! Looking for details? Read our article: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98